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- # Comets
- "Halley" "Sol"
- {
- Class "comet"
- Mesh "halley.cmod"
- Texture "asteroid.jpg"
- Radius 7.6 # maximum semi-axis
- MeshCenter [ -0.338 1.303 0.230 ]
-
- EllipticalOrbit
- {
- Epoch 2449400.5 #1994 Feb 17 00:00UT
- Period 75.31589
- SemiMajorAxis 17.834144
- Eccentricity 0.967143
- Inclination 162.262690
- AscendingNode 58.420081
- ArgOfPericenter 111.332485
- MeanAnomaly 38.384264
- }
-
- # chaotic rotation, imperfectly defined:
- # this version from "The New Solar System", 4th Edition; Eds.
- # JK Beatty, CC Petersen, A Chaikin
-
- RotationPeriod 170 # 7.1 day axial rotation period
- Obliquity 66
- PrecessionRate 97 # 3.7 day precession period
-
- Albedo 0.04
- }
-
- "Borrelly" "Sol"
- {
- Class "comet"
- Mesh "borrelly.cms"
- Texture "asteroid.jpg"
- Radius 2.2
-
- InfoURL "http://www.solarviews.com/eng/borrelly.htm"
-
- EllipticalOrbit
- {
- Epoch 2452174.5 # 2001 Sep 22 00:00UT
- Period 6.86302
- SemiMajorAxis 3.611363
- Eccentricity 0.623908
- Inclination 30.324612
- AscendingNode 75.424869
- ArgOfPericenter 353.375385
- MeanAnomaly 358.956091
- }
-
- RotationPeriod 25
- Obliquity 90
- EquatorAscendingNode 315
-
- Albedo 0.04
- }
-
- "Ikeya-Zhang" "Sol"
- {
- Class "comet"
- Texture "asteroid.jpg"
- Mesh "roughsphere.cms"
-
- EllipticalOrbit
- {
- Epoch 2452352.47847 # 2002 Mar 18 23:29UT
- Period 367.181906
- SemiMajorAxis 51.276792
- Eccentricity 0.990111
- Inclination 28.1206
- AscendingNode 93.3718
- ArgOfPericenter 34.6666
- MeanAnomaly 0
- }
-
- # These are all made up (copied from Halley)
- Radius 7.5
- RotationPeriod 170
-
- Albedo 0.04
- }
-