S / 2017 J 9

S / 2017 J 9
Central body	Jupiter
Properties of the orbit
Major semi-axis	21.5 million km
Periapsis	unknown
Apoapsis	unknown
eccentricity	0.23
Orbit inclination	152.7 °
Orbital time	639 d
Physical Properties
discovery
Explorer	Scott S. Sheppard
Remarks	Values ​​relatively uncertain, as so far only 15 observations from February 24, 2017 to May 17, 2018

S / 2017 J 9 (also Jupiter LXX) is one of the smaller moons of the planet Jupiter .

discovery

S / 2017 J 9 was discovered by astronomer Scott S. Sheppard in 2017 . 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 / 2017 J 9 in accordance with the system of the International Astronomical Union (IAU).

Orbit data

S / 2017 J 9 orbits Jupiter with a major semi-axis of approx. 21.5 million kilometers in approx. 639 days. The track has an eccentricity of 0.23. The orbit incline is 152.7 °.

Physical data

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

Web links

• MPEC 2017-O17: S / 2017 J 9 July 17, 2018 (discovery)
• MPC 111804: Numbering of Natural Satellites September 25, 2018 (numbering)

swell

1. ↑ Gareth V. Williams: MPEC 2018-O17: S / 2017 J 9 ( en ) In: Minor Planet Center . International Astronomical Union . July 17, 2018. Retrieved August 5, 2018.

before	Jupiter moons	after that
S / 2017 J 8	S / 2017 J 9	Ersa (moon)