Ersa (moon)
Ersa | |
---|---|
Provisional or systematic name | S / 2018 J 1 |
Central body | Jupiter |
Properties of the orbit | |
Major semi-axis | 11.5 million km |
Periapsis | unknown |
Apoapsis | unknown |
eccentricity | 0.09 |
Orbit inclination | 30.6 ° |
Orbital time | 252 d |
Physical Properties | |
discovery | |
Explorer | |
Remarks | Values relatively uncertain, as only 17 observations from March 25, 2017 to June 15, 2018 |
Ersa (also Jupiter LXXI) is one of the smaller moons of the planet Jupiter .
discovery
Ersa was discovered in 2018 by astronomers Scott S. Sheppard and Chad Trujillo on images dating back to March 25, 2017. It was temporarily given the designation S / 2018 J 1 and was named on August 23, 2019 by the International Astronomical Union after Ersa , the goddess of rope in Greek mythology .
Orbit data
Ersa orbits Jupiter with a major semi-axis of approx. 11.5 million kilometers in approx. 252 days. The track has an eccentricity of 0.09. The orbit incline is 30.6 °.
Physical data
Based on the brightness of the object, the diameter can be estimated at around 3 km.
Web links
- MPEC 2017-O18: S / 2018 J 1 July 17, 2018 (discovery)
- MPC 111804: Numbering of Natural Satellites September 25, 2018 (numbering)
swell
- ↑ Gareth V. Williams: MPEC 2018-O17: S / 2018 J 1 ( en ) In: Minor Planet Center . International Astronomical Union . July 17, 2018. Retrieved August 5, 2018.
- ↑ The results are in! Jovian moon-naming contest winners announced. Carnegie Institution for Science, August 23, 2019; accessed August 28, 2019 .
before | Jupiter moons | after that |
S / 2017 J 9 | Ersa (moon) |