BN Camelopardalis

BN Camelopardalis

Observation data Epoch J2000      Equinox J2000
Constellation	Camelopardalis
Right ascension	05^h 12^m 22.45292^s
Declination	+73° 56′ 48.0423″
Apparent magnitude (V)	5.45
Characteristics
Spectral type	B9.5pSi
U−B color index	–0.35
B−V color index	–0.13
Astrometry
Radial velocity (Rv)	9.3±2 km/s
Proper motion (μ)	RA: +1.45±0.33 mas/yr Dec.: –26.90±0.46 mas/yr
Parallax (π)	8.63 ± 0.47 mas
Distance	380 ± 20 ly (116 ± 6 pc)
Absolute magnitude (MV)	+0.05[1]
Details
Mass	3.08 ± 0.13[1] M☉
Radius	2.9 ± 0.4[1] R☉
Luminosity	126[1] L☉
Surface gravity (log g)	4.15 ± 0.11[1] cgs
Temperature	11,455[1] K
Rotation	2.73332 days[1]
Other designations
BD+73 274, FK5 2387, HD 32650, HIP 24254, HR 1643, SAO 5455.
Database references
SIMBAD	data
Data sources:
Hipparcos Catalogue, CCDM (2002), Bright Star Catalogue (5th rev. ed.)

BN Camelopardalis is a Alpha² Canum Venaticorum variable star in the constellation Camelopardalis. It has an apparent magnitude of 5.3, varying by 0.05 of a magnitude.^[2]

References

1. North, P. (June 1998), "Do SI stars undergo any rotational braking?", Astronomy and Astrophysics, 334: 181–187, arXiv:astro-ph/9802286, Bibcode:1998A&A...334..181N
2. Watson, Christopher (4 January 2010). "BN Camelopardalis". The International Variable Star Index. American Association of Variable Star Observers. Retrieved 26 May 2015.