Despina (moon)
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 Despina as seen by Voyager 2 (smeared horizontally) |
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| Discovery | |
|---|---|
| Discovered by | Stephen P. Synnott |
| Discovered in | July 1989 |
| Orbital characteristics | |
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| Semi-major axis | 52 526 ± 1 km |
| Eccentricity | 0.0002 ± 0.0002 |
| Orbital period | 0.33465551 ± 0.00000001 d |
| Inclination | 0.216 ± 0.014° (to Neptune equator) 0.06° (to local Laplace plane) |
| Is a moon of | Neptune |
| Physical characteristics | |
| Dimensions | 180×150×130 km |
| Mass | ~2.1×1018 kg (based on assumed density) |
| Mean density | ~1.2 g/cm3 (estimate) |
| Rotation period | assumed synchronous |
| Axial tilt | ~zero presumably |
| Albedo (geometric) | 0.09[1] |
| Surface temp. | ~51 K mean (estimate) |
| Atmosphere | none |
Despina or Neptune V, is the third closest moon to Neptune. It is named after Despina, a nymph who was a daughter of Poseidon.
Despina was found in late July, 1989 from the images taken by the Voyager 2 probe. It was given the designation S/1989 N 3.
Despina is not a sphere and shows no sign of any geological changes.
[change] Other websites
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| Moons | Naiad · Thalassa · Despina · Galatea · Larissa · Proteus · Triton · Nereid · Halimede · Sao · Laomedeia · Psamathe · Neso |  |
| Characteristics | Rings of Neptune · Great Dark Spot | |
| Discovery | John Couch Adams · Johann Gottfried Galle · William Lassell · Urbain Le Verrier | |
| Exploration | Voyager program · Voyager 2 | |
| Neptune Trojans | 2001 QR322 · 2004 UP10 · 2005 TN53 · 2005 TO74 · 2006 RJ103 · 2007 RW10 | |
