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| Data | Mercury | Venus | Earth | Mars |
|---|---|---|---|---|
| Mass (1024kg) | 0.330 | 4.87 | 5.97 | 0.642 |
| Diameter (km) | 4879 | 12,104 | 12,756 | 6792 |
| Density (kg*m3) | 5429 | 5243 | 5514 | 3934 |
| Gravity (m/s2) | 3.7 | 8.9 | 9.8 | 3.7 |
| Length of day (hours) | 4222.6 | 2802.0 | 24.0 | 24.7 |
| Distance from Sun (106km) | 57.9 | 108.2 | 149.6 | 228.0 |
| Mean Temperature (C) | 167 | 464 | 15 | -65 |