| Quick Facts About Phobos |
Year Discovered : 1877 Discoverer : A. Hall Distance from planet : 9,270 km (5760.1 miles) Diameter : 28 by 20 km (12 by 8 miles) Orbital Period : .319 days |
(NASA) |
| Quick Facts about Deimos |
|
Year Discovered : 1877 Discoverer : A. Hall Distance from planet : 23,460 km (14577.4 miles) Diameter : 8 km (5 miles) Orbital Period
: 1.263 days |
(NASA) |
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