Galatée (the moon)
See also: Galatée
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! bgcolor=" #6295da" colspan=" 2" | Discovered
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| Discovered by || Stephen P. Synnott
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| Discovered in || 1989 (< July 28th)
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! bgcolor=" #6295da" colspan=" 2" | Characteristics of the Orbit
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| Equatorial radius || 61.593 km
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| Eccentricity || 0,0000
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| Period of revolution || 0,429 D
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| Slope || 0,062°
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| Natural satellite of || Neptune
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! bgcolor=" #ffc0c0" colspan=" 2" | Physical characteristics
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| Diameter with the equator || 176 km
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| Mass || 3,7 × 1018 kg
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| Density average || 1,3×10³ kg/m³
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| Gravity of surface || 0,030 m/s ²
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| Period of rotation || probablement
synchronous
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| Albedo || 0,08
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| Temperature moyenne
on the surface || ~71 K
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! bgcolor=" #6295da" colspan=" 2" | Characteristics of the atmosphere
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| Atmospheric pressure || No atmosphere
|}
Galatée (NR VI Galatea) is the fourth the moon of Neptune. She was discovered at the time of the passage of the probe Voyager 2 in 1989 (temporary designation S/1989 NR 4 ). Its name comes from Galatée , a néréide (nymph marinades) Greek Mythologie.
Galatée is small a Celestial body 158 km maximum length irregular and does not present any geological activity.
The Orbit of Galatée, near of planet, is unstable and the moon declines towards Neptune because of the forces of tide of this one. It should probably break one day, form new a planetary Anneau or be crushed on Neptune.
See too
- (74) Galatée, a Asteroid.
Galatée
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