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Mars' natural satellites
Name
Diameter
(km)
Mass (kg)
Mean orbital
radius
Orbital period (h)
Average moonrise period
Phobos
22,2 km
(27×21,6×18,8)
1,08×10
16
9377 km
7,66
11,12 hours
Deimos
12,6 km
(10×12×16)
2×10
15
23,460 km
30,35
5,44 days
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MarsWatch 2005
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Copyright 2006 © L. Ekblom