# Data for our solar system. # Revisions by Grant Hutchison, February 2003 # (Incorporates some comet and asteroid revisions by JackHiggins) "Mercury" "Sol" { Texture "mercury.jpg" BumpMap "mercurybump.jpg" BumpHeight 2.5 Radius 2440 CustomOrbit "vsop87-mercury" EllipticalOrbit { Period 0.2408 SemiMajorAxis 0.3871 Eccentricity 0.2056 Inclination 7.0049 AscendingNode 48.33167 LongOfPericenter 77.456 MeanLongitude 252.251 } RotationPeriod 1407.509405 Obliquity 7.01 EquatorAscendingNode 48.42 RotationOffset 291.20 Albedo 0.06 } "Venus" "Sol" { Texture "venussurface.jpg" #added Venus surface texture # BumpMap "venusbump.jpg" HazeColor [ 0.5 0.35 0.2 ] HazeDensity 0.35 Radius 6052 Atmosphere { Height 60 Lower [ 0.8 0.8 0.5 ] Upper [ 0.6 0.6 0.6 ] Sky [ 0.8 0.8 0.5 ] CloudMap "venus.jpg" # CloudHeight 50 #Venus clouds using revised original Venus texture CloudSpeed 90 # } CustomOrbit "vsop87-venus" EllipticalOrbit { Period 0.6152 SemiMajorAxis 0.7233 Eccentricity 0.0068 Inclination 3.3947 AscendingNode 76.681 LongOfPericenter 131.533 MeanLongitude 181.979 } RotationPeriod 5832.479839 Obliquity 178.78 EquatorAscendingNode 300.22 RotationOffset 137.45 Albedo 0.77 } "Earth" "Sol" { Texture "earth.png" # Texture "earth8k.dds" NightTexture "earthnight.jpg" # SpecularTexture "earthspec2k.jpg" Color [ 0.85 0.85 1.0 ] SpecularColor [ 0.5 0.5 0.55 ] SpecularPower 25.0 HazeColor [ 1 1 1 ] HazeDensity 0.3 Radius 6378 # Oblateness 0.003 # BumpMap "earthbump4k.jpg" # BumpHeight 4.5 Atmosphere { Height 60 Lower [ 0.5 0.5 0.65 ] Upper [ 0.3 0.3 0.6 ] Sky [ 0.3 0.6 0.9 ] CloudHeight 7 CloudSpeed 65 CloudMap "earth-clouds.png" } CustomOrbit "vsop87-earth" EllipticalOrbit { Period 1.0000 SemiMajorAxis 1.0000 Eccentricity 0.0167 Inclination 0.0001 AscendingNode 348.739 LongOfPericenter 102.947 MeanLongitude 100.464 } RotationPeriod 23.9344694 # 23.93419 RotationOffset 280.5 # offset at default epoch J2000 Obliquity -23.45 Albedo 0.30 } "Moon" "Sol/Earth" { Texture "moon.jpg" # Texture "clem-moon-4k.jpg" # Texture "moon4k.dds" BumpMap "moonbump1k.jpg" BumpHeight 0.7 Radius 1737.53 Oblateness 0.002 CustomOrbit "moon" EllipticalOrbit { Period 27.321661 SemiMajorAxis 384400 Eccentricity 0.054900 Inclination 5.15 } RotationOffset 43 Albedo 0.12 } "Mir" "Sol/Earth" { Class "spacecraft" Mesh "mir.3ds" Radius 0.0165 # Mir is 33 meters long Beginning 2446482.0 # Launched 20 Feb 1986 Ending 2451989.77083 # Reentered 21 Mar 2001 # Assuming these elements to be constant isn't accurate . . . # Celestia really needs to support better orbit models. EllipticalOrbit { Period 0.06415338 SemiMajorAxis 6769 Eccentricity 0.0000831 Inclination 51.6461 AscendingNode 83.8459 ArgOfPericenter 296.4901 MeanAnomaly 63.6005 } Obliquity 51.6461 RotationOffset 180 EquatorAscendingNode 83.8459 Albedo 0.10 } "ISS" "Sol/Earth" { Class "spacecraft" Mesh "iss.3ds" Radius 0.040 Beginning 2451138 # Zarya module launched 20 Nov 1998 # Ending ???? EllipticalOrbit { Period 0.064176392 SemiMajorAxis 6767 Eccentricity 0.0016886 Inclination 51.5684 AscendingNode 343.1518 ArgOfPericenter 346.2476 MeanAnomaly 13.8216 Epoch 2452028.18381755 } Obliquity 51.5684 # RotationOffset 90 #orientation corrections by Matt McIrvin EquatorAscendingNode 343.1518 # Albedo 0.10 } "Hubble" "Sol/Earth" { Class "spacecraft" Mesh "hubble.3ds" Radius 0.007 # 14 meters across Beginning 2448007 # Deployed 25 April 1990 # Ending 2010? EllipticalOrbit { Period 0.06903 SemiMajorAxis 6767 Eccentricity 0.0012082 Inclination 28.4675 AscendingNode 51.0100 ArgOfPericenter 27.0378 MeanAnomaly 333.0836 Epoch 2452028.18381755 } Albedo 0.10 } "Mars" "Sol" { Texture "mars.jpg" # Texture "mars8k.dds" BumpMap "marsbump1k.jpg" BumpHeight 2.5 Color [ 1 0.75 0.7 ] HazeColor [ 1 1 1 ] HazeDensity 0.45 Radius 3394 # Oblateness 0.006 Atmosphere { Height 30 Lower [ 0.8 0.6 0.6 ] Upper [ 0.7 0.3 0.3 ] Sky [ 0.83 0.75 0.65 ] } CustomOrbit "vsop87-mars" EllipticalOrbit { Period 1.8809 SemiMajorAxis 1.5237 Eccentricity 0.0934 Inclination 1.8506 AscendingNode 49.479 LongOfPericenter 336.041 MeanLongitude 355.453 } RotationPeriod 24.622962 Obliquity 26.72 EquatorAscendingNode 82.91 RotationOffset 136.005 Albedo 0.150 } "Phobos" "Sol/Mars" { Mesh "phobos.3ds" Texture "phobos.jpg" # revised mirrored texture should be used # BumpMap "phobosbump.jpg" # BumpHeight 5 Radius 11 EllipticalOrbit { Period 0.318910 SemiMajorAxis 9377.2 Eccentricity 0.0151 Inclination 1.075 AscendingNode 128.694 # J2000 ArgOfPericenter 213.804 # J2000 MeanAnomaly 191.771 # J2000 } Obliquity 1.075 EquatorAscendingNode 128.694 RotationOffset 45.575 Albedo 0.07 } "Deimos" "Sol/Mars" { Mesh "deimos.3ds" Texture "deimos.jpg" #revised mirrored texture should be used Radius 6 EllipticalOrbit { Period 1.262441 SemiMajorAxis 23463.2 Eccentricity 0.00033 Inclination 1.793 AscendingNode 25.229 ArgOfPericenter 208.213 MeanAnomaly 344.128 } Obliquity 1.791 EquatorAscendingNode 25.229 RotationOffset 192.341 Albedo 0.08 } "Jupiter" "Sol" { Texture "jupiter.jpg" HazeColor [ 0.4 0.45 0.5 ] HazeDensity 0.3 Radius 71398 Oblateness 0.064 CustomOrbit "vsop87-jupiter" EllipticalOrbit { Period 11.8622 SemiMajorAxis 5.2034 Eccentricity 0.0484 Inclination 1.3053 AscendingNode 100.556 LongOfPericenter 14.7539 MeanLongitude 34.404 } RotationPeriod 9.927953 # System II (for GRS) # RotationPeriod 9.924920 # System III (radio emissions) Obliquity 2.222461 # 1.82246 # 2.22246 EquatorAscendingNode -22.203 # -1.87785 # -22.203 # RotationOffset 305.40 #System III prime meridian RotationOffset 16 #revised to correctly align GRS in jupiter.jpg Albedo 0.51 } "Amalthea" "Sol/Jupiter" { Texture "asteroid.jpg" BlendTexture true Color [ 0.5 0.12 0.16 ] Mesh "amalthea.3ds" Radius 124 EllipticalOrbit { Epoch 2452583.763194445 Period 0.49817905 SemiMajorAxis 181994.98 Eccentricity 0.0046637841 Inclination 0.39217201 AscendingNode 224.4139186 ArgOfPericenter 293.4707817 MeanAnomaly 319.3794140 } Obliquity 0.4 EquatorAscendingNode 224.41 RotationOffset 209.583 Albedo 0.06 } "Io" "Sol/Jupiter" { Texture "io.jpg" # Texture "io2k.dds" Radius 1821 CustomOrbit "io" EllipticalOrbit { Epoch 2443000.00038375 Period 1.769138 SemiMajorAxis 421600 Eccentricity 0.0041 Inclination 0.040 AscendingNode 312.981 LongOfPericenter 97.735 MeanLongitude 106.724 } RotationOffset 219 #revised value Albedo 0.61 } "Europa" "Sol/Jupiter" { Texture "europa.jpg" #revised texture with correctly aligned prime meridian should be used Radius 1565 CustomOrbit "europa" EllipticalOrbit { Epoch 2443000.00038375 Period 3.551810 SemiMajorAxis 670900 Eccentricity 0.0101 Inclination 0.470 AscendingNode 101.087 LongOfPericenter 155.512 MeanLongitude 176.377 } RotationOffset 53 #revised value Albedo 0.64 } "Ganymede" "Sol/Jupiter" { Texture "ganymede.jpg" Radius 2634 CustomOrbit "ganymede" EllipticalOrbit { Epoch 2443000.00038375 Period 7.154553 SemiMajorAxis 1070000 Eccentricity 0.0015 Inclination 0.195 AscendingNode 119.841 LongOfPericenter 188.831 MeanLongitude 121.206 } RotationOffset 60 #revised value Albedo 0.42 } "Callisto" "Sol/Jupiter" { Texture "callisto.jpg" Radius 2403 CustomOrbit "callisto" EllipticalOrbit { Epoch 2443000.00038375 Period 16.689018 SemiMajorAxis 1883000 Eccentricity 0.007 Inclination 0.281 AscendingNode 323.265 LongOfPericenter 335.933 MeanLongitude 85.091 } RotationOffset 282 #revised value Albedo 0.20 } "Saturn" "Sol" { Texture "saturn.jpg" Color [ 1.0 1.0 0.85 ] HazeColor [ 0.0 0.0 1 ] HazeDensity 0.25 Radius 60330 Oblateness 0.1076 CustomOrbit "vsop87-saturn" EllipticalOrbit { Period 29.4577 SemiMajorAxis 9.5371 Eccentricity 0.0542 Inclination 2.4845 AscendingNode 113.715 LongOfPericenter 92.432 MeanLongitude 49.944 } RotationPeriod 10.65622 # System III - magnetic field # Obliquity 28.052 # old value: 26.73 # EquatorAscendingNode 168.8112 # 169.53 Obliquity 28.049 EquatorAscendingNode 169.530 RotationOffset 358.922 #added - correct System III prime meridian Albedo 0.50 Rings { Inner 74658 Outer 140000 Texture "saturn-rings.png" # Bjorn Jonsson recommends this # color for rendering Saturn's rings. No idea if it's right, # but it looks nice Color [ 1.0 0.88 0.82 ] } } "Mimas" "Sol/Saturn" { Texture "mimas.jpg" # Texture "white.jpg" # BumpMap "mimasbump.jpg" # BumpHeight 10.0 Color [ 0.75 0.63 0.58 ] BlendTexture true Radius 199 CustomOrbit "mimas" EllipticalOrbit { Period 0.9424218 SemiMajorAxis 185520 Eccentricity 0.0202 Inclination 1.53 MeanAnomaly 23 } RotationOffset 330 #epoch J2000.0 Albedo 0.5 } "Enceladus" "Sol/Saturn" { Texture "asteroid.jpg" Radius 249 CustomOrbit "enceladus" EllipticalOrbit { Period 1.370218 SemiMajorAxis 238020 Eccentricity 0.0045 Inclination 0.02 MeanAnomaly 215 } RotationOffset 320 Albedo 0.99 } "Tethys" "Sol/Saturn" { Texture "tethys.jpg" Radius 530 CustomOrbit "tethys" EllipticalOrbit { Period 1.887802 SemiMajorAxis 294660 Eccentricity 0.0 Inclination 1.09 MeanAnomaly 98 } RotationOffset 325 Albedo 0.9 } "Dione" "Sol/Saturn" { Texture "dione.jpg" Radius 560 CustomOrbit "dione" EllipticalOrbit { Period 2.736915 SemiMajorAxis 377400 Eccentricity 0.0022 Inclination 0.02 MeanAnomaly 310 } RotationOffset 315 Albedo 0.7 } "Rhea" "Sol/Saturn" { Texture "rhea.jpg" Radius 764 CustomOrbit "rhea" EllipticalOrbit { Period 4.517500 SemiMajorAxis 527040 Eccentricity 0.0010 Inclination 0.35 MeanAnomaly 190 } RotationOffset 190 Albedo 0.7 } "Titan" "Sol/Saturn" { Texture "titan.jpg" Color [ 1.0 0.9 0.75 ] HazeColor [ 0.2 0.5 1 ] HazeDensity 1 Radius 2575 Atmosphere { Height 60 Lower [ 0.8 0.4 0.1 ] Upper [ 0.0 0.0 0.9 ] Sky [ 0.8 0.4 0.1 ] } CustomOrbit "titan" EllipticalOrbit { Period 15.945421 SemiMajorAxis 1221850 Eccentricity 0.0292 Inclination 0.33 MeanAnomaly 120 } RotationOffset 145 Albedo 0.21 } "Hyperion" "Sol/Saturn" { Mesh "hyperion.3ds" Texture "asteroid.jpg" Radius 205 CustomOrbit "hyperion" 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. Obliquity 25 RotationPeriod 336 # 13 days PrecessionRate 15.65 # 23 days Albedo 0.3 } "Iapetus" "Sol/Saturn" { Texture "iapetus.jpg" Radius 718 CustomOrbit "iapetus" EllipticalOrbit { Period 79.330183 SemiMajorAxis 3561300 Eccentricity 0.0283 Inclination 7.52 MeanAnomaly 245 } RotationOffset 230 Albedo 0.2 } "Phoebe" "Sol/Saturn" { Mesh "roughsphere.cms" Texture "asteroid.jpg" Radius 110 CustomOrbit "phoebe" EllipticalOrbit { Epoch 2447892.5 Period 548.2122790 SemiMajorAxis 12944346 Eccentricity 0.16435 Inclination 174.751 LongOfPericenter 203.958 MeanLongitude 390.742 AscendingNode 233.037 } RotationPeriod 9.6 Albedo 0.05 } "Uranus" "Sol" { Texture "uranus.jpg" Color [ 0.75 0.85 1.0 ] HazeColor [ 0.5 0.8 1.0 ] HazeDensity 0.2 Radius 26200 Oblateness 0.024 CustomOrbit "vsop87-uranus" EllipticalOrbit { Period 84.0139 SemiMajorAxis 19.1913 Eccentricity 0.0472 Inclination 0.7699 AscendingNode 74.230 LongOfPericenter 170.964 MeanLongitude 313.232 } RotationPeriod 17.24 # System III - magnetic field Obliquity 97.81 EquatorAscendingNode 167.76 RotationOffset -28.82 Albedo 0.66 Rings { Inner 41800 Outer 51149 Texture "uranus-rings.png" } } "Miranda" "Sol/Uranus" { Texture "miranda.jpg" #revised rotated texture should be used Radius 235 CustomOrbit "miranda" EllipticalOrbit { Period 1.413 SemiMajorAxis 129800 Eccentricity 0.0027 Inclination 4.22 MeanAnomaly 120 } RotationPeriod 33.92350159 # enforce sync rotation RotationOffset 330 } "Ariel" "Sol/Uranus" { Texture "ariel.jpg" #revised rotated texture should be used Radius 576 CustomOrbit "ariel" EllipticalOrbit { Period 2.520 SemiMajorAxis 191200 Eccentricity 0.0034 Inclination 0.31 MeanAnomaly 56 } RotationPeriod 60.48909292 # enforce sync rotation RotationOffset 200 } "Umbriel" "Sol/Uranus" { Texture "umbriel.jpg" #revised rotated texture should be used Radius 585 CustomOrbit "umbriel" EllipticalOrbit { Period 4.144 SemiMajorAxis 266000 Eccentricity 0.0050 Inclination 0.36 MeanAnomaly 280 } RotationPeriod 99.46022991 # enforce sync rotation RotationOffset 250 } "Titania" "Sol/Uranus" { Texture "titania.jpg" #revised rotated texture should be used Radius 789 CustomOrbit "titania" EllipticalOrbit { Period 8.706 SemiMajorAxis 435800 Eccentricity 0.0022 Inclination 0.10 MeanAnomaly 30 } RotationPeriod 208.94077099 # enforce sync rotation RotationOffset 280 } "Oberon" "Sol/Uranus" { Texture "oberon.jpg" #revised rotated texture should be used Radius 761 CustomOrbit "oberon" EllipticalOrbit { Period 13.463 SemiMajorAxis 583600 Eccentricity 0.0008 Inclination 0.10 MeanAnomaly 150 } RotationPeriod 323.117567539 # enforce sync rotation RotationOffset 350 } "Neptune" "Sol" { Texture "neptune.jpg" Color [ 0.75 0.75 1.0 ] HazeColor [ 0.6 1 0.75 ] HazeDensity 0.35 Radius 25225 Oblateness 0.027 CustomOrbit "vsop87-neptune" EllipticalOrbit { Period 164.793 SemiMajorAxis 30.0690 Eccentricity 0.0086 Inclination 1.7692 AscendingNode 131.722 LongOfPericenter 44.971 MeanLongitude 304.880 } RotationPeriod 16.11 # System III - magnetic field Obliquity 28.03 EquatorAscendingNode 49.235 RotationOffset 228.65 Albedo 0.62 } "Proteus" "Sol/Neptune" { Mesh "proteus.3ds" Texture "asteroid.jpg" Radius 218 EllipticalOrbit { Epoch 2450085.5 #revised value - 1996 Jan 03.0 (earliest Horizons data) Period 1.122315 #revised to mean value SemiMajorAxis 117600 #revised to mean value Eccentricity 0.0004 #revised to mean value Inclination 1.101 #revised value - at epoch AscendingNode 327.378 #revised value - at epoch ArgOfPericenter 277.888 #revised value - at epoch MeanAnomaly 206.367 #revised value - at epoch } Obliquity 1.1 EquatorAscendingNode 327.378 RotationOffset 281.590 Albedo 0.2 } "Triton" "Sol/Neptune" { Texture "triton.jpg" Radius 1353 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 #revised value - 1989 Aug 25.00 (Voyager encounter) Period 5.8768541 #revised to mean value SemiMajorAxis 354765.286 #revised value - at epoch Eccentricity 0.000022849 #revised value - at epoch Inclination 156.826240 #revised value - at epoch AscendingNode 147.899288 #revised value - at epoch ArgOfPericenter 293.092400 #revised value - at epoch MeanAnomaly 315.726316 #revised value - at epoch } Obliquity 23.174 EquatorAscendingNode 327.899 RotationOffset -53.161 RotationPeriod -141.0444984 #correct retrograde rotation Albedo 0.7 } "Nereid" "Sol/Neptune" { Mesh "asteroid.cms" Texture "asteroid.jpg" Radius 170 EllipticalOrbit { Epoch 2447763.5 #revised value - 1989 Aug 25.00 (Voyager encounter) Period 360.13619 #revised to mean value SemiMajorAxis 5513400 #revised to mean value Eccentricity 0.7512 #revised to mean value Inclination 28.385 #revised value - at epoch AscendingNode 190.678 #revised value - at epoch ArgOfPericenter 17.690 #revised value - at epoch MeanAnomaly 36.056 #revised value - at epoch } } "Pluto" "Sol" { Texture "pluto.jpg" BumpMap "plutobump1k.jpg" BumpHeight 2.5 Radius 1137 CustomOrbit "pluto" EllipticalOrbit { Period 248.54 SemiMajorAxis 39.48168677 Eccentricity 0.24880766 Inclination 17.14175 AscendingNode 110.30347 LongOfPericenter 224.06776 MeanLongitude 238.92881 } RotationPeriod 153.293904 Obliquity 115.604 EquatorAscendingNode 228.335 RotationOffset -39.25 Albedo 0.3 } "Charon" "Sol/Pluto" { Texture "charon.jpg" Radius 593 InfoURL "http://www.nineplanets.org/pluto.html#Charon" EllipticalOrbit { Period 6.387246 SemiMajorAxis 19636 Eccentricity 0.0076 Inclination 0.0 # AscendingNode 103.957 # ArgOfPericenter 34.3419 MeanAnomaly -39.254 } RotationOffset 140.75 Albedo 0.3 } "Galileo" "Sol" { Class "spacecraft" Mesh "galileo.3ds" Radius 0.01 InfoURL "http://galileo.jpl.nasa.gov" Beginning "1989 10 19 02:47" # Launch Ending "2003 9 21 10:44" # Crash into Jupiter SampledOrbit "galileo.xyz" EllipticalOrbit { Period 64.4068 SemiMajorAxis 4632880 Eccentricity 0.831774 Inclination 4.213 AscendingNode 59.562 ArgOfPericenter 97.224 TrueAnomaly -66.619 } RotationPeriod 1.0e9 # Essentially no rotation . . . Orientation [ 90 0 1 0 ] Albedo 0.50 } # A few main belt asteroids . . "Ceres" "Sol" { Class "asteroid" Texture "asteroid.jpg" Radius 456 EllipticalOrbit { Epoch 2452600.5 Period 4.60014 SemiMajorAxis 2.7660 Eccentricity 0.0793 Inclination 10.584 AscendingNode 80.483 ArgOfPericenter 74.043 MeanAnomaly 232.067 } Obliquity 11 # EquatorAscendingNode 29 # RotationEpoch 2449249.91125 # added rotation parameters RotationOffset -20.15 # RotationPeriod 9.075 Albedo 0.113 # added information } "Pallas" "Sol" { Class "asteroid" Texture "asteroid.jpg" Radius 260 EllipticalOrbit { Epoch 2452600.5 Period 4.61868 SemiMajorAxis 2.7733 Eccentricity 0.2300 Inclination 34.846 AscendingNode 173.166 ArgOfPericenter 310.423 MeanAnomaly 218.057 } Obliquity 102 # EquatorAscendingNode 162 # added rotation parameters RotationOffset -7.23 # RotationPeriod 7.81323264 # revised rotation figure Albedo 0.159 #added information } "Juno" "Sol" { Class "asteroid" Texture "asteroid.jpg" Radius 120 EllipticalOrbit { Epoch 2452600.5 Period 4.35540 SemiMajorAxis 2.6669 Eccentricity 0.2589 Inclination 12.972 AscendingNode 170.133 ArgOfPericenter 247.948 MeanAnomaly 119.146 } Obliquity 56 # added rotation parameters EquatorAscendingNode 196 # RotationPeriod 7.811 Albedo 0.238 # added information } "Vesta" "Sol" { Class "asteroid" Mesh "vesta.3ds" Texture "asteroid.jpg" Radius 265 EllipticalOrbit { Epoch 2452000.5 Period 3.62729 SemiMajorAxis 2.3670775 Eccentricity 0.089753 Inclination 7.1346 AscendingNode 103.9510 ArgOfPericenter 149.4585 MeanAnomaly 104.980 } Obliquity 40 # EquatorAscendingNode 91 # added rotation parameters RotationEpoch 2450124.90833 # RotationOffset 145.77 # RotationPeriod 5.342 Albedo 0.423 #Horizons } # Some of the asteroids visited by spacecraft "Gaspra" "Sol" { Class "asteroid" Mesh "gaspra.3ds" Texture "asteroid.jpg" Color [ 0.52 0.47 0.42 ] BlendTexture true Radius 9.5 EllipticalOrbit { Epoch 2448559 #1991 Oct 29: Galileo encounter Period 3.2837 #average SemiMajorAxis 2.2096348 #at epoch Eccentricity 0.1738752 #at epoch Inclination 4.0975771 #at epoch AscendingNode 253.445592 #at epoch ArgOfPericenter 129.045896 #at epoch MeanAnomaly 280.769206 #at epoch } RotationPeriod 7.042073 # EquatorAscendingNode 109.59 # Obliquity 69.28 # added rotation parameters RotationOffset 238.865 # Albedo 0.1 } "Ida" "Sol" { Class "asteroid" Mesh "ida.3ds" #use revised shape model - original is mirror-reversed Texture "asteroid.jpg" Radius 45 EllipticalOrbit { Epoch 2449228 #1993 Aug 28: Galileo encounter Period 4.8417 #average SemiMajorAxis 2.863731 #at epoch Eccentricity 0.043109 #at epoch Inclination 1.137110 #at epoch AscendingNode 324.586055 #at epoch ArgOfPericenter 113.017101 #at epoch MeanAnomaly 131.594945 #at epoch } RotationPeriod -4.633632 # EquatorAscendingNode 172.77 # added rotation parameters Obliquity 23.04 # RotationOffset 0.54 # Albedo 0.24 # added information } "Dactyl" "Sol/Ida" { #Data for Dactyl taken from: #Petit et al.: The Long-Term Dynamics of Dactyl's Orbit #(Icarus 1997: 130; 177-197) InfoURL "http://www.lpl.arizona.edu/~hurfordt/research/papers/Icarus130.pdf" Class "asteroid" Texture "asteroid.jpg" Mesh "roughsphere.cms" Radius 0.7 EllipticalOrbit { Epoch 2449228.2028 #1993 Aug 28 16:52:05 Period -0.96534 #stable 5:1 resonant orbit (Petit et al.) SemiMajorAxis 83.5 #stable 5:1 resonant orbit (Petit et al.) Eccentricity 0.13 #stable 5:1 resonant orbit (Petit et al.) LongOfPericenter 230 #stable pericenter at 90šE Ida longitude (Petit et al.) AscendingNode 90 #VERY approximate - chosen to place Dactyl north #of Ida's equator, as seen at time of Galileo encounter Inclination 8 #estimated at 7-9 degrees (Petit et al.) } RotationPeriod -23.16816 #enforce synchronous rotation RotationOffset 57 #place prime meridian facing Ida Albedo 0.2 # added information } "Eros" "Sol" { Class "asteroid" Mesh "eros5.3ds" #use revised shape model - original is mirror-reversed #Texture "asteroid.jpg" Texture "eros2k.jpg" #my shaded relief texture # Color sampled from true color photo taken by NEAR Color [ 0.52 0.47 0.42 ] BlendTexture true Radius 16.5 EllipticalOrbit { Epoch 2451171 #23 Dec 1998 - first NEAR-Shoemaker encounter Period 1.761 #average SemiMajorAxis 1.458261 #at epoch Eccentricity 0.222885 #at epoch Inclination 10.830143 #at epoch AscendingNode 304.430882 #at epoch ArgOfPericenter 178.613184 #at epoch MeanAnomaly 208.403434 #at epoch } RotationPeriod 5.270 Obliquity 78.70 # EquatorAscendingNode 107.23 # added rotation parameters RotationOffset 158.165 # Albedo 0.16 } # Radar-imaged asteroids "Toutatis" "Sol" { Class "asteroid" Mesh "toutatis.3ds" Texture "asteroid.jpg" # We'll just use the same color as Eros Color [ 0.52 0.47 0.42 ] BlendTexture true Radius 2.3 EllipticalOrbit { Period 3.976715 SemiMajorAxis 2.5100537 Eccentricity 0.6342274 Inclination 0.46959 AscendingNode 128.24788 ArgOfPericenter 274.78070 MeanAnomaly 86.28120 Epoch 2452200.5 } Obliquity 35 RotationPeriod -129.6 # 5.41 days - revised to give retrograde rotation PrecessionRate -48.98 # 7.35 day period - revised to give retrograde precession Orientation [ 90 1 0 0 ] Albedo 0.16 } "Geographos" "Sol" { Class "asteroid" Mesh "geographos.3ds" Texture "asteroid.jpg" # We'll just use the same color as Eros Color [ 0.52 0.47 0.42 ] BlendTexture true Radius 2.555 # revised radius InfoURL "http://www-personal.engin.umich.edu/~scheeres/reprints/Icarus_geographos.pdf" EllipticalOrbit { Period 1.39 SemiMajorAxis 1.2455 Eccentricity 0.3354 Inclination 13.34 AscendingNode 337.352 ArgOfPericenter 276.756 MeanAnomaly 180.595 Epoch 2450800.5 } Orientation [90 1 0 0] # correct orientation Obliquity 136 #added rotation parameters EquatorAscendingNode 145 # RotationPeriod 5.222 Albedo 0.326 # revised figure } "Kleopatra" "Sol" { Class "asteroid" Mesh "kleopatra.3ds" Texture "asteroid.jpg" # We'll just use the same color as Eros Color [ 0.52 0.47 0.42 ] BlendTexture true Radius 109 InfoURL "http://www-personal.engin.umich.edu/~scheeres/reprints/Science_kleopatra.pdf" EllipticalOrbit { Period 4.67 SemiMajorAxis 2.791 Eccentricity 0.2531 Inclination 13.138 AscendingNode 215.699 # corrected figure ArgOfPericenter 179.350 # corrected figure MeanAnomaly 225.804 # corrected figure Epoch 2450800.5 } Orientation [90 1 0 0] #correct orientation Obliquity 63 # added rotation parameters EquatorAscendingNode 162 # RotationPeriod 5.385 Albedo 0.116 # revised figure # Class M } "1998 KY26" "Sol" { Class "asteroid" Mesh "ky26.3ds" Texture "asteroid.jpg" # We'll just use the same color as Eros Color [ 0.52 0.47 0.42 ] BlendTexture true Radius 0.015 EllipticalOrbit { Period 1.3676 SemiMajorAxis 1.2320798 Eccentricity 0.20151423 Inclination 1.48127 AscendingNode 84.45490 ArgOfPericenter 209.14766 MeanAnomaly 356.6879717 Epoch 2452000.5 } Orientation [90 1 0 0] #correct orientation RotationPeriod 0.178 Albedo 0.15 } "Bacchus" "Sol" { Class "asteroid" Mesh "bacchus.3ds" Texture "asteroid.jpg" # We'll just use the same color as Eros Color [ 0.52 0.47 0.42 ] BlendTexture true Radius 0.55 #revised figure InfoURL "http://echo.jpl.nasa.gov/~ostro/bacchus/index.html" EllipticalOrbit { Period 1.119 SemiMajorAxis 1.0781035 Eccentricity 0.34951251 Inclination 9.43160 AscendingNode 33.23590 ArgOfPericenter 55.18040 MeanAnomaly 229.8627955 Epoch 2452000.5 } Orientation [90 1 0 0] #correct orientation Obliquity 116 # added rotation parameters EquatorAscendingNode 114 # RotationPeriod 14.90 Albedo 0.15 } "Golevka" "Sol" { Class "asteroid" Mesh "golevka.3ds" Texture "asteroid.jpg" # We'll just use the same color as Eros Color [ 0.52 0.47 0.42 ] BlendTexture true Radius 0.34 #revised figure InfoURL "http://www2.crl.go.jp/ka/radioastro/people/koyama/golevka.pdf" EllipticalOrbit { Period 3.995 SemiMajorAxis 2.5120500 Eccentricity 0.60117380 Inclination 2.28701 AscendingNode 212.16560 ArgOfPericenter 65.25133 MeanAnomaly 159.8983670 Epoch 2452000.5 } Orientation [90 1 0 0] #correct orientation Obliquity 135 # added rotation parameters EquatorAscendingNode 292 # RotationPeriod 6.0289 # revised figure Albedo 0.15 } "Castalia" "Sol" { Class "asteroid" Mesh "castalia.3ds" Texture "asteroid.jpg" # We'll just use the same color as Eros Color [ 0.52 0.47 0.42 ] BlendTexture true Radius 2.0 EllipticalOrbit { Period 1.096 #corrected figure SemiMajorAxis 1.0632007 Eccentricity 0.48324394 Inclination 8.88806 AscendingNode 325.71246 ArgOfPericenter 121.26355 MeanAnomaly 152.5186007 Epoch 2452000.5 } Orientation [90 1 0 0] #correct orientation Obliquity 146 # added rotation parameters EquatorAscendingNode 325 # RotationPeriod 4.095 #corrected figure Albedo 0.15 } # Comets "Halley" "Sol" { Class "comet" Mesh "borrelly.cms" #similar 2:1 proportions to Borrelly Texture "asteroid.jpg" Radius 7.5 EllipticalOrbit #revised figures by JackHiggins { Period 75.31589 SemiMajorAxis 17.834144 Eccentricity 0.967143 Inclination 162.262690 AscendingNode 58.420081 ArgOfPericenter 111.332485 MeanAnomaly 38.384264 Epoch 2449400.5 } #chaotic rotation, imperfectly defined: #this version from "The New Solar System", 4th Edition; Eds. JK Beatty, CC Petersen, A Chaikin Orientation [90 0 0 1] # rotates around long axis Obliquity 66 # added information RotationPeriod 170 # 7.1 day axial rotation period PrecessionRate 89 # 3.7 day precession period Albedo 0.04 } "Borrelly" "Sol" { Class "comet" Mesh "borrelly.cms" Texture "asteroid.jpg" Radius 2.2 #revised figure InfoURL "http://www.lpi.usra.edu/meetings/lpsc2002/pdf/1256.pdf" EllipticalOrbit #revised figures by JackHiggins { Period 6.86302 SemiMajorAxis 3.611363 Eccentricity 0.623908 Inclination 30.324612 AscendingNode 75.424869 ArgOfPericenter 353.375385 MeanAnomaly -1.043909 Epoch 2452174.5 } Obliquity 90 # EquatorAscendingNode 315 # added rotation parameters RotationPeriod 25 # Albedo 0.04 } "Ikeya-Zhang" "Sol" { Class "comet" Texture "asteroid.jpg" Mesh "roughsphere.cms" EllipticalOrbit { Period 367.181906 SemiMajorAxis 51.276792 Eccentricity 0.990111 Inclination 28.1206 AscendingNode 93.3718 ArgOfPericenter 34.6666 MeanAnomaly 0 Epoch 2452352.47847 } # These are all made up (copied from Halley) Radius 7.5 RotationPeriod 170 Albedo 0.04 } # Centaurs "Chiron" "Sol" { Class "asteroid" Texture "asteroid.jpg" Radius 144 #revised figure EllipticalOrbit #revised figures by JackHiggins { Period 50.90359 SemiMajorAxis 13.734941 Eccentricity 0.384424 Inclination 6.927771 AscendingNode 209.395188 ArgOfPericenter 339.432152 MeanAnomaly -10.016331 Epoch 2449608.5 } RotationPeriod 5.918 #revised figure by JackHiggins Albedo 0.048 #added information by JackHiggins } # Kuiper belt objects # 20000 Varuna "Varuna" "Sol" { Class "asteroid" InfoURL "http://spacewatch.lpl.arizona.edu/2000wr106.html" #InfoURL "http://www.ifa.hawaii.edu/faculty/jewitt/papers/VARUNA2/JS2002.pdf" Texture "asteroid.jpg" Radius 450 EllipticalOrbit #revised figures by JackHiggins { Period 284.83446 SemiMajorAxis 43.290196 Eccentricity 0.053794 Inclination 17.12557 AscendingNode 97.2843 ArgOfPericenter 275.5744 MeanAnomaly 82.67171 Epoch 2452400.5 } RotationPeriod 6.3442 #for a double-peaked light curve Albedo 0.4 } # 2001 KX76 "Ixion" "Sol" { Class "asteroid" Texture "asteroid.jpg" Radius 600 EllipticalOrbit #revised figures by JackHiggins { Period 246.50564 SemiMajorAxis 39.3138672 Eccentricity 0.2447032 Inclination 19.68326 AscendingNode 71.0155 ArgOfPericenter 300.9234 MeanAnomaly 259.585 Epoch 2452400.5 } Albedo 0.07 RotationPeriod 30.0 #revised figure by JackHiggins }