W Coronae Borealis

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W Coronae Borealis
WCrBLightCurve.png
The visual band light curve of W Coronae Borealis, from AAVSO data [1]
Observation data
Epoch J2000       Equinox J2000
Constellation Corona Borealis
Right ascension 16h 15m 24.549s [2]
Declination +37° 47′ 44.21″ [2]
Apparent magnitude  (V)7.8 - 14.3 [3]
Characteristics
Evolutionary stage asymptotic giant branch
Spectral type M2e-M5e [3]
Variable type mira [3]
Astrometry
Proper motion (μ)RA: −9.527 [2] mas/yr
Dec.: -6.275 [2] mas/yr
Parallax (π)0.4201±0.0447  mas [2]
Distance approx. 7,800  ly
(approx. 2,400  pc)
Other designations
HD  146560 [4]
Database references
SIMBAD data

W Coronae Borealis (W CrB) is a Mira-type long period variable star in the constellation Corona Borealis. Its apparent magnitude varies between 7.8 and 14.3 over a period of 238 days. [5]

References

  1. ↑ "Download Data". aavso.org. AAVSO. Retrieved 1 October 2021.
  2. 1 2 3 4 5 Brown, A. G. A.; et al. (Gaia collaboration) (2021). "Gaia Early Data Release 3: Summary of the contents and survey properties". Astronomy & Astrophysics . 649: A1. arXiv: 2012.01533 . Bibcode:2021A&A...649A...1G. doi: 10.1051/0004-6361/202039657 . S2CID   227254300. (Erratum:  doi:10.1051/0004-6361/202039657e). Gaia EDR3 record for this source at VizieR .
  3. 1 2 3 Samus, N. N.; Durlevich, O. V.; et al. (2009). "VizieR Online Data Catalog: General Catalogue of Variable Stars (Samus+ 2007-2013)". VizieR On-line Data Catalog: B/GCVS. Originally Published in: 2009yCat....102025S. 1: B/GCVS. Bibcode:2009yCat....102025S.
  4. ↑ "W Coronae Borealis". SIMBAD Astronomical Database. Centre de Données astronomiques de Strasbourg. Retrieved 9 March 2015.
  5. ↑ VSX (4 January 2010). "W Coronae Borealis". AAVSO Website. American Association of Variable Star Observers . Retrieved 9 March 2015.
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