WASP-19 is older than the Sun, has a fraction of heavy elements above the solar abundance, and is rotating rapidly, being spun up by the tides raised by the giant planet on a close orbit.[5]
The designationWASP-19 indicates that this was the 19th star found to have a planet by theWide Angle Search for Planets.
In August 2022, this planetary system was included among 20 systems to be named by the thirdNameExoWorlds project.[10] The approved names were proposed by a team from Brandon Park Primary School inWheelers Hill (Melbourne,Australia), led by scientist Lance Kelly and teacher David Maierhofer[11] and announced in June 2023. WASP-19 is named "Wattle" and its planet is named "Banksia", after the plant generaWattle (specifically the golden wattleAcacia pycnantha) andBanksia (specifically the scarlet banksiaBanksia coccinea) respectively.[8]
In December 2009, theSuperWASP project announced that ahot Jupiter typeexoplanet,WASP-19b, was orbiting very close to this star and with the shortest orbital period of any transiting exoplanet known at the time.[9]
^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
