Ananke (moon) Guide, Meaning , Facts, Information and Description

Ananke

Discovery
Discovered by	S. B. Nicholson
Discovered in	1951
Orbital characteristics
Mean radius	21,048,000 km
Eccentricity	0.083-0.452
Orbital period	~629d
Inclination	122.2-172.9°
Is a satellite of	Jupiter
Physical characteristics
Mean diameter	30 km
Surface area	km2
Mass	3.82×1016 kg
Mean density	2.7 g/cm3
Surface gravity	0.010 m/s2
Rotation period	?
Axial tilt	?°
Albedo	0.04
Surface temp	min mean max K K K
Atmospheric pressure	0 kPa

Ananke (pronounced "a NANG kee") is one of Jupiter's moons. It was discovered by Seth Barnes Nicholson at Mount Wilson Observatory in 1951 and is named after the mythological Ananke, the mother of Adrastea by Jupiter.

Ananke did not receive its present name until 1975; before then, it was simply known as "Jupiter XII".

It gives its name to the Ananke group, retrograde irregular moons which orbit Jupiter between 19.3 and 22.7 Gm, at inclinations of roughly 150°.

External links

• Nicholson, S.B., "An unidentified object near Jupiter, probably a new satellite", PASP 63 (1951) 297–299

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