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HD 20367 is a star in the constellation of Aries, close to the border with the Perseus constellation. It is a yellow-white hued star that is a challenge to view with the naked eye, having an apparent visual magnitude of 6.40.<ref name=Abt2004/> Based upon parallax measurements, it is located 85 light years from the Sun. It is drifting further away with a radial velocity of +6.5 km/s.<ref name=GaiaDR3/> Based upon its movement through space, it is a candidate member of the Ursa Major Moving Group of co-moving stars that probably share a common origin.<ref name=Tabernero2017/>
This object is a late F-type main-sequence star with a stellar classification of F8V.<ref name=Abt2004/> It is about three<ref name=Earle2017/> billion years old and is spinning with a projected rotational velocity of 5.5 km/s.<ref name=Earle2017/> The star is 12%<ref name=GaiaDR2/> larger and 13%<ref name=Santos2013/> more massive than the Sun. It is radiating 1.58<ref name=GaiaDR2/> times the luminosity of the Sun from its photosphere at an effective temperature of 6,100 K.<ref name=GaiaDR2/>
Claims of a planetary systemEdit
In June 2002, an announcement was made that a Jupiter-mass or larger extrasolar planet had been found orbiting the star,<ref name=Geneva/> with a period of Template:Convert and an eccentricity of 0.32. The eccentric nature of this planet's orbit meant that it spends part of each circuit around the star outside the habitable zone.<ref name=Érdi2007/> However, subsequent observations in 2009 put the existence of this planet in doubt.<ref name=Wittenmyer2009/>
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See alsoEdit
ReferencesEdit
External linksEdit
- {{#invoke:citation/CS1|citation
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- HIP 15323 Catalog
- Image HD 20367
- Sky map