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Jupiter LVII

Jupiter LVII, originally known as S/2003 J 5, is a retrograde irregular satellite of Jupiter. It was discovered by a team of astronomers from the University of Hawaii led by Scott S. Sheppard in 2003.[1][2]

Jupiter LVII is about 4 kilometres in diameter, and orbits Jupiter at an average distance of 23,974 Mm in 758.341 days, at an inclination of 166° to the ecliptic (167° to Jupiter's equator), in a retrograde direction and with an eccentricity of 0.307.

It belongs to the Carme group, made up of irregular retrograde moons orbiting Jupiter at a distance ranging between 23 and 24 Gm and at an inclination of about 165°.

The moon was lost following its discovery in 2003.[3][4][5][6] It was recovered in 2017 and given its permanent designation that year.[7]


  1. ^ IAUC 8087: Satellites of Jupiter 2003 March 4 (discovery)
  2. ^ MPEC 2003-E11: S/2003 J 1, 2003 J 2, 2003 J 3, 2003 J 4, 2003 J 5, 2003 J 6, 2003 J 7 2003 March 4 (discovery and ephemeris)
  3. ^ Beatty, Kelly (4 April 2012). "Outer-Planet Moons Found — and Lost". Sky & Telescope. Retrieved 27 June 2017. 
  4. ^ Brozović, Marina; Jacobson, Robert A. (9 March 2017). "The Orbits of Jupiter's Irregular Satellites". The Astronomical Journal. 153 (4). Bibcode:2017AJ....153..147B. doi:10.3847/1538-3881/aa5e4d. 
  5. ^ Jacobson, B.; Brozović, M.; Gladman, B.; Alexandersen, M.; Nicholson, P. D.; Veillet, C. (28 September 2012). "Irregular Satellites of the Outer Planets: Orbital Uncertainties and Astrometric Recoveries in 2009–2011". The Astronomical Journal. 144 (5). Bibcode:2012AJ....144..132J. doi:10.1088/0004-6256/144/5/132. Retrieved 27 June 2017. 
  6. ^ Sheppard, Scott S. (2017). "New Moons of Jupiter Announced in 2017". Retrieved 27 June 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. 
  7. ^ Sheppard, Scott S. (2017). "Jupiter's Known Satellites". Retrieved 10 August 2017.