Sinope (moon)
Sinope /səˈnoʊpiː/ is a retrograde irregular satellite of Jupiter discovered by Seth Barnes Nicholson at Lick Observatory in 1914, and is named after Sinope of Greek mythology.
Sinope photographed by the Haute-Provence Observatory on 14 August 1998 | |
| Discovery | |
|---|---|
| Discovered by | Seth B. Nicholson |
| Discovery site | Lick Observatory |
| Discovery date | 21 July 1914 |
| Designations | |
Designation | Jupiter IX |
| Pronunciation | /səˈnoʊpiː/ |
Named after | Σινώπη Sinōpē |
| Adjectives | Sinopean /saɪnəˈpiːən/ |
| Orbital characteristics | |
| Epoch 23 March 2018 (JD 2458200.5) | |
| Observation arc | 103.87 yr (37,938 days) |
| 0.1629144 AU (24,371,650 km) | |
| Eccentricity | 0.3366550 |
| –777.29 d (2.13 years) | |
| 71.53524° | |
| 0° 27m 47.33s / day | |
| Inclination | 158.63840° (to ecliptic) |
| 8.61437° | |
| 60.30205° | |
| Satellite of | Jupiter |
| Group | Pasiphae group |
| Physical characteristics | |
Mean diameter | 35.0±0.6 km |
| 13.16±0.10 h | |
| Albedo | 0.042±0.006 |
| 18.3 | |
| 11.1 | |
Sinope did not receive its present name until 1975; before then, it was simply known as Jupiter IX. It was sometimes called "Hades" between 1955 and 1975.
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