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

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