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31 Comae Berenices

Star in the constellation Coma Berenices

Star in the constellation Coma Berenices

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31 Comae Berenices (31 Com) is a yellow giant star in the constellation Coma Berenices. Its apparent magnitude is about 4.9 and slightly variable. It is visible to the naked eye. In 1997, Klaus G. Strassmeier et al. announced their discovery that the star is a variable star. It was given its variable star designation, LS Comae Berenices, in 2003. It is a rare FK Comae Berenices variable, a variable star that spins rapidly and has large starspots on its surface. It is currently in the Hertzsprung gap and its outer envelope has just begun convection. In 1989 it was given as a spectral standard for the class G0IIIp.

31 Com is the north galactic pole star, and occasionally goes by the informal name Polaris Galacticum Borealis, coined by Jim Kaler.

In Chinese astronomy, 31 Comae Berenices is called 郎將, Pinyin: Lángjiāng, meaning Captain of the Bodyguards, because this star is marking itself and stand alone in Captain of the Bodyguards asterism, Supreme Palace enclosure mansion (see: Chinese constellation).

References

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References

  1. "Polaris Galacticum Borealis".
  2. [http://www.ianridpath.com/startales/comaberenices.htm Ian Ridpath's Startales - Coma Berenices the Berenice's Hair]
  3. "31 Com".
  4. {{cite DR2
  5. {{cite XHIP. 62763
  6. (2023). "The cosmic waltz of Coma Berenices and Latyshev 2 (Group X). Membership, phase-space structure, mass, and energy distributions". Astronomy and Astrophysics.
  7. (2022). "Extending the FIP bias sample to magnetically active stars. Challenging the FIP bias paradigm". Astronomy and Astrophysics.
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