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Planetary Systems


Solar System Data

Figure 07-03 depicts the nine planets and moons to scale.
Table 07-01 below is a fact sheet about these planets and other planetary objects in ascending distance from the Sun, where
Me = Mass of the Earth = 6x1027 gm.
De = Diameter of the Earth = 1.3x109 cm.
Distance from Sun to Earth = 1 AU = 1.5x1013 cm.
Msun = 2x1033 gm.

Figure 07-03 Planets
[view large image]


Object Mass (Me) Size (De) Distance (AU) Rotation (Day) Revolution (Year) Satellite (#) Surface Temp. (oC) Density (H2O) Atmospheric Composition
Sun 3x105 100 0 25.38     +5500 1.4 H2 91%, He 9%
Mercury 0.06 0.38 0.39 58 0.24 0 +350(day),
-170(night)
5.4 Varies ~ O2 42%,
N2 29%, H2 22%
Venus 0.95 0.95 0.72 243 0.62 0 +475 5.3 CO2 96%, N24%
Earth 1.00 1.00 1.00 1.00 1.00 1 +22 5.5 N2 78%, O2 21%
Moon 0.012 0.27 1.00 27.32 1.00   +127 (day)
-173 (night)
3.3 He, Ne, H2, Ar
Mars 0.11 0.53 1.52 1.00 1.88 2 -23 3.9 CO2 95%,N2 3%
Asteroid < 10-4 < .07 ~ 2.7 < 17 1 - 50     2.7  
Jupiter 318 11.2 5.20 0.4 11.86 16 -123 1.3 H2 90%, He 10%
Saturn 95 9.4 9.54 0.4 29.46 >18 -180 0.7 H2 97%, He 3%
Titan 0.022 0.4 9.54 15.95 29.46   -178 1.88 N2 95%, CH4 5%
Uranus 15 3.9 19.2 0.7 84.0 >16 -218 1.3 H2 83%, He 15%
Neptune 17 3.8 30.1 0.7 164.8 8 -228 1.6 H2 79%, He 18%
Pluto 0.002 0.2 39.5 6.4 248 1 -230 2.1 N2 99.97%, CH4
UB313§ 0.0025 ~ 0.23 ~ 97       ~ -248    
Comet ~ 10-12 ~ 10-4 30 - 5x104   3 - 4x104     0.25  

Table 07-01 Solar System Data

See APOD video on the size of the planets in Solar system and beyond.

§Discovered in 2006, not named nor recognized as a planet by the International Astronomical Union until 14 September 2006, when it has finally received its official name - Eris, and together with Pluto is now classified as dwarf planet.

See more Solar data from "Hyper Physics".

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