WASP-12 is amagnitude 11yellow dwarfstar located approximately 1347light-years away[2] in theconstellationAuriga.[4] WASP-12 has amass andradius similar to theSun and is known for being orbited by a planet that is extremely hot and has aretrograde orbit around WASP-12. WASP-12 forms a triple star system with twored dwarf companions. Both of them have spectral types of M3V and are only 38% and 37% as massive as the Sun, respectively.[7]
In 2008, theextrasolar planetWASP-12b was discovered orbiting WASP-12 by thetransit method.[8] Its high carbon-to-oxygen ratio indicates that rocky planets might have formed in the star system, and it may be acarbon planet.[9] It is subject to intensive photo-evaporation, and may be completely destroyed within one billion years from now.[10]
In 2015, no indications of additional planets were found in the WASP-12 system.[6]
^abHenden, A. A.; et al. (2016). "VizieR Online Data Catalog: AAVSO Photometric All Sky Survey (APASS) DR9 (Henden+, 2016)".VizieR On-line Data Catalog: II/336. Originally Published in: 2015AAS...22533616H.2336.Bibcode:2016yCat.2336....0H.Vizier catalog entry
^abcSkrutskie, Michael F.; Cutri, Roc M.; Stiening, Rae; Weinberg, Martin D.; Schneider, Stephen E.; Carpenter, John M.; Beichman, Charles A.; Capps, Richard W.; Chester, Thomas; Elias, Jonathan H.; Huchra, John P.; Liebert, James W.; Lonsdale, Carol J.; Monet, David G.; Price, Stephan; Seitzer, Patrick; Jarrett, Thomas H.; Kirkpatrick, J. Davy; Gizis, John E.; Howard, Elizabeth V.; Evans, Tracey E.; Fowler, John W.; Fullmer, Linda; Hurt, Robert L.; Light, Robert M.; Kopan, Eugene L.; Marsh, Kenneth A.; McCallon, Howard L.; Tam, Robert; Van Dyk, Schuyler D.; Wheelock, Sherry L. (1 February 2006)."The Two Micron All Sky Survey (2MASS)".The Astronomical Journal.131 (2):1163–1183.Bibcode:2006AJ....131.1163S.doi:10.1086/498708.ISSN0004-6256.S2CID18913331.Vizier catalog entry
^Bechter, Eric B.; Crepp, Justin R.; Ngo, Henry; Knutson, Heather A.; Batygin, Konstantin; Hinkley, Sasha; Muirhead, Philip S.; Johnson, John Asher; Howard, Andrew W.; Montet, Benjamin T.; Matthews, Christopher T.; Morton, Timothy D. (2014). "WASP-12b AND HAT-P-8b ARE MEMBERS OF TRIPLE STAR SYSTEMS".The Astrophysical Journal.788 (1): 2.arXiv:1307.6857.Bibcode:2014ApJ...788....2B.doi:10.1088/0004-637X/788/1/2.S2CID36306243.
^Madhusudhan, Nikku; Harrington, Joseph; Stevenson, Kevin B.; Nymeyer, Sarah; Campo, Christopher J.; Wheatley, Peter J.; Deming, Drake; Blecic, Jasmina; et al. (December 8, 2010). "A high C/O ratio and weak thermal inversion in the atmosphere of exoplanet WASP-12b".Nature.469 (7328):64–7.arXiv:1012.1603.Bibcode:2011Natur.469...64M.doi:10.1038/nature09602.PMID21150901.S2CID4415171..
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