W Coronae Borealis
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| 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 | |
| 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
[edit]- ^ "Download Data". aavso.org. AAVSO. Retrieved 1 October 2021.
- ^ a b c d e 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.
- ^ a b c 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.
- ^ "W Coronae Borealis". SIMBAD Astronomical Database. Centre de Données astronomiques de Strasbourg. Retrieved 9 March 2015.
- ^ VSX (4 January 2010). "W Coronae Borealis". AAVSO Website. American Association of Variable Star Observers. Retrieved 9 March 2015.
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