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Jupiter LXI
Discovery
Discovered by	Brett J. Gladman
Discovery date	April 2003
Designations
Designation	Jupiter LXI
Alternative names	S/2003 J 19
Orbital characteristics
Semi-major axis	22757000 km
Eccentricity	0.257
Orbital period (sidereal)	−697.6 days
Mean anomaly	205.7°
Inclination	166.7°
Longitude of ascending node	105.7°
Argument of perihelion	284.1°
Satellite of	Jupiter
Group	Carme group
Physical characteristics
Mean diameter	2 km
Apparent magnitude	23.7

Jupiter LXI, provisionally known as S/2003 J 19, is a natural satellite of Jupiter. It was discovered by a team of astronomers led by Brett J. Gladman, et al. in 2003.^[2]^[3]

S/2003 J 19 is about 2 kilometers in diameter, and orbits Jupiter at an average distance of 22,709 Mm in 699.125 days, at an inclination of 165° to the ecliptic (164° to Jupiter's equator), in a retrograde direction and with an eccentricity of 0.1961.

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°.

This moon was lost following its discovery in 2003.^[4]^[5]^[6] It was recovered in 2018^[7] and given its permanent designation that year.^[8]

References

^ S.S. Sheppard (2019), Moons of Jupiter, Carnegie Science, on line
^ IAUC 8125: S/2003 J 19 and S/2003 J 20 Archived 2006-05-01 at the Wayback Machine 2003 April (discovery)
^ MPEC 2003-G64: S/2003 J 19 2003 April (discovery and ephemeris)
^ Beatty, Kelly (4 April 2012). "Outer-Planet Moons Found — and Lost". www.skyandtelescope.com. Sky & Telescope. Retrieved 27 June 2017.
^ Brozović, Marina; Jacobson, Robert A. (9 March 2017). "The Orbits of Jupiter's Irregular Satellites". The Astronomical Journal. 153 (4): 147. Bibcode:2017AJ....153..147B. doi:10.3847/1538-3881/aa5e4d.
^ 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): 132. Bibcode:2012AJ....144..132J. doi:10.1088/0004-6256/144/5/132. S2CID 123117568.
^ "MPEC 2018-O08 : S/2003 J 19". Minor Planet Center. International Astronomical Union. Retrieved 7 August 2018.
^ "M.P.C. 111804" (PDF). Minor Planet Center. International Astronomical Union. Retrieved 30 September 2018.

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[1] S.S. Sheppard (2019), Moons of Jupiter, Carnegie Science, on line

[2] IAUC 8125: S/2003 J 19 and S/2003 J 20 Archived 2006-05-01 at the Wayback Machine 2003 April (discovery)

[3] MPEC 2003-G64: S/2003 J 19 2003 April (discovery and ephemeris)

[4] Beatty, Kelly (4 April 2012). "Outer-Planet Moons Found — and Lost". www.skyandtelescope.com. Sky & Telescope. Retrieved 27 June 2017.

[Jacobson-5] Brozović, Marina; Jacobson, Robert A. (9 March 2017). "The Orbits of Jupiter's Irregular Satellites". The Astronomical Journal. 153 (4): 147. Bibcode:2017AJ....153..147B. doi:10.3847/1538-3881/aa5e4d.

[6] 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): 132. Bibcode:2012AJ....144..132J. doi:10.1088/0004-6256/144/5/132. S2CID 123117568.

[recovery-7] "MPEC 2018-O08 : S/2003 J 19". Minor Planet Center. International Astronomical Union. Retrieved 7 August 2018.

[designation-8] "M.P.C. 111804" (PDF). Minor Planet Center. International Astronomical Union. Retrieved 30 September 2018.

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