HD 102117
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HD 102117 or Uklun Template:IPAc-en is a star in the southern constellation of Centaurus. With an apparent visual magnitude of 7.47,[1] it is too dim to be seen without binoculars or a small telescope. It is located at a distance of approximately 129 light-years from the Sun based on parallax. HD 102117 is drifting further away with a radial velocity of +50 km/s,[2] having come to within Script error: No such module "convert". some 692,000 years ago.[1] It has one known planet.[6]
The stellar classification of HD 102117 is G6V,[9] which matches the spectrum of an ordinary G-type main-sequence star. It is roughly five[5] billion years old and is spinning with a projected rotational velocity of 0.9 km/s.[7] The star shows only a low level of chromospheric activity[6] and is photometrically stable,[4] meaning it doesn't vary significantly in brightness. It appears metal-enriched,[4] showing a higher abundance of heavy elements compared to the Sun.
Planetary system
In 2004, the Anglo-Australian Planet Search announced a planet orbiting the star.[4] A short time later the HARPS team also announced the presence of a planet around this star. Both groups detected this planet with the radial velocity method.[6]
HD 102117, and its planet HD 102117b, were chosen as part of the 2019 NameExoWorlds campaign organised by the International Astronomical Union, which assigned each country a star and planet to be named. HD 102117 was assigned to Pitcairn Islands. The winning proposal named the star Uklun, from the word aklan 'we/us' in the Pitcairn language, and the planet Leklsullun Template:IPAc-en, from the phrase lekl salan 'child/children' (lit. 'little person').[10]
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See also
References
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External links
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