1. Physical Properties of the Planets

2. PlanetDiameter (km)Rank in Size Mercury4,8788 Venus12,1046 Earth12,7565 Mars6,7947 Jupiter142,7961 Saturn120,6602 Uranus51,1183 Neptune49,5284

3. PlanetDistance from the sun (AU) Mercury0.387 Venus0.723 Earth1.000 Mars1.524 Jupiter5.203 Saturn9.529 Uranus19.191 Neptune30.061

4. PlanetDensity (g/cm 3 ) Rank in Density Mercury5.422 Venus5.243 Earth5.501 Mars3.944 Jupiter1.316 Saturn0.78 Uranus1.307 Neptune1.665

5. PlanetLength of DayRank in Length of Day Mercury59 days2 Venus243 days1 Earth24 h4 Mars24.6 h3 Jupiter10 h8 Saturn10.2 h7 Uranus17.9 h6 Neptune19.2 h5

6. PlanetOrbital Velocity (km/s) Mercury47.89 Venus35.03 Earth29.79 Mars24.13 Jupiter13.06 Saturn9.64 Uranus6.81 Neptune5.43

7. PlanetNo. of Moons Mercury 0 Venus 0 Earth 1 Mars 2 Jupiter 63 (23 other moons) Saturn 61 (30 other moons) Uranus 27 (6 unnamed moons) Neptune 13 (5 unnamed moons)

8. PlanetKnown RingsRank in No. of Rings Mercury0- Venus0- Earth0- Mars0- Jupiter14 SaturnThousands1 Uranus112 Neptune43