Matt Cram
Planetary Fact Sheet
This information is presented for the benefit of students doing the solar system poster design. Also, it is just cool. All of the information is from the NASA website and there is much more good stuff there.
Ratio to Earth Values
| Mercury | Venus | Earth | Moon | Mars | Jupiter | Saturn | Uranus | Neptune | Pluto | |
|---|---|---|---|---|---|---|---|---|---|---|
| Mass | 0.0553 | 0.815 | 1 | 0.0123 | 0.107 | 317.8 | 95.2 | 14.5 | 17.1 | 0.0025 |
| Diameter | 0.383 | 0.949 | 1 | 0.2724 | 0.532 | 11.21 | 9.45 | 4.01 | 3.88 | 0.186 |
| Density | 0.984 | 0.951 | 1 | 0.605 | 0.713 | 0.240 | 0.125 | 0.230 | 0.297 | 0.380 |
| Gravity | 0.378 | 0.907 | 1 | 0.166 | 0.377 | 2.36 | 0.916 | 0.889 | 1.12 | 0.071 |
| Escape Velocity | 0.384 | 0.926 | 1 | 0.213 | 0.450 | 5.32 | 3.17 | 1.90 | 2.10 | 0.116 |
| Rotation Period | 58.8 | -244 | 1 | 27.4 | 1.03 | 0.415 | 0.445 | -0.720 | 0.673 | 6.41 |
| Length of Day | 175.9 | 116.8 | 1 | 29.5 | 1.03 | 0.414 | 0.444 | 0.718 | 0.671 | 6.39 |
| Distance from Sun | 0.387 | 0.723 | 1 | 0.00257* | 1.52 | 5.20 | 9.58 | 19.20 | 30.05 | 39.48 |
| Perihelion | 0.313 | 0.731 | 1 | 0.00247* | 1.41 | 5.03 | 9.20 | 18.64 | 30.22 | 30.16 |
| Aphelion | 0.459 | 0.716 | 1 | 0.00267* | 1.64 | 5.37 | 9.96 | 19.75 | 29.89 | 48.49 |
| Orbital Period | 0.241 | 0.615 | 1 | 0.0748* | 1.88 | 11.9 | 29.4 | 83.7 | 163.7 | 247.9 |
| Orbital Velocity | 1.59 | 1.18 | 1 | 0.0343* | 0.808 | 0.439 | 0.325 | 0.228 | 0.182 | 0.157 |
| Orbital Eccentricity | 12.3 | 0.401 | 1 | 3.29 | 5.60 | 2.93 | 3.38 | 2.74 | 0.677 | 14.6 |
| Obliquity to Orbit | 0.001 | 0.113* | 1 | 0.285 | 1.07 | 0.134 | 1.14 | 4.17* | 1.21 | 2.45* |
| Surface Pressure | 0 | 92 | 1 | 0 | 0.01 | Unknown* | Unknown* | Unknown* | Unknown* | 0.00001 |
| Number of Moons | 0 | 0 | 1 | 0 | 2 | 79 | 82 | 27 | 14 | 5 |
| Ring System? | No | No | No | No | No | Yes | Yes | Yes | Yes | No |
| Global Magnetic Field? | Yes | No | Yes | No | No | Yes | Yes | Yes | Yes | Unknown |
U.S. Units
| Mercury | Venus | Earth | Moon | Mars | Jupiter | Saturn | Uranus | Neptune | Pluto | |
|---|---|---|---|---|---|---|---|---|---|---|
| Mass (1021tons) | 0.364 | 5.37 | 6.58 | 0.081 | 0.708 | 2093 | 627 | 95.7 | 113 | 0.0161 |
| Diameter (miles) | 3032 | 7521 | 7926 | 2159 | 4221 | 88,846 | 74,897 | 31,763 | 30,775 | 1464 |
| Density (lbs/ft3) | 339 | 327 | 344 | 209 | 246 | 83 | 43 | 79 | 102 | 131 |
| Gravity (ft/s2) | 12.1 | 29.1 | 32.1 | 5.3 | 12.1 | 75.9 | 29.4 | 28.5 | 36.0 | 2.3 |
| Escape Velocity (miles/s) | 2.7 | 6.4 | 7.0 | 1.5 | 3.1 | 37.0 | 22.1 | 13.2 | 14.6 | 0.8 |
| Rotation Period (hours) | 1407.6 | -5832.5 | 23.9 | 655.7 | 24.6 | 9.9 | 10.7 | -17.2 | 16.1 | -153.3 |
| Length of Day (hours) | 4222.6 | 2802.0 | 24.0 | 708.7 | 24.7 | 9.9 | 10.7 | 17.2 | 16.1 | 153.3 |
| Distance from Sun (106 miles) | 36.0 | 67.2 | 93.0 | 0.239* | 141.6 | 483.8 | 890.8 | 1784.8 | 2793.1 | 3670.0 |
| Perihelion (106 miles) | 28.6 | 66.8 | 91.4 | 0.226* | 128.4 | 460.1 | 840.4 | 1703.4 | 2761.6 | 2756.9 |
| Aphelion (106 miles) | 43.4 | 67.7 | 94.5 | 0.252* | 154.9 | 507.4 | 941.1 | 1866.4 | 2824.5 | 4583.2 |
| Orbital Period (days) | 88.0 | 224.7 | 365.2 | 27.3* | 687.0 | 4331 | 10,747 | 30,589 | 59,800 | 90,560 |
| Orbital Velocity (miles/s) | 29.4 | 21.8 | 18.5 | 0.64* | 15.0 | 8.1 | 6.0 | 4.2 | 3.4 | 2.9 |
| Orbital Inclination (degrees) | 7.0 | 3.4 | 0.0 | 5.1 | 1.9 | 1.3 | 2.5 | 0.8 | 1.8 | 17.2 |
| Orbital Eccentricity | 0.205 | 0.007 | 0.017 | 0.055 | 0.094 | 0.049 | 0.057 | 0.046 | 0.011 | 0.244 |
| Obliquity to Orbit (degrees) | 0.034 | 177.4 | 23.4 | 6.7 | 25.2 | 3.1 | 26.7 | 97.8 | 28.3 | 122.5 |
| Mean Temperature (F) | 333 | 867 | 59 | -4 | -85 | -166 | -220 | -320 | -330 | -375 |
| Surface Pressure (atmospheres) | 0 | 91 | 1 | 0 | 0.01 | Unknown* | Unknown* | Unknown* | Unknown* | 0.00001 |
| Number of Moons | 0 | 0 | 1 | 0 | 2 | 79 | 82 | 27 | 14 | 5 |
| Ring System? | No | No | No | No | No | Yes | Yes | Yes | Yes | No |
| Global Magnetic Field? | Yes | No | Yes | No | No | Yes | Yes | Yes | Yes | Unknown |