12 Camelopardalis

12 Camelopardalis

Observation data Epoch J2000.0      Equinox J2000.0
Constellation	Camelopardalis
Right ascension	05^h06^m12.2^s
Declination	+59°01′16″
Apparent magnitude (V)	+6.08
Absolute magnitude (V)	-0.34
Distance	625 ± 110 ly (192 ± 34 pc)
Spectral type	K0III
Other designations
BM Camelopardalis, HR 1623, HD 32357, BD+58°805, HIP 23743, SAO 25003, GC 6197, BDS 2480, CCDM 05062+5900

12 Camelopardalis is a spectroscopic binary^[1] in the constellation Camelopardalis. It also forms a double star with 11 Camelopardalis, which is only 3 arcminutes away.

12 Camelopardalis is classified as an orange K-type giant with a mean apparent magnitude of +6.08. The binary is an RS Canum Venaticorum type variable star and its brightness varies by 0.14 magnitudes with a period of 82.8 days. The orbital period of the binary is 80.174 days. 12 Camelopardalis is approximately 625 light years from Earth.

X-ray source

BM Cam also emits X-rays and is the designated X-ray source 1H 0501+592.^[2] It has been detected by HEAO 1, the Einstein Observatory, and ROSAT.

References

1. Pourbaix D.; Tokovinin AA; Batten AH; Fekel FC; Hartkopf WI; Levato H; et al. (Sep 2004). "S_B⁹: The ninth cataloque of spectroscopic binary orbits". Astron Astrophys 424 (2): 727–732. arXiv:astro-ph/0406573. Bibcode:2004A&A...424..727P. doi:10.1051/0004-6361:20041213.
2. Wood KS; Meekins JF; Yentis DJ; Smathers HW; McNutt DP; Bleach RD (Dec 1984). "The HEAO A-1 X-ray source catalog". Ap J Suppl Ser 56 (12): 507–649. Bibcode:1984ApJS...56..507W. doi:10.1086/190992.