7 Camelopardalis

7 Camelopardalis

7 Camelopardalis
Observation data Epoch J2000      Equinox J2000
Constellation	Camelopardalis
Right ascension	04h 57m 17.1966s
Declination	+53° 45′ 07.564″
Apparent magnitude (V)	4.452
Characteristics
Spectral type	A1Va/A1IV
U−B color index	−0.01
B−V color index	−0.02
R−I color index	−0.01
Astrometry
Radial velocity (Rv)	−7.9 km/s
Proper motion (μ)	RA: −24.17 mas/yr Dec.: 7.53 mas/yr
Parallax (π)	8.68 ± 0.81 mas
Distance	380 ± 40 ly (120 ± 10 pc)
Absolute magnitude (MV)	-0.88
Details
Mass	3.9 M☉
Radius	5.37 R☉
Luminosity	195 L☉
Temperature	9,400K K
Rotation	45 km/s 0,00727379 Year
Orbit
Companion	CCDM 04573+5345 B D 5
Period (P)	284 yr
Semi-major axis (a)	0.78″
Eccentricity (e)	0.74
Inclination (i)	137.9°
Longitude of the node (Ω)	158.2°
Periastron epoch (T)	1986
Orbit
Companion	CCDM 04573+5345 C STF 610
Semi-major axis (a)	25.8″
Inclination (i)	240°
Other designations
HR 1568, HD 31278, BD+53° 829, HIP 23040, SAO 24929, GC 6017, ADS 3536, CCDM 04573+5345.
Database references
SIMBAD	data
Data sources:
Hipparcos Catalogue, CCDM (2002), Bright Star Catalogue (5th rev. ed.)
Database references
SIMBAD	data

7 Camelopardalis is a triple star system in the constellation Camelopardalis. It is approximately 376 light years from Earth.

The primary component, 7 Camelopardalis A, is a white A-type main sequence dwarf with an apparent magnitude of +4.43. Orbiting the primary with a period of 284 years is 7 Camelopardalis B, a magnitude +7.8 star which is only 0.78 arcseconds from the primary. The third component, 7 Camelopardalis C, is an eleventh magnitude star 26 arcseconds distant.

Components

NAME	Right ascension	Declination	Apparent magnitude (V)	Spectral type	Database references
ADS 3536 B (BD+53 829C)	04h 57m 14.6s	+53° 44' 53	11.3		Simbad

References

• HR 1568
• CCDM J04573+5345
• Image 7 Camelopardalis