Astronomy Planets - Mars - Phobos
Bulk Parameters
Orbital Parameters
Bulk Parameters |
Mass |
10.8 × 1015 kg |
Major Axis Radius |
13 km |
Minor Axis Radius |
9 km |
Mean Density |
1 900 kg m-3 |
Geometric Albedo |
0.06 |
Visual Magnitude |
+11.8 |
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Orbital Parameters |
Mean Distance from Mars |
9 377 km |
Sidereal Orbit Period |
0.318 91 days |
Orbital Inclination |
1.08 ° |
Orbital Eccentricity |
0.0151 |
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