BK Camelopardalis
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Camelopardalis |
| Right ascension | 03h 19m 59.27222s |
| Declination | +65° 39′ 08.2519″ |
| Apparent magnitude (V) | 4.74 (4.76 - 4.90) |
| Characteristics | |
| Evolutionary stage | main sequence |
| Spectral type | B2.5 Vne |
| U−B color index | −0.77 |
| B−V color index | −0.108±0.002 |
| R−I color index | −0.13 |
| Variable type | Be star |
| Astrometry | |
| Radial velocity (Rv) | −3.4±3.5 km/s |
| Proper motion (μ) | RA: +10.506 mas/yr Dec.: −14.677 mas/yr |
| Parallax (π) | 6.0704±0.3539 mas |
| Distance | 540 ± 30 ly (165 ± 10 pc) |
| Absolute magnitude (MV) | −2.07 |
| Details | |
| Mass | 7.5 M☉ |
| Radius | 4.0 R☉ |
| Luminosity | 1080.69 L☉ |
| Surface gravity (log g) | 4.20 cgs |
| Temperature | 18,720 K |
| Rotational velocity (v sin i) | 328 km/s |
| Age | 31.6 Myr |
| Other designations | |
| BK Cam, BD+65°340, HD 20336, HIP 15520, HR 985, SAO 12704 | |
| Database references | |
| SIMBAD | data |
BK Camelopardalis is a variable star in the northern circumpolar constellation of Camelopardalis, near the constellation border with Cassiopeia. It is visible to the naked eye as a faint, blue-white hued star with an apparent visual magnitude that fluctuates around 4.74. The star is located approximately 540 light years away from the Sun based on parallax. It is a proposed member of the Cassiopeia–Taurus group of co-moving stars.