Jump to content

S/2003 J 12: Difference between revisions

From Wikipedia, the free encyclopedia
Browse history interactively
← Previous editNext edit →
Content deleted Content added
VisualWikitext
m link
No edit summary
Line 33: Line 33:
[[File:2003 J 12 Gladman CFHT annotated.gif|thumb|left|S/2003 J 12 imaged by the [[Canada-France-Hawaii Telescope]] during follow-up observations on 24 February 2003]]
[[File:2003 J 12 Gladman CFHT annotated.gif|thumb|left|S/2003 J 12 imaged by the [[Canada-France-Hawaii Telescope]] during follow-up observations on 24 February 2003]]


{{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;[[Orders_of_magnitude_(length)#1_megametre|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 21,600&nbsp;[[Orders_of_magnitude_(length)#1_megametre|Mm]] in 647 days, at an [[inclination]] of 155° to the [[ecliptic]], in a [[retrograde motion|retrograde]] direction and with an [[eccentricity (orbit)|eccentricity]] of 0.366.<ref name="MPEC-2021-A169"/> It was initially thought to the innermost of the retrograde satellites of Jupiter, but recovery observations have shown that it is an ordinary member of the [[Ananke group]].<ref name="Hecht2020"/>
|date=2007-06-28
|title=Planetary Satellite Mean Orbital Parameters
|publisher=JPL/NASA
|author=Jacobson, R. A.
|url=http://ssd.jpl.nasa.gov/?sat_elem#jupiter
|accessdate=2008-01-21}}</ref>


⚫
This moon was considered [[lost asteroid|lost]]<ref>{{cite web |url=http://www.skyandtelescope.com/astronomy-news/outer-planet-moons-found-and-lost/ |title=Outer-Planet Moons Found — and Lost |last=Beatty |first=Kelly |date=4 April 2012 |website=www.skyandtelescope.com |publisher=Sky & Telescope |access-date=27 June 2017}}</ref><ref name=Jacobson>{{cite journal |last1=Brozović |first1=Marina |last2=Jacobson |first2=Robert A. |date=9 March 2017 |title=The Orbits of Jupiter's Irregular Satellites |journal=The Astronomical Journal |volume=153 |issue=4 |pages=147 |doi=10.3847/1538-3881/aa5e4d|bibcode = 2017AJ....153..147B |doi-access=free }}</ref><ref>{{cite journal |last1=Jacobson |first1=B. |last2=Brozović |first2=M. |first3=B. |last3=Gladman |first4=M. |last4=Alexandersen |first5=P. D. |last5=Nicholson |first6=C. |last6=Veillet |date=28 September 2012 |title=Irregular Satellites of the Outer Planets: Orbital Uncertainties and Astrometric Recoveries in 2009–2011 |journal=The Astronomical Journal |volume=144 |issue=5 |pages=132 |doi=10.1088/0004-6256/144/5/132 |bibcode = 2012AJ....144..132J }}</ref><ref>{{cite web |url=http://home.dtm.ciw.edu/users/sheppard/satellites/jup2017.html |title=New Moons of Jupiter Announced in 2017 |last=Sheppard |first=Scott S. |date=2017 |website=home.dtm.ciw.edu |access-date=27 June 2017 |quote=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.}}</ref> until late 2020, when it was recovered in archival CFHT images from 2003-2011 by an amateur astronomer under the name Kenneth.<ref name="Hecht2020">{{cite web |url=https://skyandtelescope.org/astronomy-news/amateur-astronomer-finds-lost-moons-of-jupiter/ |title=Amateur Astronomer Finds "Lost" Moons of Jupiter |last=Hecht |first=Jeff |date=2021-01-11 |website=www.skyandtelescope.com |publisher=Sky & Telescope |access-date=2021-01-11}}</ref><ref name="MPEC-2021-A169"/>
It was initially thought to the innermost of the outer irregular retrograde satellites of Jupiter, but recovery observations have shown that it belongs to the [[Ananke group]].

⚫
This moon was considered [[lost asteroid|lost]]<ref>{{cite web |url=http://www.skyandtelescope.com/astronomy-news/outer-planet-moons-found-and-lost/ |title=Outer-Planet Moons Found — and Lost |last=Beatty |first=Kelly |date=4 April 2012 |website=www.skyandtelescope.com |publisher=Sky & Telescope |access-date=27 June 2017}}</ref><ref name=Jacobson>{{cite journal |last1=Brozović |first1=Marina |last2=Jacobson |first2=Robert A. |date=9 March 2017 |title=The Orbits of Jupiter's Irregular Satellites |journal=The Astronomical Journal |volume=153 |issue=4 |pages=147 |doi=10.3847/1538-3881/aa5e4d|bibcode = 2017AJ....153..147B |doi-access=free }}</ref><ref>{{cite journal |last1=Jacobson |first1=B. |last2=Brozović |first2=M. |first3=B. |last3=Gladman |first4=M. |last4=Alexandersen |first5=P. D. |last5=Nicholson |first6=C. |last6=Veillet |date=28 September 2012 |title=Irregular Satellites of the Outer Planets: Orbital Uncertainties and Astrometric Recoveries in 2009–2011 |journal=The Astronomical Journal |volume=144 |issue=5 |pages=132 |doi=10.1088/0004-6256/144/5/132 |bibcode = 2012AJ....144..132J }}</ref><ref>{{cite web |url=http://home.dtm.ciw.edu/users/sheppard/satellites/jup2017.html |title=New Moons of Jupiter Announced in 2017 |last=Sheppard |first=Scott S. |date=2017 |website=home.dtm.ciw.edu |access-date=27 June 2017 |quote=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.}}</ref> until late 2020, when it was recovered in archival CFHT images by an amateur astronomer under the name Kenneth.<ref name="Hecht2020">{{cite web |url=https://skyandtelescope.org/astronomy-news/amateur-astronomer-finds-lost-moons-of-jupiter/ |title=Amateur Astronomer Finds "Lost" Moons of Jupiter |last=Hecht |first=Jeff |date=2021-01-11 |website=www.skyandtelescope.com |publisher=Sky & Telescope |access-date=2021-01-11}}</ref>
{{clear|left}}
{{clear|left}}


Revision as of 19:33, 13 January 2021

S/2003 J 12
S/2003 J 12 imaged by the Canada-France-Hawaii Telescope in February 2003
Discovery [1]
Discovered byScott S. Sheppard et al.
Discovery siteMauna Kea Obs.
Discovery date5 February 2003
Orbital characteristics [2]
Epoch 17 December 2020 (JD 2459200.5)
Observation arc9.65 yr (3,525 d)
0.1441046 AU (21,557,740 km)
Eccentricity0.3657005
–1.77 yr (–646.64 d)
295.36521°
0° 33m 24.215s / day
Inclination154.69036° (to ecliptic)
127.52296°
86.84711°
Satellite ofJupiter
GroupAnanke group
Physical characteristics
≈1 km[3]
Albedo0.04 (assumed)[3]
23.9[3]
17.0[2]

S/2003 J 12 is a natural satellite of Jupiter, and is one of the smallest known natural satellites in the Solar System. It was discovered by a team of astronomers from the University of Hawaii led by Scott S. Sheppard in 2003.[4][1]

S/2003 J 12 imaged by the Canada-France-Hawaii Telescope during follow-up observations on 24 February 2003

S/2003 J 12 is about 1 kilometre (0.6 miles) in diameter, and orbits Jupiter at an average distance of 21,600 Mm in 647 days, at an inclination of 155° to the ecliptic, in a retrograde direction and with an eccentricity of 0.366.[2] It was initially thought to the innermost of the retrograde satellites of Jupiter, but recovery observations have shown that it is an ordinary member of the Ananke group.[5]

This moon was considered lost[6][7][8][9] until late 2020, when it was recovered in archival CFHT images from 2003-2011 by an amateur astronomer under the name Kenneth.[5][2]

References

  1. ^ a b 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)
  2. ^ a b c d "MPEC 2021-V169 : S/2003 J 12". Minor Planet Electronic Circular. Minor Planet Center. January 13, 2021. Retrieved January 13, 2021.
  3. ^ a b c S.S. Sheppard (2019), Moons of Jupiter, Carnegie Science, on line
  4. ^ Daniel W. E. Green (March 7, 2003). "IAUC 8089: Satellites of Jupiter". International Astronomical Union.
  5. ^ a b Hecht, Jeff (January 11, 2021). "Amateur Astronomer Finds "Lost" Moons of Jupiter". www.skyandtelescope.com. Sky & Telescope. Retrieved January 11, 2021.
  6. ^ Beatty, Kelly (April 4, 2012). "Outer-Planet Moons Found — and Lost". www.skyandtelescope.com. Sky & Telescope. Retrieved June 27, 2017.
  7. ^ Brozović, Marina; Jacobson, Robert A. (March 9, 2017). "The Orbits of Jupiter's Irregular Satellites". The Astronomical Journal. 153 (4): 147. Bibcode:2017AJ....153..147B. doi:10.3847/1538-3881/aa5e4d.
  8. ^ Jacobson, B.; Brozović, M.; Gladman, B.; Alexandersen, M.; Nicholson, P. D.; Veillet, C. (September 28, 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.
  9. ^ Sheppard, Scott S. (2017). "New Moons of Jupiter Announced in 2017". home.dtm.ciw.edu. Retrieved June 27, 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.
Retrieved from "https://en.wikipedia.org/enwiki/w/index.php?title=S/2003_J_12&oldid=1000137260"