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![](../../../../images/furniture/menusep.gif) Planets Mercury Venus Earth Mars Phobos Deimos Jupiter Saturn Uranus Neptune Pluto
![](../../../../images/furniture/menusep.gif) Asteroids
![](../../../../images/furniture/menusep.gif) Comets
![](../../../../images/furniture/menusep.gif) Constellations
![](../../../../images/furniture/menusep.gif) Sunrise and Sunset Times
![](../../../../images/furniture/menusep.gif) Moon Phases
![](../../../../images/furniture/menusep.gif) SI Units
![](../../../../images/furniture/menusep.gif) Symbols
![](../../../../images/furniture/menusep.gif)
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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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