Moon M1 Phobos
Orbital characteristics
Epoch 1-Jan-1950 (2433282.5 JD) | |
Apoapsis | 0.0001 AU |
9517.6 km | |
Periapsis | 0.0001 AU |
9234.4 km | |
Semi-major axis | 0.0001 AU |
9376.0 km | |
Eccentricity | 0.0151000 |
Inclination | 1.0750 ° |
Longitude of asc. node | 207.78 ° |
Argument of periapsis | 150.06 ° |
Orbital period | 0.31890 days |
0.001 years | |
Avg. orbital speed | 2.138 km/s |
Physical characteristics
Mean diameter | 22.200 km |
Mass | 1.066×1016 kg |
Avg. density | 1.861 g/cm3 |
Equatorial surface gravity | 0.006 m/s2 |
0.001 g | |
Escape velocity | 0.011 km/s |
Rotation period (sidereal) | 7.6538 hours |
Albedo | 0.071 |
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Links
Shape model data sources
- Small Body Optical Shape Models link
- Gaskell, R.W., Gaskell Phobos Shape Model V1.0. VO1-SA-VISA/VISB-5-PHOBOSSHAPE-V1.0. NASA Planetary Data System, 2011 link
- Willner, K., et al, Phobos control point network, rotation, and shape. Earth and Planetary Science Letters, Vol. 294 (3-4), 2010 link
- Oberst, J., et al, The Phobos geodetic control point network and rotation model. Planetary and Space Science 102 (2014): 45-50. link
Texture sources
Downloads
Models
Models are given in Stanford Triangle Format (PLY) and Alias Waveform Format (OBJ) - you can use MeshLab or any other tool to convert them to other formats.
- Phobos (Thomas) (PLY 596 KB) (OBJ 1.1 MB)
- Phobos (Gaskell, 50k poly) (PLY 913 KB) (OBJ 1.7 MB)
- Phobos (Gaskell, 200k poly) (PLY 3.6 MB) (OBJ 6.8 MB)
- Phobos (Willner) (PLY 4.6 MB) (OBJ 9.1 MB)
- Phobos (Oberst) (PLY 5.5 MB) (OBJ 10.8 MB)
Please note that the models are in planetocentric coordinate system, with Z axis passing through north pole. Actual rotational axis may differ from planetocentric poles, especially for small irregular bodies.
Surface Textures
Textures are simple cylindrical projections with prime meridian at the middle, provided at the highest resolution available.
-
Phobos (Color Shaded)
(JPEG, 1024×512px, 62 KB) -
Phobos (Grayscale)
(JPEG, 14400×7200px, 21.7 MB)