82 Virginis Explained

82 Virginis, also known as m Virginis, is a star in the constellation Virgo. It is located 160abbr=inNaNabbr=in from Earth based on a parallax of from Gaia DR2. It is a red giant, based on its spectral type of M1III.[1] Its apparent magnitude is 5.01.[2]

Characteristics

82 Virginis is a red giant star, based on its spectral type of M1III, where M means that it is a M-type star and III is the luminosity class, meaning that it is a giant star. The star is 70.8 times larger than the Sun and 890 times more voluminous. The effective temperature of the star is of 3675K, which is 2197 degrees colder than the solar temperature of 5772 K. Its rotational velocity is of 2.3 km/s.[3] The angular diameter of the star, as measured from the CHARM survey, is of .[4] At the current distance, this would lead to a radius of, which is similar to the radius derived by Gaia DR2.

The parallax of the star is measured at from Gaia DR2, translating to a distance of 160lk=onNaNlk=on from Earth. The star is moving towards Earth at a velocity of 36.6 km/s. Its apparent magnitude is 5.01, making it visible to the naked eye.

References

  1. 82 Vir. 2024-05-01.
  2. Ghosh . Supriyo . Mondal . Soumen . Das . Ramkrishna . Khata . Dhrimadri . 2019-01-29 . Spectral Calibration of K$-$M Giants from medium resolution near-infrared HK-band spectra . Monthly Notices of the Royal Astronomical Society . 10.1093/mnras/stz299 . 1901.09170 . 0035-8711.
  3. Zamanov . R. K. . Bode . M. F. . Melo . C. H. F. . Stateva . I. K. . Bachev . R. . Gomboc . A. . Konstantinova-Antova . R. . Stoyanov . K. A. . 2008-10-11 . Rotational velocities of the giants in symbiotic stars: III. Evidence of fast rotation in S-type symbiotics . Monthly Notices of the Royal Astronomical Society . 390 . 1 . 377–382 . 10.1111/j.1365-2966.2008.13751.x. 0807.3817 . 2008MNRAS.390..377Z .
  4. Richichi . A. . Percheron . I. . 2002-05-01 . CHARM: A Catalog of High Angular Resolution Measurements . Astronomy and Astrophysics . 386 . 2 . 492–503 . 10.1051/0004-6361:20020236 . 2002A&A...386..492R . 0004-6361. 1887/7492 . free .