File:2003_J_4_Gladman_CFHT_annotated.gif · Wikimedia Commons · See Wikimedia Commons
Key facts
- Discovered by
- Scott S. Sheppard et al.
- Discovery site
- Mauna Kea Obs.
- Discovery date
- 5 February 2003
- Observation arc
- 17 years, 2018-05-12 (last obs)
- Earliest precovery date
- 10 December 2001
- Semi major axis
- 0.1473856 AU (22,048,570 km)
- Orbital period sidereal
- –1.83 yr (–668.85 d)
- Mean anomaly
- 146.33793 °
- Mean motion
- 0° 32 17.664 / day
- Inclination
- 149.40138° (to ecliptic )
- Longitude of ascending node
- 249.91700°
- Argument of perihelion
- 240.54004°
- Satellite of
- Jupiter
- Group
- Pasiphae group
- Mean diameter
- ≈ 2 km
- Albedo
- 0.04 (assumed)
- Absolute magnitude h
- 16.69 (46 obs)
via Wikipedia infobox
~1 min read
Encyclopedic overview
S/2003 J 4 is a natural satellite of Jupiter. It was discovered by a team of astronomers from the University of Hawaiʻi led by Scott S. Sheppard in 2003.
S/2003 J 4 is about 2 km in diameter, and orbits Jupiter at an average distance of 23,000,000 km in 669 days, at an inclination of 149° to the ecliptic, in a retrograde direction and with an eccentricity of 0.497.
Excerpted from Wikipedia’s “S/2003 J 4” article, available under the CC BY-SA 4.0 licence.