Jupiter LV

Jupiter LV, provisionally known as S/2003 J 18, is a natural satellite of Jupiter. It was discovered by a team of astronomers led by Brett J. Gladman in 2003.[2][3]

Jupiter LV

Discovery
Discovered by	Brett J. Gladman
Discovery date	April 4, 2003
Designations
Designation	Jupiter LX
Alternative names	S/2003 J 18
Orbital characteristics [1]
Semi-major axis	20274000 km
Eccentricity	0.105
Orbital period	−588.0 days
Mean anomaly	220.7°
Inclination	146.4°
Longitude of ascending node	215.5°
Argument of perihelion	98.15°
Satellite of	Jupiter
Group	Ananke group
Physical characteristics
Mean diameter	2 km
Apparent magnitude	23.4

Jupiter LV is about 2 kilometres in diameter, and orbits Jupiter at an average distance of 20.220 Gm in 587.38 days, at an inclination of 146° to the ecliptic (148° to Jupiter's equator), in a retrograde direction and with an eccentricity of 0.1048.[4]

It belongs to the Ananke group, retrograde irregular moons that orbit Jupiter between 22.8 and 24.1 Gm, at inclinations of roughly 150-155°.

The moon was lost following its discovery in 2003.[5][6][7][8] It was recovered in 2017 and given its permanent designation that year.[9]

References

1. S.S. Sheppard (2019), Moons of Jupiter, Carnegie Science, on line
2. Daniel W. E. Green (April 11, 2003). "IAUC 8116: Satellites of Jupiter and Saturn". International Astronomical Union.
3. MPEC 2003-G20: S/2003 J 18 April 4, 2003 (discovery)
4. MPEC 2017-L09: S/2003 J 18 June 2, 2017 (recovery and ephemeris)
5. Beatty, Kelly (April 4, 2012). "Outer-Planet Moons Found — and Lost". www.skyandtelescope.com. Sky & Telescope. Retrieved June 27, 2017.
6. Brozović, Marina; Jacobson, Robert A. (March 9, 2017). "The Orbits of Jupiter's Irregular Satellites". The Astronomical Journal. 153 (4): 147. Bibcode:2017AJ....153..147B. doi:10.3847/1538-3881/aa5e4d.
7. Jacobson, B.; Brozović, M.; Gladman, B.; Alexandersen, M.; Nicholson, P. D.; Veillet, C. (September 28, 2012). "Irregular Satellites of the Outer Planets: Orbital Uncertainties and Astrometric Recoveries in 2009–2011". The Astronomical Journal. 144 (5): 132. Bibcode:2012AJ....144..132J. doi:10.1088/0004-6256/144/5/132.
8. Sheppard, Scott S. (2017). "New Moons of Jupiter Announced in 2017". home.dtm.ciw.edu. Retrieved June 27, 2017. We likely have all of the lost moons in our new observations from 2017, but to link them back to the remaining lost 2003 objects requires more observations a year later to confirm the linkages, which will not happen until early 2018. ... There are likely a few more new moons as well in our 2017 observations, but we need to reobserve them in 2018 to determine which of the discoveries are new and which are lost 2003 moons.
9. Sheppard, Scott S. (2017). "Jupiter's Known Satellites". home.dtm.ciw.edu. Archived from the original on July 20, 2017. Retrieved August 10, 2017.