Laomedeia
Laomedeia /ˌleɪəməˈdiːə/, also known as Neptune XII, is a prograde irregular satellite of Neptune. It was discovered by Matthew J. Holman, et al. on August 13, 2002. Before the announcement of its name on February 3, 2007 (IAUC 8802), it was known as S/2002 N 3.
Laomedeia imaged by the Very Large Telescope's FORS1 imager in September 2002 | |
| Discovery | |
|---|---|
| Discovered by |
|
| Discovery date | August 13, 2002 |
| Designations | |
Designation | Neptune XII |
| Pronunciation | /ˌleɪəməˈdiːə/ |
Named after | Λαομέδεια Lāomedeia |
Alternative names | S/2002 N 3 |
| Adjectives | Laomedeian |
| Orbital characteristics | |
| Epoch 2003 Jun. 10.00 TT | |
Semi-major axis | 23,613,000 km |
| Eccentricity | 0.3969 |
Orbital period (sidereal) | 3171.33 days (8.68 yr) |
| Inclination | 37.874° |
| Satellite of | Neptune |
| Group | Sao group |
| Physical characteristics | |
Mean diameter | 42 km (for albedo 0.04) |
| Albedo | 0.04 (assumed) |
It orbits Neptune at a distance of about 23,571,000 km and is about 42 kilometers in diameter (assuming albedo of 0.04). It is named after Laomedeia, one of the 50 Nereids.
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