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Mu Arae
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== Nomenclature == ''μ Arae'' ([[Latinisation of names|Latinised]] to ''Mu Arae'') is the star's [[Bayer designation]]. HD 160691 is the entry in the [[Henry Draper Catalogue]]. The established convention for extrasolar planets is that the planets receive designations consisting of the star's name followed by lower-case [[Latin alphabet|Roman letters]] starting from "b", in order of discovery.<ref name="planetnaming"/> This system was used by a team led by [[Krzysztof Goździewski]].<ref name="gozdziewski"/> On the other hand, a team led by [[Francesco Pepe]] proposed a modification of the designation system, where the planets are designated in order of characterization.<ref name="pepe"/> Since the parameters of the outermost planet were poorly constrained before the introduction of the 4-planet model of the system, this results in a different order of designations for the planets in the Mu Arae system. Both systems agree on the designation of the 640-day planet as "b". The old system designates the 9-day planet as "d", the 310-day planet as "e" and the outer planet as "c". Since the [[International Astronomical Union]] has not defined an official system for designations of extrasolar planets,<ref name=IAU_2006/> the issue of which convention is 'correct' remains open, however most subsequent scientific publications about this system appear to have adopted the Pepe ''et al.'' system, as has the system's entry in the [[Extrasolar Planets Encyclopaedia]].<ref name=Short_et_al_2008/><ref name=exoplanet/> In July 2014 the [[International Astronomical Union]] launched [[NameExoWorlds]], a process for giving proper names to certain exoplanets and their host stars.<ref>[http://www.iau.org/news/pressreleases/detail/iau1404/ NameExoWorlds: An IAU Worldwide Contest to Name Exoplanets and their Host Stars]. IAU.org. 9 July 2014</ref> The process involved public nomination and voting for the new names.<ref>{{Cite web |url=http://nameexoworlds.iau.org/process |title=NameExoWorlds The Process |access-date=5 September 2015 |archive-date=15 August 2015 |archive-url=https://web.archive.org/web/20150815025117/http://www.nameexoworlds.iau.org/process |url-status=dead }}</ref> In December 2015, the IAU announced the winning names were Cervantes for this star and Quijote, Dulcinea, Rocinante and Sancho, for its planets (b, c, d, and e, respectively; the IAU used the Pepe ''et al'' system).<ref>[http://www.iau.org/news/pressreleases/detail/iau1514/ Final Results of NameExoWorlds Public Vote Released], International Astronomical Union, 15 December 2015.</ref><ref>{{cite web |url=http://nameexoworlds.iau.org/systems/106 |title=The Proposals page for Mu Arae |date=3 January 2016 |publisher=[[International Astronomical Union]] |archive-url=https://web.archive.org/web/20190417033628/http://nameexoworlds.iau.org:80/systems/106 |archive-date=17 April 2019}}</ref> The winning names were those submitted by the Planetario de Pamplona, Spain. [[Miguel de Cervantes]] Saavedra (1547–1616) was a famous Spanish writer and author of ''[[Don Quixote|El Ingenioso Hidalgo Don Quixote de la Mancha]]''. The planets are named after characters of that novel: Quijote was the lead character; [[Dulcinea del Toboso|Dulcinea]] his love interest; [[Rocinante]] his horse, and [[Sancho Panza|Sancho]] his [[squire]].<ref>[http://www.nameexoworlds.iau.org/approved-names#comp-jwdpj57w NameExoWorlds The Approved Names]</ref> In 2016, the IAU organized a [[IAU Working Group on Star Names|Working Group on Star Names]] (WGSN)<ref name="WGSN">{{cite web | url=https://www.iau.org/science/scientific_bodies/working_groups/280/ | title=IAU Working Group on Star Names (WGSN)|access-date=22 May 2016}}</ref> to catalog and standardize proper names for stars. In its first bulletin of July 2016,<ref name="WGSN1">{{cite web | url=http://www.pas.rochester.edu/~emamajek/WGSN/WGSN_bulletin1.pdf | title=Bulletin of the IAU Working Group on Star Names, No. 1 |access-date=28 July 2016}}</ref> the WGSN explicitly recognized the names of exoplanets and their host stars approved by the Executive Committee Working Group Public Naming of Planets and Planetary Satellites, including the names of stars adopted during the 2015 NameExoWorlds campaign. This star is now so entered in the IAU Catalog of Star Names.<ref name="IAU-CSN"/>
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