W Coronae Borealis

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

^ "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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[aavso-1] "Download Data". aavso.org. AAVSO. Retrieved 1 October 2021.

[edr3-2] 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.

[gcvs-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.

[SIMBAD-4] "W Coronae Borealis". SIMBAD Astronomical Database. Centre de Données astronomiques de Strasbourg. Retrieved 9 March 2015.

[AAVSO-5] VSX (4 January 2010). "W Coronae Borealis". AAVSO Website. American Association of Variable Star Observers. Retrieved 9 March 2015.

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Observation data Epoch J2000 Equinox J2000
The visual band light curve of W Coronae Borealis, from AAVSO data^[1]
Constellation	Corona Borealis
Right ascension	16^h 15^m 24.549^s^[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