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physical object > natural object > celestial body > natural satellite > Janus |
Janus comparison table |
Subject | is part of | is a kind of | is an instance of | has radiu | has discovery date | has inclination | has definition | has period | 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). | ||||||||
Janus | Saturn | natural satellite | R = 175 km | 1966 | i ≈ 0 | The innermost satellite of Saturn, just outside Saturn's rings. Named Janus for the first and the last. | P = 0.75 days | e ≈ 0 | Dollfus |
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