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]
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 | |
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] Together they form an Algol-type eclipsing binary with a depth of about 0.2 magnitude.[5] The third component is a slowly pulsating B-type star.[6]