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'''HD 202206 c''' is an [[extrasolar planet]] discovered on November 16, 2004, using long-term observation of a formerly unconfirmed second planet after the discovery of a [[brown dwarf]] (first companion) around the star [[HD 202206]].<ref name=Correia2005/> |
'''HD 202206 c''' is an [[extrasolar planet]] discovered on November 16, 2004, using long-term observation of a formerly unconfirmed second planet after the discovery of a [[brown dwarf]] (first companion) around the star [[HD 202206]].<ref name=Correia2005/> |
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The planet orbits 3.07 times further out and is 85% less massive than the first companion, having a semi-[[amplitude]] of only 42 m/s. Its [[minimum mass]] is 2.44 times that of [[Jupiter]] and its [[diameter]] is likely roughly the same size as Jupiter's. The [[orbital resonance]] of the planet orbiting the brown dwarf is 5:1 |
The planet orbits 3.07 times further out and is 85% less massive than the first companion, having a semi-[[amplitude]] of only 42 m/s. Its [[minimum mass]] is 2.44 times that of [[Jupiter]] and its [[diameter]] is likely roughly the same size as Jupiter's. The [[orbital resonance]] of the planet orbiting the brown dwarf is 5:1.<ref name=Correia2005/> |
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Further observation of this system via [[astrometry]] revised this picture in 2017, showing that HD 202206 c is a [[brown dwarf]] or [[super-Jupiter]], with a true mass 17.9 times that of Jupiter, in a circumbinary orbit around a pair of co-orbiting stars being viewed nearly face-on.<ref name=Benedict2017/> |
Further observation of this system via [[astrometry]] revised this picture in 2017, showing that HD 202206 c is a [[brown dwarf]] or [[super-Jupiter]], with a true mass 17.9 times that of Jupiter, in a [[circumbinary planet|circumbinary orbit]] around a pair of co-orbiting stars being viewed nearly face-on.<ref name=Benedict2017/> |
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== References == |
== References == |
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| volume=153 | issue=6 | id=258 | pages=12 | date=June 2017 |
| volume=153 | issue=6 | id=258 | pages=12 | date=June 2017 |
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| doi=10.3847/1538-3881/aa6d59 | arxiv=1705.00659 |
| doi=10.3847/1538-3881/aa6d59 | arxiv=1705.00659 |
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| bibcode=2017AJ....153..258B | s2cid=119105717 }}</ref> |
| bibcode=2017AJ....153..258B | s2cid=119105717 | doi-access=free }}</ref> |
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{{Capricornus}} |
{{Capricornus}} |
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{{DEFAULTSORT:Hd 202206 C}} |
{{DEFAULTSORT:Hd 202206 C}} |
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[[Category:Capricornus |
[[Category:Capricornus]] |
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[[Category:Giant planets]] |
[[Category:Giant planets]] |
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[[Category:Exoplanets discovered in 2004]] |
[[Category:Exoplanets discovered in 2004]] |
Discovery | |
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Discovered by | Correia et al. |
Discovery date | November 16, 2004 |
Radial velocity | |
Orbital characteristics[1] | |
2.41 AU (361,000,000 km) | |
Eccentricity | 0.22±0.03 |
1260±11 d | |
Inclination | 7.7±1.1 |
91±11 | |
2453103±452 | |
280±4 | |
Semi-amplitude | 0.041±0.001 km/s |
Star | HD 202206 |
Physical characteristics[1] | |
Mass | 17.9+2.9 −1.8 MJ |
HD 202206 c is an extrasolar planet discovered on November 16, 2004, using long-term observation of a formerly unconfirmed second planet after the discovery of a brown dwarf (first companion) around the star HD 202206.[2]
The planet orbits 3.07 times further out and is 85% less massive than the first companion, having a semi-amplitude of only 42 m/s. Its minimum mass is 2.44 times that of Jupiter and its diameter is likely roughly the same size as Jupiter's. The orbital resonance of the planet orbiting the brown dwarf is 5:1.[2]
Further observation of this system via astrometry revised this picture in 2017, showing that HD 202206 c is a brown dwarforsuper-Jupiter, with a true mass 17.9 times that of Jupiter, in a circumbinary orbit around a pair of co-orbiting stars being viewed nearly face-on.[1]
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