Beta Equulei

β Equulei

Observation data Epoch J2000.0      Equinox J2000.0 (ICRS)
Constellation	Equuleus
Right ascension	21^h 22^m 53.6127^s[1]
Declination	+06° 48′ 40.106″[1]
Apparent magnitude (V)	5.159[1]
Characteristics
Spectral type	A3V[1]
U−B color index	+0.07[2]
B−V color index	+0.05[2]
Astrometry
Radial velocity (Rv)	−11.1 ± 0.9[1] km/s
Proper motion (μ)	RA: 52.66[1] mas/yr Dec.: 11.15[1] mas/yr
Parallax (π)	9.06 ± 0.88[1] mas
Distance	360 ± 30 ly (110 ± 10 pc)
Absolute magnitude (MV)	−0.1[3]
Details
Radius	1.5[4] R☉
Rotational velocity (v sin i)	78[2] km/s
Other designations
β Equ, Beta Equulei, Beta Equ, 10 Equulei, 10 Equ, BD+06 4811, HD 203562, HIP 105570, HR 8178, SAO 126749, WDS 21229+0649A.[1]
Database references
SIMBAD	data

Beta Equulei (Beta Equ, β Equulei, β Equ) is an A-type main sequence star in the constellation of Equuleus.^[2] It has an overall apparent visual magnitude of approximately 5.159.^[1]

β Equulei has four optical visual companions. They are not physically related to the star described above.^[2]

References

1. * bet Equ -- Star in double system, database entry, SIMBAD. Accessed on line September 10, 2008.
2. HR 8178, database entry, The Bright Star Catalogue, 5th Revised Ed. (Preliminary Version), D. Hoffleit and W. H. Warren, Jr., CDS ID V/50. Accessed on line September 10, 2008.
3. From apparent magnitude and parallax.
4. HD 203562, database entry, Catalog of Apparent Diameters and Absolute Radii of Stars (CADARS), 3rd edition, L. E. Pasinetti-Fracassini, L. Pastori, S. Covino, and A. Pozzi, CDS ID II/224. Accessed on line September 10, 2008.