366 lines
7.1 KiB
Plaintext
366 lines
7.1 KiB
Plaintext
# The largest Edgeworth-Kuiper belt objects
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#136199 Eris (2003 UB313)
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"Eris" "Sol" {
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# Higher albedo and lower radius than first reported.
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# Data from HST results by Brown et al. ApJ 2006:
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# http://www.gps.caltech.edu/~mbrown/papers/ps/xsize.pdf
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Class "asteroid"
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Texture "asteroid.jpg"
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Radius 1200
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# no evidence of reddening
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InfoURL "http://www.gps.caltech.edu/~mbrown/planetlila/index.html"
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EllipticalOrbit {
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Epoch 2453600.5 # 2005 Aug 18 00:00UT
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Period 557.148
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SemiMajorAxis 67.709
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Eccentricity 0.4416
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Inclination 44.177
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AscendingNode 35.875
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ArgOfPericenter 151.311
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MeanAnomaly 197.538
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}
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Albedo 0.86
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UniformRotation
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{
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Period 48.0 # guess
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Inclination 79.8 # spin axis assumed to match
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AscendingNode 144 # orbit of Dysnomia
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}
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}
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#136199 Eris I (2005 (2003 UB313) 1)
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"Dysnomia" "Sol/Eris" {
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Class "asteroid"
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Mesh "asteroid.cms"
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Texture "asteroid.jpg"
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Radius 100 # ~0.2% of Eris brightness
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InfoURL "http://www.gps.caltech.edu/~mbrown/planetlila/moon/"
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# Orbit from Brown ME, Schaller EL: Science 2007; 316: 1585
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OrbitFrame {
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EquatorJ2000 { Center "Sol/Eris" }
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}
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EllipticalOrbit
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{
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Epoch 2453979.0 # 2006 Aug 31 12:00UT
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Period 15.772
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SemiMajorAxis 37430
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Inclination 61.3
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AscendingNode 139
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MeanAnomaly 328.6
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}
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}
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"2005 FY9" "Sol" {
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Class "asteroid"
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Texture "asteroid.jpg"
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Radius 850 # estimate
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EllipticalOrbit {
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Epoch 2453600.5 # 2005 Aug 18 00:00UT
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Period 308.329
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SemiMajorAxis 45.640
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Eccentricity 0.1519
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Inclination 28.998
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AscendingNode 79.416
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ArgOfPericenter 245.848
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MeanAnomaly 213.919
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}
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UniformRotation
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{
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Period 48.0 # guess
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}
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}
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"2003 EL61" "Sol" {
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Class "asteroid"
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Texture "asteroid.jpg"
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Radius 750 # estimate
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InfoURL "http://www.gps.caltech.edu/~mbrown/2003EL61/"
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EllipticalOrbit {
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Epoch 2453600.5 # 2005 Aug 18 00:00UT
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Period 285.312
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SemiMajorAxis 43.339
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Eccentricity 0.1888
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Inclination 28.195
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AscendingNode 121.895
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ArgOfPericenter 239.512
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MeanAnomaly 198.075
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}
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UniformRotation
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{
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Period 3.9152
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}
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}
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"2005 (2003 EL61) 1" "Sol/2003 EL61" {
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Class "asteroid"
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Mesh "asteroid.cms"
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Texture "asteroid.jpg"
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Radius 150 # ~1% of system mass
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InfoURL "http://www.gps.caltech.edu/~mbrown/2003EL61/"
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# Orbit from Brown ME et al: http://www.gps.caltech.edu/%7Embrown/papers/ps/EL61.pdf
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EllipticalOrbit {
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Period 49.12
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SemiMajorAxis 49500
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Eccentricity 0.050
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Inclination 234.8
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AscendingNode 26.1
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ArgOfPericenter 278.6
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MeanAnomaly 16.71
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}
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Obliquity 235 # to match orbit
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EquatorAscendingNode 25 #
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}
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"2005 (2003 EL61) 2" "Sol/2003 EL61" {
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Class "asteroid"
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Mesh "asteroid.cms"
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Texture "asteroid.jpg"
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Radius 90 # ~0.2% of system mass
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InfoURL "http://www.gps.caltech.edu/~mbrown/2003EL61/"
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EllipticalOrbit {
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Period 34.1
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SemiMajorAxis 39300
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Inclination 275 # ~40 degrees to 2005 (2003 EL61) 1
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AscendingNode 25 #
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}
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Obliquity 275 # to match orbit
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EquatorAscendingNode 25 #
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}
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# 90482 Orcus (2004 DW)
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"Orcus" "Sol" {
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Class "asteroid"
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Texture "asteroid.jpg"
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Color [ 0.65 0.45 0.35 ]
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BlendTexture true
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Radius 800
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InfoURL "http://www.gps.caltech.edu/~chad/2004dw/"
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EllipticalOrbit {
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Period 245.976
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SemiMajorAxis 39.258
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Eccentricity 0.2258
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Inclination 20.539
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AscendingNode 268.457
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ArgOfPericenter 73.731
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MeanAnomaly 150.066
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}
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Albedo 0.09
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UniformRotation
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{
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Period 48.0 # guess
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}
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}
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"2004 XR190" "Sol" {
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Class "asteroid"
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Texture "asteroid.jpg"
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Radius 750 # "500-1000 km"
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InfoURL "http://www.cfeps.astrosci.ca/4b7/index.html"
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EllipticalOrbit {
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Epoch 2453800.5 # 2006 Mar 6 00:00UT
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Period 434.981
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SemiMajorAxis 57.409
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Eccentricity 0.111
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Inclination 46.735
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AscendingNode 252.369
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ArgOfPericenter 284.115
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MeanAnomaly 268.060
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}
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UniformRotation
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{
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Period 48.0 # guess
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}
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}
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# 50000 Quaoar (2002 LM60)
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"Quaoar" "Sol" {
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Class "asteroid"
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Texture "asteroid.jpg"
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Color [ 0.60 0.45 0.35 ] # only slight red
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BlendTexture true
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Radius 625
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Oblateness 0.12 # minimum axis ratio of 1.133
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InfoURL "http://www.gps.caltech.edu/~chad/quaoar/"
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EllipticalOrbit {
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Period 283.234
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SemiMajorAxis 43.128
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Eccentricity 0.0395
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Inclination 8.005
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AscendingNode 189.081
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ArgOfPericenter 163.885
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MeanAnomaly 258.858
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}
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Albedo 0.12
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UniformRotation
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{
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Period 17.6788 # for a double-peaked light curve
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}
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}
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# 28978 Ixion (2001 KX76)
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"Ixion" "Sol" {
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Class "asteroid"
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Texture "asteroid.jpg"
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Color [ 0.65 0.45 0.35 ] # "reddish"
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BlendTexture true
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Radius 600
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InfoURL "http://www.noao.edu/outreach/press/pr01/pr0110.html"
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EllipticalOrbit {
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Epoch 2452400.5 # 2002 May 6 00:00UT
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Period 246.50564
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SemiMajorAxis 39.3138672
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Eccentricity 0.2447032
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Inclination 19.68326
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AscendingNode 71.0155
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ArgOfPericenter 300.9234
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MeanAnomaly 259.585
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}
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Albedo 0.04
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UniformRotation
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{
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Period 30.0
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}
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}
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# 20000 Varuna (2000 WR106)
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"Varuna" "Sol" {
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Class "asteroid"
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Texture "asteroid.jpg"
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Color [ 0.65 0.45 0.35 ] # "reddish"
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BlendTexture true
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Radius 450
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Oblateness 0.333 # axis ratio 1.5:1
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InfoURL "http://www.aas.org/publications/baas/v34n3/dps2002/9.htm"
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EllipticalOrbit {
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Epoch 2452400.5 # 2002 May 6 00:00UT
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Period 284.83446
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SemiMajorAxis 43.290196
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Eccentricity 0.053794
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Inclination 17.12557
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AscendingNode 97.2843
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ArgOfPericenter 275.5744
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MeanAnomaly 82.67171
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}
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Albedo 0.07
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UniformRotation
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{
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Period 6.3442 # for a double-peaked light curve
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}
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}
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# 55565 (2002 AW197)
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"2002 AW197" "Sol" {
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Class "asteroid"
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Texture "asteroid.jpg"
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Color [ 0.65 0.45 0.35 ]
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BlendTexture true
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Radius 450
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InfoURL "http://www.aas.org/publications/baas/v34n3/dps2002/301.htm"
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EllipticalOrbit {
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Period 323.976
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SemiMajorAxis 47.171
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Eccentricity 0.1257
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Inclination 24.370
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AscendingNode 297.463
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ArgOfPericenter 296.073
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MeanAnomaly 272.766
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}
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Albedo 0.10
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UniformRotation
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{
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Period 48.0 # guess
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}
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}
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# Inner Oort cloud
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# 90377 Sedna (2003 VB12)
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"Sedna" "Sol" {
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Class "asteroid"
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Texture "asteroid.jpg"
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Color [ 0.75 0.45 0.35 ] # almost as red as Mars
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BlendTexture true
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Radius 850
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InfoURL "http://www.gps.caltech.edu/~mbrown/sedna/"
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EllipticalOrbit {
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Epoch 2453200.5 # 2004 Jul 14 00:00UT
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Period 12258.809
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SemiMajorAxis 531.658
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Eccentricity 0.8574
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Inclination 11.930
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AscendingNode 144.493
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ArgOfPericenter 311.827
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MeanAnomaly 357.881
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}
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Albedo 0.05
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UniformRotation
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{
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Period 10 # (much shorter than previously thought)
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}
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}
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