71 Cancri is a star in the constellation Cancer. Its spectral classification A2 indicates that it is an A-type star but the luminosity class is not specified.[1] Parallax measurements imply a distance of 271 parsecs (880 ly), and it is drifting further away at a speed of 28 km/s.[2] Being apparent magnitude 8.1, it is not visible to the naked eye.[1]

This A-type star is estimated to be 750 million years old (16% Solar System age). It has a mass roughly 2.2 times the mass of the Sun and an enlarged radius three times that of the Sun. 71 Cancri is 33 times more luminous and 40% hotter, with a surface effective temperature of 8,051 K. Its apparent brightness is diminished by 0.02 magnitudes due to interveining gas and dust between Earth and the star.[2]

References

  1. ^ a b c d e f g "71 Cancri". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2024-06-19.
  2. ^ a b c d e f g Vallenari, A.; et al. (Gaia collaboration) (2023). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy and Astrophysics. 674: A1. arXiv:2208.00211. Bibcode:2023A&A...674A...1G. doi:10.1051/0004-6361/202243940. S2CID 244398875. Gaia DR3 record for this source at VizieR.
  1. ^ Obtained with a right ascension of 09h 05m 45.5255s and a declination of +17° 23′ 24.4645″[1] on this website.
Allikas: https://en.wikipedia.org/wiki/71_Cancri
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