BK Camelopardalis

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BK Camelopardalis
Observation data
Epoch J2000      Equinox J2000
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 8.1 M
Radius 4.7 R
Luminosity 4,980 L
Temperature 21,300 K
Rotational velocity (v sin i) 351 km/s
Other designations
BD+65° 340, HD 20336, HIP 15520, HR 985, SAO 12704.
Database references
SIMBAD data
Data sources:
Hipparcos Catalogue,
CCDM (2002),
Bright Star Catalogue (5th rev. ed.)
Database references
SIMBAD data

BK Camelopardalis is a variable star in the Camelopardalis.

Chinese name[edit]

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]

References[edit]

  1. ^ (Chinese) 中國星座神話, written by 陳久金. Published by 台灣書房出版有限公司, 2005, ISBN 978-986-7332-25-7.
  2. ^ (Chinese) http://zh.wikipedia.org/wiki/%E9%B9%BF%E8%B1%B9%E5%BA%A7
  3. ^ English-Chinese Glossary of Chinese Star Regions, Asterisms and Star Name, Hong Kong Space Museum. Accessed on line November 23, 2010.
  4. ^ Richard Hinckley Allen: Star Names — Their Lore and Meaning: Camelopardalis