1576 lines
37 KiB
Plaintext
1576 lines
37 KiB
Plaintext
# Planets and major natural satellites of the Solar system.
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#
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# The orbital and physical data for the planets necessarily come from a
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# variety of sources.
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#
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#
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# === Orbits ===
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#
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# CustomOrbits are used for most of the large bodies in the solar system.
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# These are orbital calculations built into Celestia. In most cases,
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# EllipticalOrbits are provided as well in order to give the reader of this
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# file some rough idea of the shape and size of a body's orbit. If a body has
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# a CustomOrbit defined, its EllipticalOrbit is *not* used by Celestia; the
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# CustomOrbit will override the EllipticalOrbit.
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#
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# For the planets, the orbits are calculated using the VSOP87 theory
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# (P. Bretagnon and G. Francou, "Planetary theories in rectangular and
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# spherical variables. VSOP87 solutions", Astronomy & Astrophysics 202
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# (1988) 309-315.
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#
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# The orbits of the following Saturnian satellites are from Gerard Dourneau
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# (1987), "Observations et etude du mouvement des huit premiers satellites
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# de Saturne":
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# Mimas, Enceladus, Tethys, Dione, Rhea, Titan, Hyperion, Iapetus
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#
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# The orbits of the five largest Uranian satellites are from Laskar and
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# Jacobson (1978), "An Analytical Ephemeris of the Uranian Satellites"
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# (Miranda, Ariel, Umbriel, Titania, and Oberon)
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#
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# **** IMPORTANT ****
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# For applications where more accuracy is required, the orbits of any solar
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# system body may be replaced by a SPICE kernel or a file of postion/velocity
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# samples. Detailed documentation on how to do this may be found on the
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# Celestia WikiBook:
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# http://en.wikibooks.org/wiki/Celestia/Trajectories#CustomOrbit
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# It is also possible to use JPL's DE405 or DE406 ephemeris For the positions
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# of the planets, Moon, and Pluto. Details are here:
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# http://en.wikibooks.org/wiki/Celestia/JPL_Ephemerides
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# *******************
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#
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#
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# === Rotational Elements ===
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#
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# For most bodies, IAU rotational elements are used. These are implemented
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# internally by Celestia and selected by using a CustomRotation. The IAU
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# rotational elements are given here:
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# http://astrogeology.usgs.gov/Projects/WGCCRE/
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#
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# UniformRotations are also listed for purely informational reasons; they are
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# overridden by CustomRotations (when present.)
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#
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#
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# When alternate data sources are used for orbits or rotational elements, the
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# source is noted by a comment in the body definition
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"Mercury" "Sol"
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{
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Class "planet"
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Texture "mercury.*"
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# NormalMap "mercury-normal.*"
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Color [ 1.0 0.794 0.580 ]
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Radius 2439.7
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CustomOrbit "vsop87-mercury"
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# Overridden by CustomOrbit
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# EllipticalOrbit
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# {
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# Epoch 2457754.5 # 2017 Jan 01
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# Period 0.240846335370278
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# SemiMajorAxis 0.3870982883171065
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# Eccentricity 0.2056271908367409
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# Inclination 7.003994155746581
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# AscendingNode 48.30931074679484
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# ArgOfPericenter 29.1701873778266
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# MeanAnomaly 26.14989275135402
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# }
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BodyFrame { EquatorJ2000 {} }
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CustomRotation "iau-mercury"
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# Overridden by CustomRotation
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# UniformRotation
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# {
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# Period 1407.509405
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# Inclination 28.55
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# AscendingNode 11.01
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# MeridianAngle 329.548
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# }
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GeomAlbedo 0.141380
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BondAlbedo 0.088
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InfoURL "https://en.wikipedia.org/wiki/Mercury_(planet)"
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}
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"Venus" "Sol"
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{
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Class "planet"
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Texture "venus.*"
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# NormalMap "venus-normal.*"
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Radius 6051.8
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Atmosphere
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{
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Height 200
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MieScaleHeight 27
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Mie 0.02
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MieAsymmetry -0.2
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Rayleigh [ 0.0031 0.0058 0.0120 ]
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CloudMap "venus-clouds.*"
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CloudHeight 48.5
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CloudSpeed 90
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}
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CustomOrbit "vsop87-venus"
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# Overridden by CustomOrbit
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# EllipticalOrbit
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# {
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# Epoch 2457754.5 # 2017 Jan 01
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# Period 0.615190941031932
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# SemiMajorAxis 0.7233272732921288
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# Eccentricity 0.006740611200116246
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# Inclination 3.394407540605979
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# AscendingNode 76.63344927192618
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# ArgOfPericenter 55.01851197233226
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# MeanAnomaly 278.7601029077279
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# }
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BodyFrame { EquatorJ2000 {} }
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CustomRotation "iau-venus"
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# Overridden by CustomRotation
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# UniformRotation
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# {
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# Period 5832.443616
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# Inclination 157.16
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# AscendingNode 182.76
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# MeridianAngle 19.80
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# }
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GeomAlbedo 0.672604
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BondAlbedo 0.760
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TempDiscrepancy 507.5
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InfoURL "https://en.wikipedia.org/wiki/Venus"
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}
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"Earth" "Sol"
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{
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Class "planet"
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Texture "earth.*"
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NightTexture "earth-night.*"
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NormalMap "earth-normal.*"
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Color [ 0.856 0.910 1.0 ]
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SpecularColor [ 0.50 0.44 0.40 ]
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SpecularPower 120
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Radius 6378.140
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Oblateness 0.0033528
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Atmosphere
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{
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Height 100
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Mie 0.0015
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MieAsymmetry -0.7
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MieScaleHeight 10
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Rayleigh [ 0.0029 0.0053 0.0110 ]
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Absorption [ 0.00036 0.00029 0.00002 ]
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CloudHeight 7
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CloudSpeed 0
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CloudMap "earth-clouds.*"
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CloudShadowDepth 1.0
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}
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CustomOrbit "vsop87-earth"
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# Overridden by CustomOrbit
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# EllipticalOrbit
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# {
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# Epoch 2457754.5 # 2017 Jan 01
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# Period 1.00115230968135
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# SemiMajorAxis 1.000756460381853
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# Eccentricity 0.01742757053311079
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# Inclination 0.003361356887019717
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# AscendingNode 140.0148334495845
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# ArgOfPericenter 323.4532596516743
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# MeanAnomaly 357.1577020155666
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# }
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# Orientation of Earth's axis with respect to the ecliptic plane and
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# equinox of J2000 is computed with the long period extension of
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# extension of the the P03 precession model presented in
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# "Long-periodic Precession Parameters", J. Vondrak (2006)
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BodyFrame { EclipticJ2000 {} }
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CustomRotation "earth-p03lp"
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# Overriden by CustomRotation
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# UniformRotation
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# {
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# Period 23.93447117
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# Inclination -23.4392911
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# MeridianAngle 280.147
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# }
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GeomAlbedo 0.449576
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BondAlbedo 0.306
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TempDiscrepancy 33.5
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InfoURL "https://en.wikipedia.org/wiki/Earth"
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}
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"Moon:Earth I" "Sol/Earth"
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{
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Class "moon"
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Texture "moon.*"
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BumpMap "moonbump.*"
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BumpHeight 3.5
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# NormalMap "moon-normal.*"
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Radius 1738.14
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Oblateness 0.00125
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CustomOrbit "moon"
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# Overridden by CustomOrbit
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# OrbitFrame
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# {
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# EclipticJ2000 { Center "Sol/Earth" }
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# }
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# EllipticalOrbit
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# {
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# Epoch 2457754.5 # 2017 Jan 01
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# Period 27.321582
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# SemiMajorAxis 384399
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# Eccentricity 0.0554
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# Inclination 5.107
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# AscendingNode 154.316
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# ArgOfPericenter 271.378
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# MeanAnomaly 250.217
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# }
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OrbitFrame
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{
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EquatorJ2000 { Center "Sol/Earth" }
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}
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BodyFrame { EquatorJ2000 {} }
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CustomRotation "iau-moon"
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# Overriden by CustomRotation
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# UniformRotation
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# {
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# Inclination 23.4608
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# AscendingNode 359.9949
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# MeridianAngle 38.3213
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# }
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GeomAlbedo 0.136
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BondAlbedo 0.11
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InfoURL "https://en.wikipedia.org/wiki/Moon"
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}
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"Mars" "Sol"
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{
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Class "planet"
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Texture "mars.*"
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BumpMap "marsbump.*"
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BumpHeight 2.5
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# NormalMap "mars-normal.*"
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Color [ 1.0 0.75 0.7 ]
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Radius 3396.2
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Oblateness 0.00589
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Atmosphere
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{
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Height 110
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Lower [ 0.8 0.6 0.6 ]
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Upper [ 0.7 0.3 0.3 ]
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Sky [ 0.83 0.75 0.65 ]
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Sunset [ 0.7 0.7 0.8 ]
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CloudHeight 20
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CloudSpeed 32
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CloudMap "mars-clouds.dds"
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Mie 0.0024
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MieAsymmetry -0.15
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Rayleigh [ 0.0010 0.0006 0.0003 ]
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Absorption [ 0 0 0 ]
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MieScaleHeight 11
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}
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CustomOrbit "vsop87-mars"
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# Overridden by CustomOrbit
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# EllipticalOrbit
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# {
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# Epoch 2457754.5 # 2017 Jan 01
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# Period 1.880920881311
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# SemiMajorAxis 1.523730861440858
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# Eccentricity 0.09351281582486497
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# Inclination 1.848383740665303
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# AscendingNode 49.50720731023872
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# ArgOfPericenter 286.6752161228218
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# MeanAnomaly 33.24771046442243
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# }
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BodyFrame { EquatorJ2000 {} }
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CustomRotation "iau-mars"
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# Overriden by CustomRotation
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# UniformRotation
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# {
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# Period 24.622962156
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# Inclination 37.11350
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# AscendingNode 47.68143
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# MeridianAngle 176.630
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# }
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GeomAlbedo 0.174821
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BondAlbedo 0.290
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TempDiscrepancy 2
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InfoURL "https://en.wikipedia.org/wiki/Mars"
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}
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"Phobos:Mars I" "Sol/Mars"
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{
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Class "minormoon"
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Mesh "phobos.cmod"
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Orientation [ 90 0 1 0 ]
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Texture "phobos.*"
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Radius 13.5
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OrbitFrame
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{
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EclipticJ2000 { Center "Sol/Mars" }
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}
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EllipticalOrbit
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{
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Epoch 2455570.5 # 2011 Jan 09
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Period 0.31891023
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SemiMajorAxis 9376
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Eccentricity 0.0151
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Inclination 25.643
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AscendingNode 83.152
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ArgOfPericenter 297.757
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MeanAnomaly 121.066
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}
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BodyFrame { EquatorJ2000 {} }
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CustomRotation "iau-phobos"
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# Overriden by CustomRotation
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# UniformRotation
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# {
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# Inclination 37.10
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# AscendingNode 47.68
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# MeridianAngle 35.06
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# }
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GeomAlbedo 0.071
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InfoURL "https://en.wikipedia.org/wiki/Phobos_(moon)"
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}
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"Deimos:Mars II" "Sol/Mars"
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{
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Class "minormoon"
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Mesh "deimos.cmod"
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Texture "deimos.*"
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Radius 7.5
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OrbitFrame
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{
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EclipticJ2000 { Center "Sol/Mars" }
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}
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EllipticalOrbit
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{
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Epoch 2443431.5 # 1977 Oct 15
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Period 1.2624407
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SemiMajorAxis 23458
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Eccentricity 0.00033
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Inclination 24.167
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AscendingNode 84.377
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ArgOfPericenter 61.617
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MeanAnomaly 213.688
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}
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BodyFrame { EquatorJ2000 {} }
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CustomRotation "iau-deimos"
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# Overriden by CustomRotation
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# UniformRotation
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# {
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# Inclination 36.48
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# AscendingNode 47.65
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# MeridianAngle 79.41
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# }
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GeomAlbedo 0.068
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InfoURL "https://en.wikipedia.org/wiki/Deimos_(moon)"
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}
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"Jupiter" "Sol"
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{
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Class "planet"
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Texture "jupiter.*" # from 2000 by Cassini-Huygens
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Color [ 1.0 0.908 0.720 ]
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Radius 71492
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Oblateness 0.06487
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Atmosphere
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{
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Height 1000
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Mie 0.001
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MieScaleHeight 27
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MieAsymmetry -0.15
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Rayleigh [ 0.00018 0.00034 0.00070 ]
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Absorption [ 0.00050 0.00070 0.00100 ]
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}
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CustomOrbit "vsop87-jupiter"
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# Overridden by CustomOrbit
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# EllipticalOrbit
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# {
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# Epoch 2457754.5 # 2017 Jan 01
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# Period 11.8595633820361
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# SemiMajorAxis 5.202097143329861
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# Eccentricity 0.04890570181149351
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|
# Inclination 1.303729399278313
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|
# AscendingNode 100.5170015792149
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# ArgOfPericenter 273.721095361612
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# MeanAnomaly 176.1022184526773
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# }
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BodyFrame { EclipticJ2000 {} }
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UniformRotation # from Celestia Origin
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{
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Period 9.92491250
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Inclination 2.22
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AscendingNode 337.80
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MeridianAngle 305.38
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}
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# v1.6 comments:
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# IAU rotation not used for Jupiter; it is based on System III
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# (radio emissions), not the cloud positions. In Celestia, we're
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# more interested in having the Great Red Spot appear in the
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# (approximately) correct place.
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# BodyFrame { EclipticJ2000 {} }
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# UniformRotation
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# {
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# Period 9.927953 # System II (for GRS)
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# # Period 9.92491250 # System III (radio emissions)
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# Inclination 2.22
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# AscendingNode 337.80
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|
# MeridianAngle 334 # for correct position of GRS, July 2008
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# (equal to 461 minus current W longitude of GRS)
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# MeridianAngle 305.38 # correct System III prime meridian
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# }
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|
GeomAlbedo 0.510901
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|
BondAlbedo 0.503
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|
TempDiscrepancy 62.5 # for 1 bar level
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InfoURL "https://en.wikipedia.org/wiki/Jupiter"
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}
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AltSurface "2018 (Hubble)" "Sol/Jupiter"
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{
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Texture "jupiter-2018.*"
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}
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"Io:Jupiter I" "Sol/Jupiter"
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{
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Class "moon"
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Texture "io.*"
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# NightTexture "io-night.png"
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# NormalMap "io-normal.*"
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Color [ 1.0 0.9 0.6 ]
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SemiAxes [ 1830 1818.7 1815.3 ]
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Atmosphere
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{
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Height 200
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Mie 0.00002
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MieScaleHeight 50
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}
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CustomOrbit "io"
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# Overridden by CustomOrbit
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# OrbitFrame
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# {
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# EclipticJ2000 { Center "Sol/Jupiter" }
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|
# }
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# EllipticalOrbit
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|
# {
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|
# Epoch 2457754.5 # 2017 Jan 01
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|
# Period 1.769137786
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|
# SemiMajorAxis 421800
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|
# Eccentricity 0.0041
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|
# Inclination 2.190
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|
# AscendingNode 337.909
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|
# ArgOfPericenter 153.044
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|
# MeanAnomaly 211.920
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# }
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BodyFrame { EquatorJ2000 {} }
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CustomRotation "iau-io"
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# Overriden by CustomRotation
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|
# UniformRotation
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|
# {
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|
# Inclination 25.50
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|
# AscendingNode 358.05
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|
# MeridianAngle 200.39
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|
# }
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GeomAlbedo 0.63
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|
BondAlbedo 0.56
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|
TempDiscrepancy 11
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|
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InfoURL "https://en.wikipedia.org/wiki/Io_(moon)"
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}
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AltSurface "Limit of knowledge" "Sol/Jupiter/Io"
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|
{
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Texture "io.*"
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|
OverlayTexture "io-lok-mask.png"
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}
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|
"Europa:Jupiter II" "Sol/Jupiter"
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|
{
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Class "moon"
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|
Texture "europa.*"
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|
# NormalMap "europa-normal.*"
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|
Color [ 1.0 1.0 0.9 ]
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|
Radius 1560.8
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|
CustomOrbit "europa"
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|
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|
# Overridden by CustomOrbit
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|
# OrbitFrame
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|
# {
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|
# EclipticJ2000 { Center "Sol/Jupiter" }
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|
# }
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|
# EllipticalOrbit
|
|
# {
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|
# Epoch 2457754.5 # 2017 Jan 01
|
|
# Period 3.551181
|
|
# SemiMajorAxis 671100
|
|
# Eccentricity 0.0094
|
|
# Inclination 2.689
|
|
# AscendingNode 338.535
|
|
# ArgOfPericenter 340.607
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|
# MeanAnomaly 99.955
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|
# }
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|
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|
BodyFrame { EquatorJ2000 {} }
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|
CustomRotation "iau-europa"
|
|
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# Overriden by CustomRotation
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|
# UniformRotation
|
|
# {
|
|
# Inclination 25.49
|
|
# AscendingNode 358.08
|
|
# MeridianAngle 36.022
|
|
# }
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|
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|
GeomAlbedo 0.67
|
|
BondAlbedo 0.68
|
|
|
|
InfoURL "https://en.wikipedia.org/wiki/Europa_(moon)"
|
|
}
|
|
|
|
AltSurface "Limit of knowledge" "Sol/Jupiter/Europa"
|
|
{
|
|
Texture "europa.*"
|
|
OverlayTexture "europa-lok-mask.png"
|
|
}
|
|
|
|
"Ganymede:Jupiter III" "Sol/Jupiter"
|
|
{
|
|
Class "moon"
|
|
Texture "ganymede.*"
|
|
# NormalMap "ganymede-normal.*"
|
|
Color [ 0.8 0.6 0.5 ]
|
|
Radius 2634.1
|
|
CustomOrbit "ganymede"
|
|
|
|
# Overridden by CustomOrbit
|
|
# OrbitFrame
|
|
# {
|
|
# EclipticJ2000 { Center "Sol/Jupiter" }
|
|
# }
|
|
# EllipticalOrbit
|
|
# {
|
|
# Epoch 2457754.5 # 2017 Jan 01
|
|
# Period 7.15455296
|
|
# SemiMajorAxis 1070400
|
|
# Eccentricity 0.0013
|
|
# Inclination 2.293
|
|
# AscendingNode 340.773
|
|
# ArgOfPericenter 346.869
|
|
# MeanAnomaly 219.548
|
|
# }
|
|
|
|
BodyFrame { EquatorJ2000 {} }
|
|
CustomRotation "iau-ganymede"
|
|
|
|
# Overriden by CustomRotation
|
|
# UniformRotation
|
|
# {
|
|
# Inclination 25.43
|
|
# AscendingNode 358.20
|
|
# MeridianAngle 44.064
|
|
# }
|
|
|
|
GeomAlbedo 0.43
|
|
BondAlbedo 0.35
|
|
|
|
InfoURL "https://en.wikipedia.org/wiki/Ganymede_(moon)"
|
|
}
|
|
|
|
AltSurface "Limit of knowledge" "Sol/Jupiter/Ganymede"
|
|
{
|
|
Texture "ganymede.*"
|
|
OverlayTexture "ganymede-lok-mask.png"
|
|
}
|
|
|
|
"Callisto:Jupiter IV" "Sol/Jupiter"
|
|
{
|
|
Class "moon"
|
|
Texture "callisto.*"
|
|
# NormalMap "callisto-normal.*"
|
|
Color [ 0.6 0.6 0.4 ]
|
|
Radius 2410.3
|
|
CustomOrbit "callisto"
|
|
|
|
# Overridden by CustomOrbit
|
|
# OrbitFrame
|
|
# {
|
|
# EclipticJ2000 { Center "Sol/Jupiter" }
|
|
# }
|
|
# EllipticalOrbit
|
|
# {
|
|
# Epoch 2457754.5 # 2017 Jan 01
|
|
# Period 16.6890184
|
|
# SemiMajorAxis 1882700
|
|
# Eccentricity 0.0074
|
|
# Inclination 1.973
|
|
# AscendingNode 337.171
|
|
# ArgOfPericenter 28.724
|
|
# MeanAnomaly 98.879
|
|
# }
|
|
|
|
BodyFrame { EquatorJ2000 {} }
|
|
CustomRotation "iau-callisto"
|
|
|
|
# Overriden by CustomRotation
|
|
# UniformRotation
|
|
# {
|
|
# Inclination 25.17
|
|
# AscendingNode 358.72
|
|
# MeridianAngle 259.51
|
|
# }
|
|
|
|
GeomAlbedo 0.22
|
|
BondAlbedo 0.11
|
|
|
|
InfoURL "https://en.wikipedia.org/wiki/Callisto_(moon)"
|
|
}
|
|
|
|
AltSurface "Limit of knowledge" "Sol/Jupiter/Callisto"
|
|
{
|
|
Texture "callisto.*"
|
|
OverlayTexture "callisto-lok-mask.png"
|
|
}
|
|
|
|
"Saturn" "Sol"
|
|
{
|
|
Texture "saturn.*"
|
|
Color [ 1.0 0.735 0.486 ]
|
|
HazeColor [ 0.0 0.0 1 ]
|
|
HazeDensity 0.25
|
|
Radius 60268 # equatorial
|
|
Oblateness 0.0980
|
|
|
|
CustomOrbit "vsop87-saturn"
|
|
|
|
# Overridden by CustomOrbit
|
|
# EllipticalOrbit
|
|
# {
|
|
# Period 29.4577
|
|
# SemiMajorAxis 9.5371
|
|
# Eccentricity 0.0542
|
|
# Inclination 2.4845
|
|
# AscendingNode 113.715
|
|
# LongOfPericenter 92.432
|
|
# MeanLongitude 49.944
|
|
# }
|
|
|
|
Atmosphere
|
|
{
|
|
Height 300
|
|
Lower [ 0.8 0.75 0.65 ]
|
|
Upper [ 0.6 0.55 0.45 ]
|
|
Sky [ 0.8 0.8 0.5 ]
|
|
}
|
|
|
|
BodyFrame { EclipticJ2000 {} }
|
|
UniformRotation
|
|
{
|
|
Period 10.65622222 # System III (magnetic field)
|
|
Inclination 28.052
|
|
AscendingNode 169.528
|
|
MeridianAngle 358.93 # correct System III prime meridian
|
|
}
|
|
|
|
GeomAlbedo 0.499740
|
|
BondAlbedo 0.342
|
|
TempDiscrepancy 52.5 # for 1 bar level
|
|
|
|
Rings
|
|
{
|
|
Inner 74500 # includes some ringlets inside edge of C ring at 74660
|
|
Outer 140220
|
|
Texture "saturn-rings.png"
|
|
}
|
|
}
|
|
|
|
"Prometheus:Saturn XVI:1980 S 27" "Sol/Saturn"
|
|
{
|
|
Texture "prometheus.*"
|
|
Mesh "prometheus.cmod"
|
|
Radius 74 # maximum semi-axis
|
|
MeshCenter [ 0.75 -2.68 1.064 ]
|
|
|
|
EllipticalOrbit
|
|
{
|
|
Epoch 2453005.5 # 2004 Jan 1 00:00UT
|
|
Period 0.612986
|
|
SemiMajorAxis 139380
|
|
Eccentricity 0.0023
|
|
Inclination 0.0056
|
|
AscendingNode 226.1099
|
|
LongOfPericenter 23.3280
|
|
MeanLongitude 266.2144
|
|
}
|
|
|
|
# orientate meridian at epoch
|
|
UniformRotation
|
|
{
|
|
Epoch 2453005.5 # 2004 Jan 1 00:00UT
|
|
MeridianAngle 86
|
|
}
|
|
|
|
Albedo 0.6
|
|
}
|
|
|
|
"Pandora:Saturn XVII:1980 S 26" "Sol/Saturn"
|
|
{
|
|
Texture "asteroid.jpg"
|
|
Mesh "pandora.cmod"
|
|
Radius 57 # maximum semi-axis
|
|
MeshCenter [ 0.692 -1.454 -0.422 ]
|
|
|
|
EllipticalOrbit
|
|
{
|
|
Epoch 2453005.5 # 2004 Jan 1 00:00UT
|
|
Period 0.6285036
|
|
SemiMajorAxis 141710
|
|
Eccentricity 0.0042
|
|
Inclination 0.0522
|
|
AscendingNode 290.0163
|
|
LongOfPericenter 10.4899
|
|
MeanLongitude 212.6961
|
|
}
|
|
|
|
# orientate meridian at epoch
|
|
UniformRotation
|
|
{
|
|
Epoch 2453005.5 # 2004 Jan 1 00:00UT
|
|
MeridianAngle 33
|
|
}
|
|
|
|
Albedo 0.5
|
|
}
|
|
|
|
"Epimetheus:Saturn XI:1980 S 3" "Sol/Saturn"
|
|
{
|
|
Texture "epimetheus.*"
|
|
Mesh "epimetheus.cmod"
|
|
Radius 72 # maximum semi-axis
|
|
MeshCenter [ -5.196 -2.241 -1.878 ]
|
|
|
|
EllipticalOrbit
|
|
{
|
|
Epoch 2453005.5 # 2004 Jan 1 00:00UT
|
|
Period 0.6945 # 0.6943: period set to Janus/Epimetheus average
|
|
SemiMajorAxis 151410
|
|
Eccentricity 0.0098
|
|
Inclination 0.3541
|
|
AscendingNode 45.5973
|
|
LongOfPericenter 358.5774
|
|
MeanLongitude 306.0531
|
|
}
|
|
|
|
# orientate meridian at epoch
|
|
UniformRotation
|
|
{
|
|
Epoch 2453005.5 # 2004 Jan 1 00:00UT
|
|
MeridianAngle 126
|
|
}
|
|
|
|
Albedo 0.5
|
|
}
|
|
|
|
AltSurface "Limit of knowledge" "Sol/Saturn/Epimetheus"
|
|
{
|
|
Texture "epimetheus-lok.*"
|
|
}
|
|
|
|
"Janus:Saturn X:1980 S 1" "Sol/Saturn"
|
|
{
|
|
Texture "janus.*"
|
|
Mesh "janus.cmod"
|
|
Radius 96 # maximum semi-axis
|
|
MeshCenter [ -1.552 1.358 2.257 ]
|
|
|
|
EllipticalOrbit
|
|
{
|
|
Epoch 2453005.5 # 2004 Jan 1 00:00UT
|
|
Period 0.6945 # 0.6947: period set to Janus/Epimetheus average
|
|
SemiMajorAxis 151460
|
|
Eccentricity 0.0067
|
|
Inclination 0.1649
|
|
AscendingNode 8.1758
|
|
LongOfPericenter 248.2856
|
|
MeanLongitude 131.5137
|
|
}
|
|
|
|
# orientate meridian at epoch
|
|
UniformRotation
|
|
{
|
|
Epoch 2453005.5 # 2004 Jan 1 00:00UT
|
|
MeridianAngle 312
|
|
}
|
|
|
|
Albedo 0.6
|
|
}
|
|
|
|
"Mimas:Saturn I" "Sol/Saturn"
|
|
{
|
|
Texture "mimas.*"
|
|
Radius 198.6
|
|
|
|
CustomOrbit "mimas"
|
|
|
|
# Overridden by CustomOrbit
|
|
# EllipticalOrbit
|
|
# {
|
|
# Period 0.9424218
|
|
# SemiMajorAxis 185520
|
|
# Eccentricity 0.0202
|
|
# Inclination 1.53
|
|
# MeanAnomaly 23
|
|
# }
|
|
|
|
BodyFrame { EquatorJ2000 {} }
|
|
CustomRotation "iau-mimas"
|
|
|
|
# Overriden by CustomRotation
|
|
# UniformRotation
|
|
# {
|
|
# Inclination 6.48
|
|
# AscendingNode 130.66
|
|
# MeridianAngle 337.46
|
|
# }
|
|
|
|
Albedo 0.5
|
|
}
|
|
|
|
|
|
"Enceladus:Saturn II" "Sol/Saturn"
|
|
{
|
|
Texture "enceladus.*"
|
|
Radius 249.4
|
|
|
|
CustomOrbit "enceladus"
|
|
|
|
# Overridden by CustomOrbit
|
|
# EllipticalOrbit
|
|
# {
|
|
# Period 1.370218
|
|
# SemiMajorAxis 238020
|
|
# Eccentricity 0.0045
|
|
# Inclination 0.02
|
|
# MeanAnomaly 215
|
|
# }
|
|
|
|
BodyFrame { EquatorJ2000 {} }
|
|
CustomRotation "iau-enceladus"
|
|
|
|
# Overriden by CustomRotation
|
|
# UniformRotation
|
|
# {
|
|
# Inclination 6.48
|
|
# AscendingNode 130.66
|
|
# MeridianAngle 2.82
|
|
# }
|
|
|
|
GeomAlbedo 1.375
|
|
BondAlbedo 0.81
|
|
TempDiscrepancy 15.35
|
|
}
|
|
|
|
"Tethys:Saturn III" "Sol/Saturn"
|
|
{
|
|
Texture "tethys.*"
|
|
Radius 529.9
|
|
|
|
CustomOrbit "tethys"
|
|
|
|
# Overridden by CustomOrbit
|
|
# EllipticalOrbit
|
|
# {
|
|
# Period 1.887802
|
|
# SemiMajorAxis 294660
|
|
# Eccentricity 0.0
|
|
# Inclination 1.09
|
|
# MeanAnomaly 98
|
|
# }
|
|
|
|
BodyFrame { EquatorJ2000 {} }
|
|
CustomRotation "iau-tethys"
|
|
|
|
# Overriden by CustomRotation
|
|
# UniformRotation
|
|
# {
|
|
# Inclination 6.48
|
|
# AscendingNode 130.66
|
|
# MeridianAngle 10.45
|
|
# }
|
|
|
|
Albedo 0.9
|
|
}
|
|
|
|
"Dione:Saturn IV" "Sol/Saturn"
|
|
{
|
|
Texture "dione.*"
|
|
Radius 559
|
|
|
|
CustomOrbit "dione"
|
|
|
|
# Overridden by CustomOrbit
|
|
# EllipticalOrbit
|
|
# {
|
|
# Period 2.736915
|
|
# SemiMajorAxis 377400
|
|
# Eccentricity 0.0022
|
|
# Inclination 0.02
|
|
# MeanAnomaly 310
|
|
# }
|
|
|
|
BodyFrame { EquatorJ2000 {} }
|
|
CustomRotation "iau-dione"
|
|
|
|
# Overriden by CustomRotation
|
|
# UniformRotation
|
|
# {
|
|
# Inclination 6.48
|
|
# AscendingNode 130.66
|
|
# MeridianAngle 357.00
|
|
# }
|
|
|
|
Albedo 0.7
|
|
}
|
|
|
|
"Rhea:Saturn V" "Sol/Saturn"
|
|
{
|
|
Texture "rhea.*"
|
|
Radius 764
|
|
|
|
CustomOrbit "rhea"
|
|
|
|
# Overridden by CustomOrbit
|
|
# EllipticalOrbit
|
|
# {
|
|
# Period 4.517500
|
|
# SemiMajorAxis 527040
|
|
# Eccentricity 0.0010
|
|
# Inclination 0.35
|
|
# MeanAnomaly 190
|
|
# }
|
|
|
|
BodyFrame { EquatorJ2000 {} }
|
|
CustomRotation "iau-rhea"
|
|
|
|
# Overriden by CustomRotation
|
|
# UniformRotation
|
|
# {
|
|
# Inclination 6.45
|
|
# AscendingNode 130.38
|
|
# MeridianAngle 235.16
|
|
# }
|
|
|
|
Albedo 0.7
|
|
}
|
|
|
|
"Titan:Saturn VI" "Sol/Saturn"
|
|
{
|
|
Texture "titan.*"
|
|
Color [0.96 0.805 0.461 ]
|
|
# HazeColor [ 0.781 0.629 0.975 ]
|
|
HazeDensity 0.6
|
|
Radius 2575
|
|
|
|
Atmosphere
|
|
{
|
|
Height 500.0
|
|
Lower [ 0.477 0.367 0.211 ]
|
|
Upper [ 0.96 0.805 0.461 ]
|
|
Sky [ 0.3 0 0 ]
|
|
|
|
Mie 0.0001
|
|
MieAsymmetry -0.55
|
|
Rayleigh [ 0.0 0.0 0.00017 ]
|
|
Absorption [ 0.000075 0.00030 0.00025 ]
|
|
MieScaleHeight 220.0
|
|
CloudHeight 220.0
|
|
CloudSpeed 65.0
|
|
CloudMap "titan-clouds.*"
|
|
}
|
|
|
|
CustomOrbit "titan"
|
|
|
|
# Overridden by CustomOrbit
|
|
# EllipticalOrbit
|
|
# {
|
|
# Period 15.945421
|
|
# SemiMajorAxis 1221850
|
|
# Eccentricity 0.0292
|
|
# Inclination 0.33
|
|
# MeanAnomaly 120
|
|
# }
|
|
|
|
BodyFrame { EquatorJ2000 {} }
|
|
CustomRotation "iau-titan"
|
|
|
|
# Overriden by CustomRotation
|
|
# UniformRotation
|
|
# {
|
|
# Inclination 6.06
|
|
# AscendingNode 126.41
|
|
# MeridianAngle 189.64
|
|
# }
|
|
|
|
Albedo 0.21
|
|
}
|
|
|
|
"Hyperion:Saturn VII" "Sol/Saturn"
|
|
{
|
|
Mesh "hyperion.cmod"
|
|
Texture "hyperion.*" # Phil Stooke
|
|
Radius 171 # maximum semi-axis
|
|
MeshCenter [ -3.424 10.938 4.498 ]
|
|
|
|
CustomOrbit "hyperion"
|
|
|
|
# Overridden by CustomOrbit
|
|
# EllipticalOrbit
|
|
# {
|
|
# Period 21.276609
|
|
# SemiMajorAxis 1481100
|
|
# Eccentricity 0.1042
|
|
# Inclination 0.43
|
|
# MeanAnomaly 350
|
|
# }
|
|
|
|
# The rotation of Hyperion is chaotic; we don't attempt to model
|
|
# the rotation exactly, but instead use non-zero precession rate to
|
|
# make the rotation appear somewhat irregular.
|
|
PrecessingRotation
|
|
{
|
|
Inclination 61 # pole at time of
|
|
AscendingNode 145 # Voyager 2 encounter
|
|
Period 120 # 5-day best-fit rotation
|
|
PrecessionPeriod 0.0192 # 7-day wobble in light curve
|
|
}
|
|
|
|
Albedo 0.3
|
|
}
|
|
|
|
AltSurface "Limit of knowledge" "Sol/Saturn/Hyperion"
|
|
{
|
|
Texture "hyperion-lok.*" # Phil Stooke
|
|
}
|
|
|
|
"Iapetus:Saturn VIII" "Sol/Saturn"
|
|
{
|
|
Texture "iapetus.*"
|
|
Radius 718
|
|
|
|
CustomOrbit "iapetus"
|
|
|
|
# Overridden by CustomOrbit
|
|
# EllipticalOrbit
|
|
# {
|
|
# Period 79.330183
|
|
# SemiMajorAxis 3561300
|
|
# Eccentricity 0.0283
|
|
# Inclination 7.52
|
|
# MeanAnomaly 245
|
|
# }
|
|
|
|
BodyFrame { EquatorJ2000 {} }
|
|
CustomRotation "iau-iapetus"
|
|
|
|
# Overriden by CustomRotation
|
|
# UniformRotation
|
|
# {
|
|
# Inclination 14.97
|
|
# AscendingNode 48.16
|
|
# MeridianAngle 350.20
|
|
# }
|
|
|
|
Albedo 0.2
|
|
}
|
|
|
|
"Phoebe:Saturn IX" "Sol/Saturn"
|
|
{
|
|
Mesh "phoebe.cmod"
|
|
Texture "phoebe.*"
|
|
Radius 110
|
|
|
|
EllipticalOrbit
|
|
{
|
|
Epoch 2453168.3159722 # 2004 June 11 19:35 (Cassini encounter)
|
|
Period 548.21 # mean
|
|
SemiMajorAxis 12915512.0 # at epoch
|
|
Eccentricity 0.152924 # at epoch
|
|
Inclination 151.668210 # at epoch
|
|
AscendingNode 14.381449 # at epoch
|
|
ArgOfPericenter 281.103195 # at epoch
|
|
MeanAnomaly 31.776215 # at epoch
|
|
}
|
|
|
|
BodyFrame { EquatorJ2000 {} }
|
|
|
|
# Not used; IAU elements appear to be based on pre-Cassini
|
|
# information.
|
|
# CustomRotation "iau-phoebe"
|
|
|
|
UniformRotation
|
|
{
|
|
Period 9.2735 # Bauer et al, Astrophysical Journal 2004; 610(2): L57-L60
|
|
Inclination 12.1 # Porco et al, Science 2005; 307: 1237-42
|
|
AscendingNode 86.6 # Porco et al, Science 2005; 307: 1237-42
|
|
MeridianAngle 95 # approximate, from encounter images
|
|
}
|
|
|
|
Albedo 0.05
|
|
}
|
|
|
|
|
|
"Uranus" "Sol"
|
|
{
|
|
Texture "uranus.*"
|
|
Color [ 0.606 0.948 1.0 ]
|
|
HazeColor [ 0.5 0.8 1.0 ]
|
|
HazeDensity 0.2
|
|
Radius 25559 # equatorial
|
|
Oblateness 0.0229
|
|
|
|
CustomOrbit "vsop87-uranus"
|
|
|
|
# Overridden by CustomOrbit
|
|
# EllipticalOrbit
|
|
# {
|
|
# Period 84.0139
|
|
# SemiMajorAxis 19.1913
|
|
# Eccentricity 0.0472
|
|
# Inclination 0.7699
|
|
# AscendingNode 74.230
|
|
# LongOfPericenter 170.964
|
|
# MeanLongitude 313.232
|
|
# }
|
|
|
|
Atmosphere
|
|
{
|
|
Height 130
|
|
Lower [ 0.75 0.85 1.0 ]
|
|
Upper [ 0.5 0.8 0.9 ]
|
|
Sky [ 0.6 0.7 0.7 ]
|
|
}
|
|
|
|
BodyFrame { EclipticJ2000 {} }
|
|
UniformRotation
|
|
{
|
|
Period 17.24 # System III (magnetic field)
|
|
Inclination 97.722
|
|
AscendingNode 167.647
|
|
MeridianAngle 331.13 # correct System III prime meridian
|
|
}
|
|
|
|
GeomAlbedo 0.437118
|
|
BondAlbedo 0.300
|
|
TempDiscrepancy 17.8 # for 1 bar level
|
|
|
|
Rings
|
|
{
|
|
Inner 41837
|
|
Outer 51179
|
|
Texture "uranus-rings.png"
|
|
}
|
|
}
|
|
|
|
|
|
"Miranda:Uranus V" "Sol/Uranus"
|
|
{
|
|
Texture "miranda.*"
|
|
Radius 235.8
|
|
|
|
CustomOrbit "miranda"
|
|
|
|
# Overridden by CustomOrbit
|
|
# EllipticalOrbit
|
|
# {
|
|
# Period 1.413
|
|
# SemiMajorAxis 129800
|
|
# Eccentricity 0.0027
|
|
# Inclination 4.22
|
|
# MeanAnomaly 120
|
|
# }
|
|
|
|
BodyFrame { EquatorJ2000 {} }
|
|
CustomRotation "iau-miranda"
|
|
|
|
# Overriden by CustomRotation
|
|
# UniformRotation
|
|
# {
|
|
# Period 33.92350159 # enforce sync rotation
|
|
# Inclination 74.92
|
|
# AscendingNode 167.43
|
|
# MeridianAngle 149.30
|
|
# }
|
|
|
|
Albedo 0.32
|
|
}
|
|
|
|
AltSurface "Limit of knowledge" "Sol/Uranus/Miranda"
|
|
{
|
|
Texture "miranda.*"
|
|
OverlayTexture "miranda-lok-mask.png"
|
|
}
|
|
|
|
"Ariel:Uranus I" "Sol/Uranus"
|
|
{
|
|
Texture "ariel.*"
|
|
Radius 578.9
|
|
|
|
CustomOrbit "ariel"
|
|
|
|
# Overridden by CustomOrbit
|
|
# EllipticalOrbit
|
|
# {
|
|
# Period 2.520
|
|
# SemiMajorAxis 191200
|
|
# Eccentricity 0.0034
|
|
# Inclination 0.31
|
|
# MeanAnomaly 56
|
|
# }
|
|
|
|
BodyFrame { EquatorJ2000 {} }
|
|
CustomRotation "iau-ariel"
|
|
|
|
# Overriden by CustomRotation
|
|
# UniformRotation
|
|
# {
|
|
# Period 60.48909292 # enforce sync rotation
|
|
# Inclination 74.90
|
|
# AscendingNode 167.43
|
|
# MeridianAngle 23.78
|
|
# }
|
|
|
|
Albedo 0.39
|
|
}
|
|
|
|
AltSurface "Limit of knowledge" "Sol/Uranus/Ariel"
|
|
{
|
|
Texture "ariel.*"
|
|
OverlayTexture "ariel-lok-mask.png"
|
|
}
|
|
|
|
"Umbriel:Uranus II" "Sol/Uranus"
|
|
{
|
|
Texture "umbriel.*"
|
|
Radius 584.7
|
|
|
|
CustomOrbit "umbriel"
|
|
|
|
# Overridden by CustomOrbit
|
|
# EllipticalOrbit
|
|
# {
|
|
# Period 4.144
|
|
# SemiMajorAxis 266000
|
|
# Eccentricity 0.0050
|
|
# Inclination 0.36
|
|
# MeanAnomaly 280
|
|
# }
|
|
|
|
BodyFrame { EquatorJ2000 {} }
|
|
CustomRotation "iau-umbriel"
|
|
|
|
# Overriden by CustomRotation
|
|
# UniformRotation
|
|
# {
|
|
# Period 99.46022991 # enforce sync rotation
|
|
# Inclination 74.90
|
|
# AscendingNode 167.43
|
|
# MeridianAngle 71.95
|
|
# }
|
|
|
|
Albedo 0.21
|
|
}
|
|
|
|
AltSurface "Limit of knowledge" "Sol/Uranus/Umbriel"
|
|
{
|
|
Texture "umbriel.*"
|
|
OverlayTexture "umbriel-lok-mask.png"
|
|
}
|
|
|
|
"Titania:Uranus III" "Sol/Uranus"
|
|
{
|
|
Texture "titania.*"
|
|
Radius 788.9
|
|
|
|
CustomOrbit "titania"
|
|
|
|
# Overridden by CustomOrbit
|
|
# EllipticalOrbit
|
|
# {
|
|
# Period 8.706
|
|
# SemiMajorAxis 435800
|
|
# Eccentricity 0.0022
|
|
# Inclination 0.10
|
|
# MeanAnomaly 30
|
|
# }
|
|
|
|
BodyFrame { EquatorJ2000 {} }
|
|
CustomRotation "iau-titania"
|
|
|
|
# Overriden by CustomRotation
|
|
# UniformRotation
|
|
# {
|
|
# Period 208.94077099 # enforce sync rotation
|
|
# Inclination 74.90
|
|
# AscendingNode 167.43
|
|
# MeridianAngle 102.26
|
|
# }
|
|
|
|
Albedo 0.27
|
|
}
|
|
|
|
AltSurface "Limit of knowledge" "Sol/Uranus/Titania"
|
|
{
|
|
Texture "titania.*"
|
|
OverlayTexture "titania-lok-mask.png"
|
|
}
|
|
|
|
"Oberon:Uranus IV" "Sol/Uranus"
|
|
{
|
|
Texture "oberon.*"
|
|
Radius 761.4
|
|
|
|
CustomOrbit "oberon"
|
|
|
|
# Overridden by CustomOrbit
|
|
# EllipticalOrbit
|
|
# {
|
|
# Period 13.463
|
|
# SemiMajorAxis 583600
|
|
# Eccentricity 0.0008
|
|
# Inclination 0.10
|
|
# MeanAnomaly 150
|
|
# }
|
|
|
|
BodyFrame { EquatorJ2000 {} }
|
|
CustomRotation "iau-oberon"
|
|
|
|
# Overriden by CustomRotation
|
|
# UniformRotation
|
|
# {
|
|
# Period 323.117567539 # enforce sync rotation
|
|
# Inclination 74.90
|
|
# AscendingNode 167.43
|
|
# MeridianAngle 173.23
|
|
# }
|
|
|
|
Albedo 0.23
|
|
}
|
|
|
|
AltSurface "Limit of knowledge" "Sol/Uranus/Oberon"
|
|
{
|
|
Texture "oberon.*"
|
|
OverlayTexture "oberon-lok-mask.png"
|
|
}
|
|
|
|
|
|
"Neptune" "Sol"
|
|
{
|
|
Texture "neptune.*"
|
|
Color [ 0.523 0.848 1.0 ]
|
|
HazeColor [ 0.6 1 0.75 ]
|
|
HazeDensity 0.35
|
|
Radius 24766 # equatorial
|
|
Oblateness 0.017
|
|
|
|
CustomOrbit "vsop87-neptune"
|
|
|
|
# Overridden by CustomOrbit
|
|
# EllipticalOrbit
|
|
# {
|
|
# Period 164.793
|
|
# SemiMajorAxis 30.0690
|
|
# Eccentricity 0.0086
|
|
# Inclination 1.7692
|
|
# AscendingNode 131.722
|
|
# LongOfPericenter 44.971
|
|
# MeanLongitude 304.880
|
|
# }
|
|
|
|
Atmosphere
|
|
{
|
|
Height 130
|
|
Lower [ 0.6 0.65 1.0 ]
|
|
Upper [ 0.5 0.55 0.9 ]
|
|
Sky [ 0.5 0.7 0.9 ]
|
|
}
|
|
|
|
BodyFrame { EclipticJ2000 {} }
|
|
UniformRotation
|
|
{
|
|
Period 16.11 # System III (magnetic field)
|
|
Inclination 28.03
|
|
AscendingNode 49.24
|
|
MeridianAngle 228.66 # correct System III prime meridian
|
|
}
|
|
|
|
GeomAlbedo 0.409338
|
|
BondAlbedo 0.290
|
|
TempDiscrepancy 25.1 # for 1 bar level
|
|
|
|
Rings
|
|
{
|
|
Inner 53150
|
|
Outer 62947
|
|
Texture "neptune-rings.png"
|
|
}
|
|
}
|
|
|
|
"Larissa:Neptune VII:1989 N 2" "Sol/Neptune"
|
|
{
|
|
Texture "asteroid.jpg"
|
|
Mesh "larissa.cmod"
|
|
Radius 100 # maximum semi-axis
|
|
MeshCenter [ 4.564 -0.126 0.302 ]
|
|
|
|
EllipticalOrbit
|
|
{
|
|
Period 0.554654
|
|
SemiMajorAxis 73548
|
|
Eccentricity 0.0014
|
|
Inclination 0.744
|
|
AscendingNode 324.857
|
|
ArgOfPericenter 215.004 # J2000.0
|
|
MeanAnomaly 157.543
|
|
}
|
|
|
|
BodyFrame { EquatorJ2000 {} }
|
|
UniformRotation
|
|
{
|
|
Inclination 46.59
|
|
AscendingNode 29.36
|
|
MeridianAngle 179.41
|
|
}
|
|
|
|
Albedo 0.056
|
|
}
|
|
|
|
"Proteus:Neptune VIII:1989 N 1" "Sol/Neptune"
|
|
{
|
|
Mesh "proteus.cmod"
|
|
Texture "proteus.*" # Phil Stooke
|
|
Radius 219 # maximum semi-axis
|
|
MeshCenter [ -4.146 -0.022 5.153 ]
|
|
|
|
EllipticalOrbit
|
|
{
|
|
Epoch 2450085.5 # 1996 Jan 3 00:00UT
|
|
Period 1.122315 # mean
|
|
SemiMajorAxis 117647 # mean
|
|
Eccentricity 0.0005 # mean
|
|
Inclination 1.090 # at epoch
|
|
AscendingNode 330.943 # at epoch
|
|
ArgOfPericenter 267.246 # at epoch
|
|
MeanAnomaly 213.916 # at epoch
|
|
}
|
|
|
|
BodyFrame { EquatorJ2000 {} }
|
|
UniformRotation
|
|
{
|
|
Inclination 47.09
|
|
AscendingNode 29.27
|
|
MeridianAngle 93.38
|
|
}
|
|
|
|
Albedo 0.061
|
|
}
|
|
|
|
"Triton:Neptune I" "Sol/Neptune"
|
|
{
|
|
Texture "triton.*"
|
|
Radius 1353.4
|
|
|
|
Atmosphere
|
|
{
|
|
Height 1
|
|
Lower [ 0.5 0.5 0.5 ]
|
|
Upper [ 0.5 0.5 0.5 ]
|
|
Sky [ 0.0 0.0 0.0 ]
|
|
}
|
|
|
|
EllipticalOrbit
|
|
{
|
|
Epoch 2447763.5 # 1989 Aug 25 00:00UT (Voyager encounter)
|
|
Period 5.8768541 # mean
|
|
SemiMajorAxis 354765.286 # at epoch
|
|
Eccentricity 0.00002285 # at epoch
|
|
Inclination 156.826240 # at epoch
|
|
AscendingNode 147.899288 # at epoch
|
|
ArgOfPericenter 293.092400 # at epoch
|
|
MeanAnomaly 315.726316 # at epoch
|
|
}
|
|
|
|
BodyFrame { EquatorJ2000 {} }
|
|
UniformRotation
|
|
{
|
|
Epoch 2447763.5 # 1989 Aug 25 00:00UT (Voyager encounter)
|
|
Inclination 110.44 # at epoch
|
|
AscendingNode 206.17 # at epoch
|
|
MeridianAngle 77.41 # at epoch
|
|
}
|
|
|
|
Albedo 0.756
|
|
}
|
|
|
|
AltSurface "Limit of knowledge" "Sol/Neptune/Triton"
|
|
{
|
|
Texture "triton.*"
|
|
OverlayTexture "triton-lok-mask.png"
|
|
}
|
|
|
|
"Nereid:Neptune II" "Sol/Neptune"
|
|
{
|
|
Mesh "asteroid.cms"
|
|
Texture "asteroid.jpg"
|
|
Radius 170
|
|
|
|
EllipticalOrbit
|
|
{
|
|
Epoch 2447763.5 # 1989 Aug 25 00:00UT (Voyager encounter)
|
|
Period 360.13619 # mean
|
|
SemiMajorAxis 5513400 # mean
|
|
Eccentricity 0.7512 # mean
|
|
Inclination 28.385 # at epoch
|
|
AscendingNode 190.678 # at epoch
|
|
ArgOfPericenter 17.690 # at epoch
|
|
MeanAnomaly 36.056 # at epoch
|
|
}
|
|
|
|
# Figure of 11.52 +/- 0.14 hours from Grav, T. et al. (2003)
|
|
# "The Short Rotation Period of Nereid", ApJ 591
|
|
UniformRotation
|
|
{
|
|
Period 11.52
|
|
}
|
|
Albedo 0.155
|
|
}
|