Parameters | Phobos | Deimos | Ref. |
---|---|---|---|
Mass [kg]a | 1.0626 ± 0.0006 × 1016 | 1.51 ± 0.04 × 1015 | Jacobson (2010) |
Size [km]b | 13.3 × 11.1 × 9.1 | 7.5 × 6.1 × 5.2 | Thomas (1989) |
Volume [km3] | 5621 ± 154 | 997 ± 49 | Thomas (1989) |
Mean density [g/cm3] | 1.89 ± 0.05 | 1.51 ± 0.07 | Mass/Vol |
Semi-major axis [Mars radius] | 2.76 | 6.92 | JPL Solar System Dynamics, https://ssd.jpl.nasa.gov/ |
Eccentricity | 0.0151 | 0.00033 | JPL Solar System Dynamics, https://ssd.jpl.nasa.gov/ |
Inclination [°]c | 1.093 | 1.791 | JPL Solar System Dynamics, https://ssd.jpl.nasa.gov/ |
Geometric albedo | 0.07 ± 0.012 | 0.068 ± 0.007 |