Sinope (moon)
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| Discovery | |||||||
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| Discovered by | S. B. Nicholson | ||||||
| Discovered in | July 21, 1914 | ||||||
| Orbital characteristics | |||||||
| Mean radius | 24,214,390 km (0.16186 AU) | ||||||
| Eccentricity | 0.2468 | ||||||
| Periastron | 18,237,600 km (0.122 AU) | ||||||
| Apastron | 30,191,200 km (0.202 AU) | ||||||
| Orbital period | 769.779665 d (2.078 a) | ||||||
| Orbital circumference | 149,800,000 km (1.001 AU) | ||||||
| Orbital velocity | max: 2.943 km/s mean: 2.252 km/s min: 1.778 km/s | ||||||
| Inclination | 164.01° (to the ecliptic) 146.66° (to Jupiter's equator) | ||||||
| Is a satellite of | Jupiter | ||||||
| Physical characteristics | |||||||
| Mean diameter | 38 km | ||||||
| Surface area | ~4500 km2 | ||||||
| Volume | ~28,700 km3 | ||||||
| Mass | 7.5×1016 kg | ||||||
| Mean density | 2.6 g/cm3 | ||||||
| Surface gravity | 0.014 m/s2 (0.001 g) | ||||||
| Escape velocity | ~0.023 km/s | ||||||
| Rotation period | ? | ||||||
| Axial tilt | ?° | ||||||
| Albedo | 0.04 | ||||||
| Surface temp. |
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| Atmospheric pressure | 0 kPa | ||||||
Sinope (si-noe'-pee, Greek Σινώπη) was discovered by Seth Barnes Nicholson at Lick Observatory in 1914, and is named after Sinope of Greek mythology. It belongs to the Pasiphaë group, irregular retrograde moons orbiting Jupiter at distances ranging between 22.8 and 24.1 Gm, and with inclinations ranging between 144.5° and 158.3°.
Sinope did not receive its present name until 1975; before then, it was simply known as Jupiter IX. It was sometimes called "Hades".
Sinope was the outermost known moon of Jupiter until the discovery of Autonoe in 2001.
External links
- Seth B. Nicholson, "Discovery of the ninth satellite of Jupiter", PASP 26 (1914) 197–198 (http://adsabs.harvard.edu//full/seri/PASP./0026//0000197.000.html)
- Lick Observatory bulletin 271 (1915) 147–149
| Jupiter's natural satellites edit (https://academickids.com:443/encyclopedia/index.php?title=Template:Jupiter_Footer&action=edit) |
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| Metis | Adrastea | Amalthea | Thebe | Io | Europa | Ganymede | Callisto | Themisto | Leda | Himalia | Lysithea | Elara | S/2000 J 11 | Carpo | S/2003 J 12 | Euporie | S/2003 J 3 | S/2003 J 18 | Thelxinoe | Euanthe | Helike | Orthosie | Iocaste | S/2003 J 16 | Ananke | Praxidike | Harpalyke | Hermippe | Thyone | Mneme | S/2003 J 17 | Aitne | Kale | Taygete | S/2003 J 19 | Chaldene | S/2003 J 15 | S/2003 J 10 | S/2003 J 23 | Erinome | Aoede | Kallichore | Kalyke | Eurydome | S/2003 J 14 | Pasithee | Cyllene | Eukelade | S/2003 J 4 | Hegemone | Arche | Carme | Isonoe | S/2003 J 9 | S/2003 J 5 | Pasiphaë | Sinope | Sponde | Autonoe | Callirrhoe | Megaclite | S/2003 J 2 |
| Amalthea group | Galilean moons | Himalia group | Ananke group | Carme group | Pasiphaë group |
fr:Sinopé (lune) sk:Sinope (mesiac) sr:Синопе sv:Sinope (måne) zh:木卫九