V394 Aurigae Explained

V394 Aurigae is a semi-regular variable star in the constellation Auriga. Its brightness varies between magnitudes 6.01 and 6.11,[1] so it is faintly visible to the naked eye under ideal observing conditions. Located around 730 light-years distant, V394 Aurigae shines with a luminosity approximately 1075 times that of the Sun and has a surface temperature of 3589 K.[2]

In 1991, Leroy F. Snyder discovered that the star, then called HR 2146, is a variable star.[3] It was given its variable star designation, V394 Aurigae, in 1993.[4] Koen and Eyer found that the star's brightness, as seen by Hipparcos, varies with a period of 3.9 days.[5]

It is a double star: the secondary, designated V394 Aurigae B, is an eleventh-magnitude star with a separation of 10 arcseconds.[6]

Notes and References

  1. Web site: V394 Aurigae . Watson, Christopher . 4 January 2010 . The International Variable Star Index. American Association of Variable Star Observers. 14 August 2015.
  2. McDonald, I.. Zijlstra, A. A.. Boyer, M. L.. 2012. Fundamental Parameters and Infrared Excesses of Hipparcos Stars. Monthly Notices of the Royal Astronomical Society. 427. 1. 343–57. 2012MNRAS.427..343M. 1208.2037 . 10.1111/j.1365-2966.2012.21873.x . free . 118665352.
  3. Snyder . L. F. . HR 2146 A New Variable in Auriga . Information Bulletin on Variable Stars . July 1991 . 3632 . 1991IBVS.3632....1S . 1 December 2024.
  4. Kazarovets . E. V. . Samus . N. N. . Goranskij . V. P. . The 71st Name-List of Variable Stars . Information Bulletin on Variable Stars . February 1993 . 3840 . 1-27 . 1993IBVS.3840....1K . 1 December 2024.
  5. Koen . Chris . Eyer . Laurent . New periodic variables from the Hipparcos epoch photometry . Monthly Notices of the Royal Astronomical Society . March 2002 . 331 . 1 . 45–59 . 10.1046/j.1365-8711.2002.05150.x . free . astro-ph/0112194 . 2002MNRAS.331...45K . 10505995 .
  6. Dommanget . J. . Nys . O. . CCDM (Catalog of Components of Double & Multiple stars) (Dommanget+ 2002) . VizieR On-line Data Catalog: I/274. Originally Published in: Observations et Travaux 54 . 1274 . 2002 . 2002yCat.1274....0D. Vizier catalog entry

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