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| mass = 1.50{{e|12}} kg
| mass = 1.50{{e|12}} kg
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'''{{nowrap|S/2003 J 12}}''' is a [[natural satellite]] of [[Jupiter]], and is the smallest known satellite in the Solar System. It was discovered by a team of astronomers from the [[University of Hawaii]] led by [[Scott S. Sheppard]] in 2003.<ref>{{cite web |author=Daniel W. E. Green |url=http://www.cbat.eps.harvard.edu/iauc/08000/08089.html |publisher=International Astronomical Union |title=IAUC 8089: Satellites of Jupiter |date=March 7, 2003}}</ref><ref>[http://cfa-www.harvard.edu/mpec/K03/K03E29.html MPEC 2003-E29: S/2003 J 9, 2003 J 10, 2003 J 11, 2003 J 12; S/2003 J 1, 2003 J 6] April 3, 2003 (discovery and ephemeris)</ref>
'''{{nowrap|S/2003 J 12}}''' is a [[natural satellite]] of [[Jupiter]], and is the third-smallest known satellite in the Solar System, after [[Aegaeon (moon)|Aegaeon]] and [[S/2009 1]]. It was discovered by a team of astronomers from the [[University of Hawaii]] led by [[Scott S. Sheppard]] in 2003.<ref>{{cite web |author=Daniel W. E. Green |url=http://www.cbat.eps.harvard.edu/iauc/08000/08089.html |publisher=International Astronomical Union |title=IAUC 8089: Satellites of Jupiter |date=March 7, 2003}}</ref><ref>[http://cfa-www.harvard.edu/mpec/K03/K03E29.html MPEC 2003-E29: S/2003 J 9, 2003 J 10, 2003 J 11, 2003 J 12; S/2003 J 1, 2003 J 6] April 3, 2003 (discovery and ephemeris)</ref>


{{nowrap|S/2003 J 12}} is about 1 kilometre (0.6 miles) in diameter, and orbits Jupiter at an average distance of 17,883&nbsp;Mm in 489.72 days, at an [[inclination]] of 143°<!--- 142.686° ---> to the [[ecliptic]] (143°<!--- 142.618° ---> to Jupiter's equator), in a [[retrograde motion|retrograde]] direction and with an [[eccentricity (orbit)|eccentricity]] of 0.4920.<ref name=JPL>{{cite web
{{nowrap|S/2003 J 12}} is about 1 kilometre (0.6 miles) in diameter, and orbits Jupiter at an average distance of 17,883&nbsp;Mm in 489.72 days, at an [[inclination]] of 143°<!--- 142.686° ---> to the [[ecliptic]] (143°<!--- 142.618° ---> to Jupiter's equator), in a [[retrograde motion|retrograde]] direction and with an [[eccentricity (orbit)|eccentricity]] of 0.4920.<ref name=JPL>{{cite web

Revision as of 04:04, 12 June 2016

S/2003 J 12
Discovery
Discovered byScott S. Sheppard et al.
Discovery date2003
Orbital characteristics
Mean orbit radius
17.883 million km[1]
Eccentricity0.4920
489.72 days
Inclination143°
Physical characteristics
~0.5 km
Mass1.50×1012 kg

S/2003 J 12 is a natural satellite of Jupiter, and is the third-smallest known satellite in the Solar System, after Aegaeon and S/2009 1. It was discovered by a team of astronomers from the University of Hawaii led by Scott S. Sheppard in 2003.[2][3]

S/2003 J 12 is about 1 kilometre (0.6 miles) in diameter, and orbits Jupiter at an average distance of 17,883 Mm in 489.72 days, at an inclination of 143° to the ecliptic (143° to Jupiter's equator), in a retrograde direction and with an eccentricity of 0.4920.[1]

It is the innermost of the outer irregular retrograde satellites of Jupiter, and does not seem to belong to any group.

References

  1. ^ a b Jacobson, R. A. (June 28, 2007). "Planetary Satellite Mean Orbital Parameters". JPL/NASA. Retrieved January 21, 2008.
  2. ^ Daniel W. E. Green (March 7, 2003). "IAUC 8089: Satellites of Jupiter". International Astronomical Union.
  3. ^ MPEC 2003-E29: S/2003 J 9, 2003 J 10, 2003 J 11, 2003 J 12; S/2003 J 1, 2003 J 6 April 3, 2003 (discovery and ephemeris)
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