S / 2011 J 2

S / 2011 J 2
Central body	Jupiter
Properties of the orbit
Major semi-axis	approx. 23.27 million km
Periapsis	approx. 14.27 million km
Apoapsis	approx. 32.26 million km
eccentricity	0.387
Argument of the periapsis	322.20 °
Medium anomaly	12.65 °
Orbit inclination	151.85 °
Argument of the node	88.67 °
Orbital time	725.1 d
Mean orbital velocity	2.33 km / s
Physical Properties
Apparent brightness	23.5 likes
Medium diameter	1 km
discovery
Explorer	Scott S. Sheppard
Date of discovery	September 27, 2011
Remarks	Values ​​relatively uncertain, as so far only 13 observations from Sept. 27, 2011 to Nov. 28, 2011

S / 2011 J 2 (also Jupiter LVI ) is one of the smaller moons of the planet Jupiter .

discovery

S / 2011 J 2 was discovered by astronomer Scott S. Sheppard on September 27, 2011 . The moon has not yet been given an official name - the moons of Jupiter are usually female figures from Greek mythology - but is provisionally designated as S / 2011 J 2 according to the system of the International Astronomical Union (IAU).

Orbit data

S / 2011 J 2 orbits Jupiter with a major semi-axis of approx. 23.27 million kilometers in approx. 725 days. The track has an eccentricity of 0.387. The orbit is retrograde with an inclination of approx. 152 °, i. that is, the moon moves around the planet against the direction of rotation of Jupiter.

Physical data

Based on the brightness of the object, the diameter can be estimated to be about 1 km.

Web links

• MPEC 2012-B97: S / 2011 J 1 and S / 2011 J 2 January 29, 2012 (discovery)
• CBET 3002: New Satellites of Jupiter: S / 2011 J 1 and S / 2011 J 2 January 29, 2012 (Discovery)
• IAUC 9252: S / 2011 J 1 and S / 2011 J 2  (currently still subject to registration) June 3, 2012 (discovery)
• MPEC 2017-L10: S / 2011 J 2 June 2, 2017 (rediscovery)

swell

1. ^ IAU Minor Planet Center

before	Jupiter moons	after that
S / 2003 J 18	S / 2011 J 2	Eirene (moon)