15 Camelopardalis

15 Camelopardalis is a triple star^[5] system in the northern circumpolar constellation of Camelopardalis. It has the variable star designation DV Camelopardalis; 15 Camelopardalis is the Flamsteed designation. This is just visible to the naked eye as a dim, blue-white hued star with a baseline apparent visual magnitude of 6.13.^[3] It is a probable (99%) member of the Cas-Tau OB association.^[5]

15 Camelopardalis

A Hipparcos light curve for DV Camelopardalis, adapted from Bakiş et al. (2011)[1]
Observation data Epoch J2000.0      Equinox J2000.0
Constellation	Camelopardalis
Right ascension	05h 19m 27.85996s[2]
Declination	+58° 07′ 02.5203″[2]
Apparent magnitude (V)	6.13[3]
Characteristics
Spectral type	B5 V[4]
B−V color index	−0.031±0.005[3]
Variable type	Algol,[5] SPB[6]
Astrometry
Radial velocity (Rv)	6.7±3.7[3] km/s
Proper motion (μ)	RA: +5.558[2] mas/yr Dec.: −18.832[2] mas/yr
Parallax (π)	3.1406±0.0571 mas[2]
Distance	1,040 ± 20 ly (318 ± 6 pc)
Absolute magnitude (MV)	−0.74[3]
Orbit[5]
Period (P)	6.6784±0.0010 d
Eccentricity (e)	~0.48
Details
Luminosity	220.01[3] L☉
Other designations
15 Cam, DV Cam, BD+57°874, HD 34233, HIP 24836, HR 1719, SAO 25125[7]
Database references
SIMBAD	data

This system includes a double-lined spectroscopic binary with an orbital period of 6.7 days and a large eccentricity of around 0.48, plus a third component in a wider orbit. The close pair consist of a very slowly rotating helium-weak star plus an ordinary mid-B-type star with a more rapid rotation rate.^[6] When the Hipparcos data was analyzed, it was discovered that together they form an Algol-type eclipsing binary with a depth of about 0.2 magnitude.^[5][8] The third component is a slowly pulsating B-type star.^[6]