| Mars Statistics | |
|---|---|
| Mass (kg) | 6.421e+23 |
| Mass (Earth = 1) | 1.0745e-01 |
| Equatorial radius (km) | 3,397.2 |
| Equatorial radius (Earth = 1) | 5.3264e-01 |
| Mean density (gm/cm^3) | 3.94 |
| Mean distance from the Sun (km) | 227,940,000 |
| Mean distance from the Sun (Earth = 1) | 1.5237 |
| Rotational period (hours) | 24.6229 |
| Rotational period (days) | 1.025957 |
| Orbital period (days) | 686.98 |
| Mean orbital velocity (km/sec) | 24.13 |
| Orbital eccentricity | 0.0934 |
| Tilt of axis (degrees) | 25.19 |
| Orbital inclination (degrees) | 1.850 |
| Equatorial surface gravity (m/sec^2) | 3.72 |
| Equatorial escape velocity (km/sec) | 5.02 |
| Visual geometric albedo | 0.15 |
| Magnitude (Vo) | -2.01 |
| Minimum surface temperature | -140°C |
| Mean surface temperature | -63°C |
| Maximum surface temperature | 20°C |
| Atmospheric pressure (bars) | 0.007 |
| Atmospheric composition
|
95.32% 2.7% 1.6% 0.13% 0.07% 0.03% 0.00025% 0.00003% 0.000008% 0.000003% |
Mars Moon Summary
The following table summarizes the radius, mass, distance from the planet center, discoverer and the date of discovery of each of the moons of Mars:
| Moon | # | Radius (km) |
Mass (kg) |
Distance (km) |
Discoverer | Date |
|---|---|---|---|---|---|---|
| Phobos | I | 13.5x10.8x9.4 | 1.08e+16 | 9,380 | A. Hall | 1877 |
| Deimos | II | 7.5x6.1x5.5 | 1.80e+15 | 23,460 | A. Hall | 1877 |