496 lines
11 KiB
Plaintext
496 lines
11 KiB
Plaintext
# All asteroid colors (except for Dactyl) are derived from SMASS spectra
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# and converted to RGB values using Matt Wronkiewicz's spectrum2rgb utility
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# that is distributed with the Celestia source package.
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# A few main belt asteroids . .
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"Ceres" "Sol"
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{
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Class "asteroid"
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Texture "asteroid.jpg"
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Color [ 1.000 0.945 0.881 ]
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BlendTexture true
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Radius 487.5 # 975x909km
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Oblateness 0.068 # Thomas et al, Nature, 8 Sep 2005
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EllipticalOrbit
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{
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Epoch 2452600.5 # 2002 Nov 22 00:00UT
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Period 4.60014
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SemiMajorAxis 2.7660
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Eccentricity 0.0793
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Inclination 10.584
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AscendingNode 80.483
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ArgOfPericenter 74.043
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MeanAnomaly 232.067
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}
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RotationPeriod 9.075
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RotationEpoch 2449249.91125 # 1993 Sep 19 09:52:12UT
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Obliquity 11
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EquatorAscendingNode 29
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RotationOffset 339.85
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Albedo 0.113
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}
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"Pallas" "Sol"
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{
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Class "asteroid"
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Texture "asteroid.jpg"
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Color [ 1.000 0.952 0.903 ]
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BlendTexture true
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Radius 263
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EllipticalOrbit
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{
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Epoch 2452600.5 # 2002 Nov 22 00:00UT
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Period 4.61868
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SemiMajorAxis 2.7733
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Eccentricity 0.2300
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Inclination 34.846
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AscendingNode 173.166
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ArgOfPericenter 310.423
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MeanAnomaly 218.057
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}
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RotationPeriod 7.81323264
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Obliquity 102
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EquatorAscendingNode 162
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RotationOffset 352.77
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Albedo 0.159
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}
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"Juno" "Sol"
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{
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Class "asteroid"
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Texture "asteroid.jpg"
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Color [ 1.000 0.912 0.833 ]
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BlendTexture true
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Radius 130
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EllipticalOrbit
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{
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Epoch 2452600.5 # 2002 Nov 22 00:00UT
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Period 4.35540
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SemiMajorAxis 2.6669
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Eccentricity 0.2589
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Inclination 12.972
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AscendingNode 170.133
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ArgOfPericenter 247.948
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MeanAnomaly 119.146
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}
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RotationPeriod 7.811
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Obliquity 56
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EquatorAscendingNode 196
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Albedo 0.238
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}
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"Vesta" "Sol"
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{
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Class "asteroid"
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Mesh "vesta.cmod"
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Texture "asteroid.jpg"
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Color [ 1.000 0.923 0.851 ]
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BlendTexture true
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Radius 279 # maximum semi-axis
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MeshCenter [ 0.77 3.424 -0.554 ]
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InfoURL "http://www.solarviews.com/eng/vesta.htm"
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EllipticalOrbit
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{
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Epoch 2452000.5 # 2001 Apr 1 00:00UT
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Period 3.62729
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SemiMajorAxis 2.3670775
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Eccentricity 0.089753
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Inclination 7.1346
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AscendingNode 103.9510
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ArgOfPericenter 149.4585
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MeanAnomaly 104.980
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}
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RotationPeriod 5.342
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RotationEpoch 2450124.90833 # 1996 May 11 09:48UT
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Obliquity 40
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EquatorAscendingNode 91
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RotationOffset 325.77
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Albedo 0.423
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}
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# Some of the asteroids visited by spacecraft
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"Gaspra" "Sol"
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{
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Class "asteroid"
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Mesh "gaspra.cmod"
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Texture "gaspramosaic.*" # Phil Stooke
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Color [ 1.000 0.883 0.769 ]
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BlendTexture true
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Radius 9.1 # maximum semi-axis
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MeshCenter [ 1.540 -0.064 -0.118 ]
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EllipticalOrbit
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{
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Epoch 2448559.0 # 1991 Oct 29 12:00UT (Galileo encounter)
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Period 3.2837 # average
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SemiMajorAxis 2.2096348 # at epoch
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Eccentricity 0.1738752 # at epoch
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Inclination 4.0975771 # at epoch
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AscendingNode 253.445592 # at epoch
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ArgOfPericenter 129.045896 # at epoch
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MeanAnomaly 280.769206 # at epoch
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}
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RotationPeriod 7.042073
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Obliquity 69.28
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EquatorAscendingNode 109.59
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RotationOffset 58.865
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Albedo 0.1
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}
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"Ida" "Sol"
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{
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Class "asteroid"
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Mesh "ida.cmod"
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Texture "idamosaic.*" # Phil Stooke
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Color [ 1.000 0.901 0.815 ]
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BlendTexture true
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Radius 28.9 # maximum semi-axis
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MeshCenter [ -1.424 -0.417 0.115 ]
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EllipticalOrbit
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{
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Epoch 2449228.0 # 1993 Aug 28 12:00UT (Galileo encounter)
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Period 4.8417 # mean
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SemiMajorAxis 2.863731 # at epoch
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Eccentricity 0.043109 # at epoch
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Inclination 1.137110 # at epoch
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AscendingNode 324.586055 # at epoch
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ArgOfPericenter 113.017101 # at epoch
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MeanAnomaly 131.594945 # at epoch
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}
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RotationPeriod 4.633632
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Obliquity 156.96
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EquatorAscendingNode 352.77
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RotationOffset 359.46
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Albedo 0.24
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}
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"Dactyl" "Sol/Ida"
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{
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# Data for Dactyl taken from:
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# Petit et al.: The Long-Term Dynamics of Dactyl's Orbit
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# (Icarus 1997: 130; 177-197) - linked in the InfoURL
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InfoURL "http://www.lpl.arizona.edu/~hurfordt/research/papers/Icarus130.pdf"
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Class "asteroid"
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Texture "asteroid.jpg"
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# Use the same color as for Ida--uncertain if this is correct
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Color [ 1.000 0.901 0.815 ]
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BlendTexture true
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Mesh "roughsphere.cms"
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Radius 0.7
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EllipticalOrbit
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{
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Epoch 2449228.2028 # 1993 Aug 28 16:52:05UT
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Period 0.96534 # stable 5:1 resonant orbit (Petit et al.)
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SemiMajorAxis 83.5 # stable 5:1 resonant orbit (Petit et al.)
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Eccentricity 0.13 # stable 5:1 resonant orbit (Petit et al.)
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LongOfPericenter 310 # stable pericenter at 90:E Ida longitude (Petit et al.)
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AscendingNode 90 # VERY approximate - chosen to place Dactyl north
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# of Ida's equator, as seen at time of Galileo encounter
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Inclination 8 # estimated at 7-9 degrees (Petit et al.)
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}
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RotationOffset 123 # place prime meridian facing Ida
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Albedo 0.2
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}
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"Eros" "Sol"
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{
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Class "asteroid"
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Mesh "eros.cmod"
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Texture "eros.*"
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# NormalMap "erosbump2k.jpg"
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Color [ 1.000 0.880 0.764 ]
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# The texture is already tinted with the asteroid color
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#BlendTexture true
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Radius 16.3 # maximum semi-axis
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MeshCenter [ -1.262 0.168 -0.164 ]
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EllipticalOrbit
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{
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Epoch 2451171.0 # 1998 Dec 23 12:00UT (NEAR-Shoemaker encounter)
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Period 1.761 # average
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SemiMajorAxis 1.458261 # at epoch
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Eccentricity 0.222885 # at epoch
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Inclination 10.830143 # at epoch
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AscendingNode 304.430882 # at epoch
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ArgOfPericenter 178.613184 # at epoch
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MeanAnomaly 208.403434 # at epoch
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}
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RotationPeriod 5.270
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Obliquity 78.70
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EquatorAscendingNode 107.23
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RotationOffset 338.165
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Albedo 0.16
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}
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# Radar-imaged asteroids
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"Toutatis" "Sol"
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{
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Class "asteroid"
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Mesh "toutatis.cmod"
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Texture "asteroid.jpg"
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Color [ 1.000 0.904 0.803 ]
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BlendTexture true
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Radius 2.3 # maximum semi-axis
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MeshCenter [ 0.0313 0.2171 0.0064 ]
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InfoURL "http://echo.jpl.nasa.gov/asteroids/4179_Toutatis/toutatis.html"
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EllipticalOrbit
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{
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Epoch 2452200.5 # 2001 Oct 18 00:00UT
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Period 3.976715
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SemiMajorAxis 2.5100537
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Eccentricity 0.6342274
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Inclination 0.46959
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AscendingNode 128.24788
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ArgOfPericenter 274.78070
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MeanAnomaly 86.28120
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}
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RotationPeriod 129.6 # 5.41 days
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Obliquity 145
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PrecessionRate -48.98 # 7.35 day period
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Albedo 0.16
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}
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"Geographos" "Sol"
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{
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Class "asteroid"
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Mesh "geographos.cmod"
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Texture "asteroid.jpg"
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Color [ 1.000 0.901 0.802 ]
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BlendTexture true
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Radius 2.53 # maximum semi-axis
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MeshCenter [ 0.154 -0.002 -0.026 ]
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InfoURL "http://www.solarviews.com/eng/geograph.htm"
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EllipticalOrbit
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{
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Epoch 2450800.5 # 1997 Dec 18 00:00UT
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Period 1.39
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SemiMajorAxis 1.2455
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Eccentricity 0.3354
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Inclination 13.34
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AscendingNode 337.352
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ArgOfPericenter 276.756
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MeanAnomaly 180.595
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}
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RotationPeriod 5.223
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Obliquity 136
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EquatorAscendingNode 145
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Albedo 0.326
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}
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"Kleopatra" "Sol"
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{
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Class "asteroid"
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Mesh "kleopatra.cmod"
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Texture "asteroid.jpg"
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Color [ 1.000 0.932 0.888 ]
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BlendTexture true
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Radius 110 # maximum semi-axis
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MeshCenter [ -3.049 2.379 1.429 ]
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InfoURL "http://echo.jpl.nasa.gov/~ostro/kle/index.html"
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EllipticalOrbit
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{
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Epoch 2450800.5 # 1997 Dec 12 00:00UT
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Period 4.67
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SemiMajorAxis 2.791
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Eccentricity 0.2531
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Inclination 13.138
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AscendingNode 215.699
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ArgOfPericenter 179.350
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MeanAnomaly 225.804
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}
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RotationPeriod 5.385
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Obliquity 63
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EquatorAscendingNode 162
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Albedo 0.16
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# Class M
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}
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"1998 KY26" "Sol"
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{
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Class "asteroid"
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Mesh "ky26.cmod"
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Texture "asteroid.jpg"
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Radius 0.015 # maximum semi-axis
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MeshCenter [ -0.000718 -0.000099 0.000556 ]
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InfoURL "http://echo.jpl.nasa.gov/~ostro/KY26/index.html"
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EllipticalOrbit
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{
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Epoch 2452000.5 # 2001 Apr 1 00:00UT
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Period 1.3752
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SemiMajorAxis 1.2320798
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Eccentricity 0.20151423
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Inclination 1.48127
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AscendingNode 84.45490
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ArgOfPericenter 209.14766
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MeanAnomaly 356.6879717
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}
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RotationPeriod 0.178
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Albedo 0.15
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}
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"Bacchus" "Sol"
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{
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Class "asteroid"
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Mesh "bacchus.cmod"
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Texture "asteroid.jpg"
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Color [ 1.000 0.899 0.777 ]
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BlendTexture true
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Radius 0.55 # maximum semi-axis
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MeshCenter [ -0.00936 -0.00610 0.00289 ]
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InfoURL "http://echo.jpl.nasa.gov/~ostro/bacchus/index.html"
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EllipticalOrbit
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{
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Epoch 2452000.5 # 2001 Apr 1 00:00UT
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Period 1.1223
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SemiMajorAxis 1.0781035
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Eccentricity 0.34951251
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Inclination 9.43160
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AscendingNode 33.23590
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ArgOfPericenter 55.18040
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MeanAnomaly 229.8627955
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}
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RotationPeriod 14.90
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Obliquity 116
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EquatorAscendingNode 114
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Albedo 0.15
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}
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"Golevka" "Sol"
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{
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Class "asteroid"
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Mesh "golevka.cmod"
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Texture "asteroid.jpg"
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Color [ 1.000 0.856 0.747 ]
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BlendTexture true
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Radius 0.34 # maximum semi-axis
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MeshCenter [ -0.0289 -0.0111 -0.0331 ]
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InfoURL "http://echo.jpl.nasa.gov/~ostro/gol/index.html"
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EllipticalOrbit
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{
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Epoch 2452000.5 # 2001 Apr 1 00:00UT
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Period 3.995
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SemiMajorAxis 2.5120500
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Eccentricity 0.60117380
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Inclination 2.28701
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AscendingNode 212.16560
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ArgOfPericenter 65.25133
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MeanAnomaly 159.8983670
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}
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RotationPeriod 6.0289
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Obliquity 135
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EquatorAscendingNode 292
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Albedo 0.15
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}
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"Castalia" "Sol"
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{
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Class "asteroid"
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Mesh "castalia.cmod"
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Texture "asteroid.jpg"
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BlendTexture true
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Radius 0.81 # maximum semi-axis
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MeshCenter [ -0.0456 -0.0347 -0.0178 ]
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InfoURL "http://echo.jpl.nasa.gov/asteroids/4769_Castalia/cast01.html"
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EllipticalOrbit
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{
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Epoch 2452000.5 # 2001 Apr 1 00:00UT
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Period 1.096
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SemiMajorAxis 1.0632007
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Eccentricity 0.48324394
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Inclination 8.88806
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AscendingNode 325.71246
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ArgOfPericenter 121.26355
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MeanAnomaly 152.5186007
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}
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RotationPeriod 4.095
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Obliquity 146
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EquatorAscendingNode 325
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Albedo 0.15
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}
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# Centaurs
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"Chiron" "Sol"
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{
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Class "asteroid"
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Texture "asteroid.jpg"
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Color [ 1.000 0.960 0.919 ]
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BlendTexture true
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Radius 144
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EllipticalOrbit
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{
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Epoch 2449608.5 # 1994 Sep 13 00:00UT
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Period 50.90359
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SemiMajorAxis 13.734941
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Eccentricity 0.384424
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Inclination 6.927771
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AscendingNode 209.395188
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ArgOfPericenter 339.432152
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MeanAnomaly 349.983669
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}
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RotationPeriod 5.918
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Albedo 0.048
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}
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