Observation data Epoch J2000 Equinox J2000 |
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Constellation | Camelopardalis |
Right ascension | 03h 19m 59.2727s |
Declination | +65° 39′ 08.253″ |
Apparent magnitude (V) | 4.728 |
Characteristics | |
Spectral type | B2.5Vne |
U−B color index | -0.77 |
B−V color index | -0.15 |
R−I color index | -0.13 |
Variable type | Gamma Cassiopeiae variable |
Astrometry | |
Radial velocity (Rv) | -3.4 km/s |
Proper motion (μ) | RA: 11.27 mas/yr Dec.: -14.32 mas/yr |
Parallax (π) | 4.07 ± 0.62 mas |
Distance | approx. 800 ly (approx. 250 pc) |
Absolute magnitude (MV) | -2.26 |
Details | |
Mass | 18 M☉ |
Radius | 7 R☉ |
Luminosity | 20,000 L☉ |
Temperature | 10,000–30,000 K |
Rotational velocity (v sin i) | 351 km/s |
Other designations | |
Database references | |
SIMBAD | data |
Data sources: | |
Hipparcos Catalogue, CCDM (2002), Bright Star Catalogue (5th rev. ed.) |
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Database references | |
SIMBAD | data |
BK Camelopardalis is a variable star in the Camelopardalis.
In Chinese, 紫微右垣 (Zǐ Wēi Yòu Yuán), meaning Right Wall of Purple Forbidden Enclosure, refers to an asterism consisting of BK Camelopardalis, α Draconis, κ Draconis, λ Draconis, 24 Ursae Majoris, 43 Camelopardalis and α Camelopardalis.[1] Consequently, BK Camelopardalis itself is known as 紫微右垣七 (Zǐ Wēi Yòu Yuán qī, English: the Seventh Star of Right Wall of Purple Forbidden Enclosure.) [2], representing 上丞 (Shǎngchéng), meaning First Prime Minister[3]. 上丞 (Shǎngchéng) is westernized in Shang Ching by R.H. Allen, the meaning is "Higher Minister", but it is not cleared designation[4].
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