Carme (moon)

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Carme
Discovery
Discovered by: S. B. Nicholson
Discovery date: July 30, 1938
Orbital characteristics
Periapsis: 16,324,700 km (0.109 AU)
Apoapsis: 31,144,200 km (0.208 AU)
Mean radius of orbit: 23,734,465 km (0.15866 AU)
Orbital circumference: 145,425,000 km (0.972 AU)
Eccentricity: 0.3122
Orbital period: 747.008062 d (2.045 a)
Avg. orbital speed: 2.253 km/s
Max. orbital speed: 3.191 km/s
Min. orbital speed: 1.673 km/s
Inclination: 165.54° (to the ecliptic)
167.53° (to Jupiter's equator)
Satellite of: Jupiter
Physical characteristics
Mean radius: 23 km
Surface area: ~6600 km²
Volume: ~51,000 km³
Mass: 1.3×1017 kg
Mean density: 2.6 g/cm³
Equatorial surface gravity: ~0.017 m/s2 (0.0017 g)
Escape velocity: ~0.028 km/s
Albedo: 0.04
Temperature: ~124 K

Carme (kar'-mee, IPA: [ˈkɑrmi]; Greek Κάρμη) is a retrograde irregular satellite of Jupiter. It was discovered by Seth Barnes Nicholson at Mount Wilson Observatory in California in July 1938. It is named after the mythological Carme, mother by Zeus of Britomartis, a Cretan goddess.

Carme did not receive its present name until 1975; before then, it was simply known as Jupiter XI. It was sometimes called "Pan". Note that Pan is now the name of a satellite of Saturn.

It gives its name to the Carme group, made up of irregular retrograde moons orbiting Jupiter at a distance ranging between 23 and 24 Gm and at an inclination of about 165°.

This moon should not be confused with the asteroid 558 Carmen.

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