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- HR 2131 (HD 41047) is a solitary star in the southern constellation Columba. It has an apparent magnitude of 5.52, allowing it to be faintly seen with the naked eye. The object is located at a distance of 670 light years but is receding with a heliocentric radial velocity of 19 km/s. HR 2131 has a stellar classification of K5 III, indicating that it is a red giant. It has 1.81 times the mass of the Sun and is 2.19 billion years old. The star's high luminosity of 501 L☉ and a low effective temperature of 3,700 K causes it to have an enlarged radius 49 times that of the Sun. HR 2131's metallicity – elements heavier than helium – is around solar level; it spins with a projected rotational velocity of about 2.6 km/s. (en)
- HD 41047,又名CD-33 2681,SAO 196413、HR 2131,是一颗恒星,视星等为5.55,位于銀經240.02,銀緯-24.51,其B1900.0坐标为赤經5h 57m 38.7s,赤緯-33° -24.51′ 45″。 (zh)
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- HD 41047,又名CD-33 2681,SAO 196413、HR 2131,是一颗恒星,视星等为5.55,位于銀經240.02,銀緯-24.51,其B1900.0坐标为赤經5h 57m 38.7s,赤緯-33° -24.51′ 45″。 (zh)
- HR 2131 (HD 41047) is a solitary star in the southern constellation Columba. It has an apparent magnitude of 5.52, allowing it to be faintly seen with the naked eye. The object is located at a distance of 670 light years but is receding with a heliocentric radial velocity of 19 km/s. (en)
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- HR 2131 (en)
- HD 41047 (sv)
- HD 41047 (zh)
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