Phobos () is the innermost and larger of the two natural satellites of Mars, the other being Deimos. The two moons were discovered in 1877 by American astronomer Asaph Hall. Phobos is named after the Greek god of fear and panic, who is the twin brother of Deimos and son of Ares (Mars). Phobos is a small, irregularly shaped object with a mean radius of 11 km (7 mi). It orbits 6,000 km (3,700 mi) from the Martian surface, closer to its primary body than any other known natural satellite to a planet.
Facts
Discovery Year Connections
Associated With
Roche Limit, Concepts Phobos is expected to be torn apart when it crosses Mars Roche limit
Orbits
Source Wikipedia (space and spaceflight articles)
Additional Source Wikipedia: Phobos (moon)Phobos (moon), lead section (orbital distance)
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1. Wikipedia: Phobos (moon)
Phobos (moon), lead section
the innermost and larger of the two natural satellites of Mars
- In Category: Celestial Objects, Phobos (moon), Wikipedia summary
Orbits: Mars, Phobos (moon), lead section (orbital distance)
It orbits 6,000 km (3,700 mi) from the Martian surface, closer to its primary body than any other known natural satellite to a planet.
In Group: Moons of Earth and Mars, Lead sentence
Phobos () is the innermost and larger of the two natural satellites of Mars, the other being Deimos.
View the SourceWikipedia (space and spaceflight articles)
Wikimedia FoundationPhobos (moon), infobox (Discovered)
18 August 1877
Entity description, phobos catalogue classification
Phobos is the innermost and larger of the two natural satellites of Mars, the other being Deimos, discovered in 1877.
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