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WASP-19
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<h2 id="nomenclature">Nomenclature</h2> <p>The designation <i>WASP-19</i> indicates that this was the 19th star found to have a planet by the <a href="/facts/Wide_Angle_Search_for_Planets/fp58Y205">Wide Angle Search for Planets</a>. </p><p>In August 2022, this planetary system was included among 20 systems to be named by the third <a href="/facts/NameExoWorlds/NpRMt4m0">NameExoWorlds</a> project.<a class="footnote-ref" id="fnref:4" href="#fn:4"><sup>4</sup></a> The approved names were proposed by a team from Brandon Park Primary School in <a href="/facts/Wheelers_Hill/1rMXdJXa">Wheelers Hill</a> (<a href="/facts/Melbourne/EHY9YxI0">Melbourne</a>, <a href="/facts/Australia/qLHpbppq">Australia</a>), led by scientist Lance Kelly and teacher David Maierhofer <a class="footnote-ref" id="fnref:5" href="#fn:5"><sup>5</sup></a> and announced in June 2023. WASP-19 is named "Wattle" and its planet is named "Banksia", after the plant genera <a href="/facts/Acacia_sensu_lato/6voSELsk">Wattle</a> (specifically the golden wattle <i><a href="/facts/Acacia_pycnantha/9bGYnU9d">Acacia pycnantha</a></i>) and <a href="/facts/Banksia/2cdsI3g6">Banksia</a> (specifically the scarlet banksia <i><a href="/facts/Banksia_coccinea/wcdy8TnU">Banksia coccinea</a></i>) respectively.<a class="footnote-ref" id="fnref:6" href="#fn:6"><sup>6</sup></a> </p> <h2 id="planetary-system">Planetary system</h2> <p>In December 2009, the <a href="/facts/SuperWASP/fp58Y205">SuperWASP</a> project announced that a <a href="/facts/Hot_Jupiter/9wSFCuxk">hot Jupiter</a> type <a href="/facts/Exoplanet/zjfmqfUf">exoplanet</a>, <a href="/facts/WASP-19b/xkNFheYN">WASP-19b</a>, was orbiting very close to this star and with the shortest orbital period of any transiting exoplanet known at the time.<a class="footnote-ref" id="fnref:7" href="#fn:7"><sup>7</sup></a> </p> The WASP-19 planetary system<a class="footnote-ref" id="fnref:8" href="#fn:8"><sup>8</sup></a><a class="footnote-ref" id="fnref:9" href="#fn:9"><sup>9</sup></a><table><tbody><tr><th>Companion(in order from star)</th><th><a href="/facts/Mass/HHdc8XmF">Mass</a></th><th><a href="/facts/Semi-major_and_semi-minor_axes/l7JES2wo">Semimajor axis</a>(<a href="/facts/Astronomical_unit/gjsbu5xU">AU</a>)</th><th><a href="/facts/Orbital_period/94f56uh2">Orbital period</a>(<a href="/facts/Day/MTAtWLDj">days</a>)</th><th><a href="/facts/Orbital_eccentricity/WGlB4NBn">Eccentricity</a></th><th><a href="/facts/Orbital_inclination/TQCFWyfd">Inclination</a></th><th><a href="/facts/Radius/9Gr9deYD">Radius</a></th></tr><tr><td><a href="/facts/WASP-19b/xkNFheYN">b / Banksia</a></td><td>1.168±0.023 <a href="/facts/Jupiter_mass/EtLUmeEN">MJ</a></td><td>0.01634 ± 0.00019</td><td>0.7888396 ± 0.00000010</td><td>0</td><td>78.76 ± 0.13<a href="/facts/Degree_(angle)/f48Ns8SX">°</a></td><td>1.18±0.12 <a href="/facts/Jupiter_radius/sT995rQ5">RJ</a></td></tr></tbody></table> <h2 id="see-also">See also</h2> <ul><li><a href="/facts/List_of_extrasolar_planets/op9vhHys">List of extrasolar planets</a></li></ul> <h2 id="references">References</h2> <ol> <li id="fn:1"><p>"2022 Approved Names". nameexoworlds.iau.org. IAU. Retrieved 7 June 2023. <a href="https://www.nameexoworlds.iau.org/2022approved-names" target="_blank">https://www.nameexoworlds.iau.org/2022approved-names</a> <a href="#fnref:1" class="footnote-back-ref">↩</a></p></li> <li id="fn:2"><p>Hebb, L.; et al. (2010). "WASP-19b: The Shortest Period Transiting Exoplanet Yet Discovered". The Astrophysical Journal. 708 (1): 224–231. arXiv:1001.0403. Bibcode:2010ApJ...708..224H. doi:10.1088/0004-637X/708/1/224. S2CID 119189785. <a href="/wiki/ArXiv_(identifier)" target="_blank">/wiki/ArXiv_(identifier)</a> <a href="#fnref:2" class="footnote-back-ref">↩</a></p></li> <li id="fn:3"><p>Maxted, P. F. L.; Serenelli, A. M.; Southworth, J. (2015), "A comparison of gyrochronological and isochronal age estimates for transiting exoplanet host stars", Astronomy & Astrophysics, 577: A90, arXiv:1503.09111, Bibcode:2015A&A...577A..90M, doi:10.1051/0004-6361/201525774, S2CID 53324330 <a href="/wiki/ArXiv_(identifier)" target="_blank">/wiki/ArXiv_(identifier)</a> <a href="#fnref:3" class="footnote-back-ref">↩</a></p></li> <li id="fn:4"><p>"List of ExoWorlds 2022". nameexoworlds.iau.org. IAU. 8 August 2022. Retrieved 27 August 2022. <a href="https://www.nameexoworlds.iau.org/2022exoworlds" target="_blank">https://www.nameexoworlds.iau.org/2022exoworlds</a> <a href="#fnref:4" class="footnote-back-ref">↩</a></p></li> <li id="fn:5"><p>"Facebook". www.facebook.com. <a href="https://www.facebook.com/pages/DrBradTucker/100063510852713" target="_blank">https://www.facebook.com/pages/DrBradTucker/100063510852713</a> <a href="#fnref:5" class="footnote-back-ref">↩</a></p></li> <li id="fn:6"><p>"2022 Approved Names". nameexoworlds.iau.org. IAU. Retrieved 7 June 2023. <a href="https://www.nameexoworlds.iau.org/2022approved-names" target="_blank">https://www.nameexoworlds.iau.org/2022approved-names</a> <a href="#fnref:6" class="footnote-back-ref">↩</a></p></li> <li id="fn:7"><p>Hebb, L.; et al. (2010). "WASP-19b: The Shortest Period Transiting Exoplanet Yet Discovered". The Astrophysical Journal. 708 (1): 224–231. arXiv:1001.0403. Bibcode:2010ApJ...708..224H. doi:10.1088/0004-637X/708/1/224. S2CID 119189785. <a href="/wiki/ArXiv_(identifier)" target="_blank">/wiki/ArXiv_(identifier)</a> <a href="#fnref:7" class="footnote-back-ref">↩</a></p></li> <li id="fn:8"><p>Mancini, L.; et al. (2013). "Physical properties, transmission and emission spectra of the WASP-19 planetary system from multi-colour photometry". Monthly Notices of the Royal Astronomical Society. 436 (1): 2–18. arXiv:1306.6384. Bibcode:2013MNRAS.436....2M. doi:10.1093/mnras/stt1394. S2CID 55455709. <a href="https://doi.org/10.1093%2Fmnras%2Fstt1394" target="_blank">https://doi.org/10.1093%2Fmnras%2Fstt1394</a> <a href="#fnref:8" class="footnote-back-ref">↩</a></p></li> <li id="fn:9"><p>Dragomir, Diana; Kane, Stephen R.; Pilyavsky, Genady; Mahadevan, Suvrath; Ciardi, David R.; Zachary Gazak, J.; Gelino, Dawn M.; Payne, Alan; Rabus, Markus; Ramirez, Solange V.; von Braun, Kaspar; Wright, Jason T.; Wyatt, Pamela (2011). "Terms Photometry of Known Transiting Exoplanets". The Astronomical Journal. 142 (4): 115. arXiv:1108.2308. Bibcode:2011AJ....142..115D. doi:10.1088/0004-6256/142/4/115. S2CID 118606598. <a href="/wiki/Suvrath_Mahadevan" target="_blank">/wiki/Suvrath_Mahadevan</a> <a href="#fnref:9" class="footnote-back-ref">↩</a></p></li> </ol>