S/2003 J 2

S/2003 J 2
	S/2003 J 2 imaged by the Canada-France-Hawaii Telescope during follow-up observations in February 2003
Discovery
Discovered by	Scott S. Sheppard et al.
Discovery site	Mauna Kea Obs.
Discovery date	5 February 2003
Orbital characteristics
	Epoch 17 December 2020 (JD 2459200.5)
Observation arc	16.42 yr (5,996 d)
Earliest precovery date	11 December 2001
Semi-major axis	0.1373976 AU (20,554,390 km)
Eccentricity	0.2776569
Orbital period	–1.65 yr (–602.02 d)
Mean anomaly	114.43587°
Mean motion	0° 35m 52.742s / day
Inclination	149.20392° (to ecliptic)
Longitude of ascending node	50.46976°
Argument of perihelion	224.95527°
Satellite of	Jupiter
Physical characteristics
Mean diameter	≈2 km
Albedo	0.04 (assumed)
Apparent magnitude	23.2
Absolute magnitude (H)	16.7

S/2003 J 2 is an unnamed non-spherical moon of Jupiter. It was found by a team of astronomers from the University of Hawaii led by Scott S. Sheppard and David C. Jewitt and was announced on March 4, 2003 ^[4]^[5] As of 2006, it is Jupiter's farthest known moon.

S/2003 J 2 is about two kilometres in diameter, and orbits Jupiter at an average distance of 29,540,000 km in 980 days, at an inclination of 154° to the ecliptic (152° to Jupiter's equator) and with an orbital eccentricity of 0.2255.^[6]^[7]^[8]

It seems to belong to a group all of its own, with a distant and retrograde orbit.

S/2003 J 2 Media

S/2003 J 2 and several bright background stars and galaxies imaged by the CFHT in April 2003

References

↑ Cite error: Invalid <ref> tag; no text was provided for refs named MPEC-2003-E11.
↑ ^2.0 ^2.1 Cite error: Invalid <ref> tag; no text was provided for refs named MPEC-2021-B134.
↑ ^3.0 ^3.1 ^3.2 Cite error: Invalid <ref> tag; no text was provided for refs named SheppardMoons.
↑ IAUC 8087: Satellites of Jupiter 2003 March 4 (discovery)
↑ Sheppard, S. S.; and Jewitt, D. C.; An Abundant Population of Small Irregular Satellites Around Jupiter, Nature, Vol. 423 (May 2003), pp. 261-263
↑ 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)
↑ Mean orbital elements from NASA JPL (August 2006)
↑ Current (2004 July 14, JD= 2453200.5) orbital elements as reported by IAU-MPC NSES are a= 0.2024818 AU, e=0.1882469 i=153.52114

This short article about science can be made longer. You can help Wikipedia by adding to it.

[MPEC-2003-E11-1] Cite error: Invalid <ref> tag; no text was provided for refs named MPEC-2003-E11.

[MPEC-2021-B134-2] 2.0 ^2.1 Cite error: Invalid <ref> tag; no text was provided for refs named MPEC-2021-B134.

[SheppardMoons-3] 3.0 ^3.1 ^3.2 Cite error: Invalid <ref> tag; no text was provided for refs named SheppardMoons.

[4] IAUC 8087: Satellites of Jupiter 2003 March 4 (discovery)

[SheppardJewitt2003-5] Sheppard, S. S.; and Jewitt, D. C.; An Abundant Population of Small Irregular Satellites Around Jupiter, Nature, Vol. 423 (May 2003), pp. 261-263

[6] 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)

[JPL_mean-7] Mean orbital elements from NASA JPL (August 2006)

[8] Current (2004 July 14, JD= 2453200.5) orbital elements as reported by IAU-MPC NSES are a= 0.2024818 AU, e=0.1882469 i=153.52114

[4]

[5]

[1]

[2]

[3]

[6]

[7]

[8]