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A.20 Planetary Data
The Sun and Its Planets
Semi-Major Orbit Orbit Equator Rotate Mean Equator
Distance Period Incl Radius Period Oppo Tilt
Object (1000km) (days) (Deg) Eccen (km) (days) Magn (Deg)
------- -------- -------- ----- ----- ------ ------ ----- -----
Sun: 696 25.6 7.2 * 7.2
Mercury 57910 87.969 7.00* 0.206 2439 58.65 -1.9 2.
Venus 108200 224.701 3.39* 0.007 6052 -243.16 -4.4 178.
Earth 149600 365.256 0.00* 0.017 6378 0.99 23.45
Mars 227940 686.980 1.85* 0.093 3397 1.03 -2.0 23.98
Ceres 413400 1681.25 10.6 * 0.077 470 0.38 7.5
Jupiter 778330 4332.59 1.31* 0.048 71492 0.41 -2.7 3.07
Saturn 1429400 10759.20 2.49* 0.056 60268 0.45 0.7 26.73
Uranus 2870990 30684.9 0.77* 0.047 25559 -0.72 5.5 97.92
Neptune 4504300 60190.3 1.77* 0.009 24764 0.67 7.8 28.80
Pluto 5913520 90465. 17.15* 0.248 1160 -6.39 15.1 122.50
The Earth and Its Moon
Semi-Major Orbit Orbit Equator Rotate Mean Equator
Distance Period Incl Radius Period Oppo Tilt
Object (1000km) (days) (Deg) Eccen (km) (days) Magn (Deg)
------- -------- -------- ----- ----- ------ ------ ----- -----
Earth: 6 0.99 23.45* 23.45
Moon 384 27.321 5.11* 0.055 1738 Synchro -12.7 1.54
Mars and Its Moons
Semi-Major Orbit Orbit Equator Rotate Mean Radii
Distance Period Incl Radius Period Oppo Dimensions
Object (1000km) (days) (Deg) Eccen (km) (days) Magn (km)
------- -------- -------- ----- ----- ------ ------ ----- ----------
Equator 3 1.03 0
Phobos 9 0.319 1.00 0.01 11 Synchro 11.3 13x 11x 9
Deimos 23 1.262 1.80 0.00 6 Synchro 12.3 7x 6x 5
Jupiter and Its Moons
Semi-Major Orbit Orbit Equator Rotate Mean Radii
Distance Period Incl Radius Period Oppo Dimensions
Object (1000km) (days) (Deg) Eccen (km) (days) Magn (km)
------- -------- -------- ----- ----- ------ ------ ----- ----------
Equator 71 0.41 0
Metis 128 0.290 0. 0. 20 ? 17.5
Adrastea 129 0.298 0. 0. 10 ? 18.7 13x 10x 8
Amalthea 181 0.498 0.40 0.003 94 Synchro 14.1 131x 83x 72
Thebe 222 0.675 0.80 0.013 50 Synchro 16.0 55x 45
Io 422 1.769 0.04 0. 1815 Synchro 5.0
Europa 671 3.551 0.47 0.009 1569 Synchro 5.3
Ganymede 1070 7.155 0.19 0.002 2631 Synchro 4.6
Callisto 1883 16.689 0.28 0.007 2400 Synchro 5.6
Leda 11094 238.72 27. 0.148 8 ? 20.2
Himalia 11480 250.57 28. 0.168 93 0.4 15.0
Lysithea 11720 259.22 29. 0.107 18 ? 18.2
Elara 11737 259.65 28. 0.207 38 0.5 16.6
Ananke 21200 -631. 147. 0.17 15 ? 18.9
Carme 22600 -692. 163. 0.21 20 ? 17.9
Pasiphae 23500 -735. 147. 0.38 25 ? 16.9
Sinope 23700 -758. 153. 0.28 18 ? 18.0
Saturn and Its Moons
Semi-Major Orbit Orbit Equator Rotate Mean Radii
Distance Period Incl Radius Period Oppo Dimensions
Object (1000km) (days) (Deg) Eccen (km) (days) Magn (km)
------- -------- -------- ----- ----- ------ ------ ----- ----------
Equator 60 0.45 0
Pan 134 0.57 0. 0. 10 ? ?
Atlas 138 0.602 0. 0.002 15 ? 18.0 18x 17x 13
Prometheus 139 0.613 0. 0.004 46 ? 15.8 72x 43x 32
Pandora 142 0.629 0. 0.004 42 ? 16.5 57x 42x 31
Epimetheus 151 0.694 0.34 0.009 57 Synchro 15.7 72x 54x 49
Janus 151 0.695 0.14 0.007 89 Synchro 14.5 98x 96x 75
Mimas 186 0.942 1.53 0.020 196 Synchro 12.9
Enceladus 238 1.370 0.02 0.004 250 Synchro 11.7
Tethys 295 1.888 1.09 0.000 530 Synchro 10.2
Telesto 295 1.888 0.00 0. 15 ? 18.7 17x 14x 13
Calypso 295 1.888 0.00 0. 13 ? 19.0 17x 11x 11
Dione 377 2.737 0.02 0.002 560 Synchro 10.4
Helene 377 2.737 0.20 0.005 16 ? 18.4 18x 16x 15
Rhea 527 4.518 0.35 0.001 765 Synchro 9.7
Titan 1222 15.495 0.33 0.029 2575 Synchro 8.3
Hyperion 1481 21.277 0.43 0.104 143 Chaotic 14.2 205x130x110
Iapetus 3561 79.331 14.72 0.028 730 Synchro 11.1
Phoebe 12952 -550.48 175.30 0.163 110 0.4 16.5
Uranus and Its Moons
Semi-Major Orbit Orbit Equator Rotate Mean Radii
Distance Period Incl Radius Period Oppo Dimensions
Object (1000km) (days) (Deg) Eccen (km) (days) Magn (km)
------- -------- -------- ----- ----- ------ ------ ----- ----------
Equator 26 0.72 0
Cordelia 50 0.330 0.14 0. 13 ? 24.0
Ophelia 54 0.372 0.09 0. 16 ? 24.0
Bianca 59 0.433 0.16 0. 22 ? 23.0
Cressida 62 0.463 0.04 0. 33 ? 22.0
Desdemona 63 0.475 0.16 0. 29 ? 22.0
Juliet 64 0.493 0.06 0. 42 ? 22.0
Portia 66 0.513 0.09 0. 55 ? 21.0
Rosalind 70 0.558 0.28 0. 27 ? 22.0
Belinda 75 0.622 0.03 0. 34 ? 22.0
Puck 86 0.762 0.31 0. 77 ? 20.0
Miranda 130 1.414 4.22 0.027 236 Synchro 16.5 240x234x233
Ariel 191 2.520 0.03 0.003 579 Synchro 14.4 581x578x578
Umbriel 266 4.144 0.04 0.004 585 Synchro 15.3
Titania 436 8.706 0.01 0.002 789 Synchro 14.0
Oberon 583 13.463 0.01 0.001 761 Synchro 14.2
Neptune and Its Moons
Semi-Major Orbit Orbit Equator Rotate Mean Radii
Distance Period Incl Radius Period Oppo Dimensions
Object (1000km) (days) (Deg) Eccen (km) (days) Magn (km)
------- -------- -------- ----- ----- ------ ------ ----- ----------
Equator 25 0.67 0
Naiad 48 0.296 0. 0. 29 ? 25.0
Thalassa 50 0.312 4.5 0. 40 ? 24.0
Despina 53 0.333 0. 0. 74 ? 23.0
Galatea 62 0.429 0. 0. 79 ? 23.0
Larissa 74 0.544 0. 0. 96 ? 21.0 104x 89
Proteus 118 1.121 0. 0. 209 ? 20.0 218x208x201
Triton 355 -5.877 157. 0.000 1350 Synchro 13.6
Nereid 5513 360.15 29. 0.749 170 ? 18.7
Pluto and Its Moon
Semi-Major Orbit Orbit Equator Rotate Mean Radii
Distance Period Incl Radius Period Oppo Dimensions
Object (1000km) (days) (Deg) Eccen (km) (days) Magn (km)
------- -------- -------- ----- ----- ------ ------ ----- ----------
Pluto: 1 -6.39 122.50*
Charon 20 -6.39 98.80* 0.000 635 Synchro 16.8
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