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HD 156411 b (also known as HIP 84787 b) is an extrasolar planet which orbits the G-type main sequence star HD 156411, located approximately 179 light years away in the constellation Ara. This planet has at least three-fourths the mass of Jupiter and takes eight-thirds years to orbit the star at a semimajor axis of 1.81 AU.[1] However unlike most other known exoplanets, its eccentricity is not known, but it is typical that its inclination is not known. This planet was detected by HARPS on October 19, 2009, together with 29 other planets.

HD 156411 b
Discovery
Discovered byNaef et al.
Discovery siteLa Silla Observatory
Discovery dateOctober 19, 2009
Detection method
radial velocity (HARPS)
Orbital characteristics
Semi-major axis
1.81 AU (271,000,000 km)
Orbital period (sidereal)
842 d
2.31 y
StarHD 156411

    The planet HD 156411 b is named Sumajmajta. The name was selected in the NameExoWorlds campaign by Peru, during the 100th anniversary of the IAU. Sumaj Majta was one half of the couple involved in a tragic love story Way to the Sun by Abraham Valdelomar.[2][3]


    References


    1. Naef, Dominique; Mayor, Michel; Lo Curto, Gaspare; Bouchy, François; Lovis, Christophe; Moutou, Claire; Benz, Willy; Pepe, Francesco; Queloz, Didier; Santos, Nuno C.; Ségransan, Damien; Udry, Stéphane; Bonfils, Xavier; Delfosse, Xavier; Forveille, Thierry; Hébrard, Guillaume; Mordasini, Christoph; Perrier, Christian; Boisse, Isabelle; Sosnowska, Danuta (2010). "The HARPS Search for Southern Extrasolar Planets XXIII. 8 Planetary Companions to Low-activity Solar-type Stars". Astronomy and Astrophysics. 523: A15. arXiv:1008.4600. Bibcode:2010A&A...523A..15N. doi:10.1051/0004-6361/200913616. S2CID 118845989.
    2. "Approved names". NameExoworlds. Retrieved 2020-01-02.
    3. "International Astronomical Union | IAU". www.iau.org. Retrieved 2020-01-02.


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    HD 156411 b (también conocido como HIP 84787 b) es un planeta extrasolar que orbita la estrella de tipo G de la secuencia principal HD 156411, localizado aproximadamente a 179 años luz, en la constelación de Ara. Este planeta tiene al menos un 75% de la masa de Júpiter y tarda 2,31 años en completar su periodo orbital, con un semieje mayor de 1,81 UA. Sin embargo, a diferencia de la mayoría de los exoplanetas conocidos, su excentricidad no se conoce, pero es habitual que se desconozca su inclinación. Este planeta fue detectado por HARPS el 19 de octubre de 2009, junto con 29 otros planetas. El astrónomo Wladimir Lyra (2009) ha propuesto Melaeneus como el nombre común posible para HD 156411 b.[1]


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