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physical object > natural object > celestial body > natural satellite > Phobos |
Phobos comparison table |
Subject | has surface composition | has rotation period | is part of | is a kind of | is an instance of | has radiu | has orbital period | has discovery date | has inclination | has albedo | has definition | has eccentricity | has discoverer |
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natural satellite | satellite | Body orbiting a planet. Since 1957 the term has also been applied to man-made (artificial) satellites; many astronomers make the distinction by calling natural satellites moons (and the Earth's natural satellite the Moon). | |||||||||||
Phobos | dust (from Infrared observations) | 7h39m14s | Mars | natural satellite | about 18 × 22 km | 7h39m14s | 1877 | i = 1°.1 | 0.06 | The potato-shaped inner satellite of Mars. Phobos lies just outside the Martian Roche limit. | e = 0.021 | A. Hall |
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