40 Camelopardalis

40 Camelopardalis is a single^[9] star in the northern circumpolar constellation of Camelopardalis,^[8] located around 600 light years distant from the Sun. It is visible to the naked eye as a faint, orange-hued star with an apparent visual magnitude of 5.37. This object is moving further from the Earth with a heliocentric radial velocity of +8.6 km/s.

40 Camelopardalis

Observation data Epoch J2000.0      Equinox J2000.0
Constellation	Camelopardalis
Right ascension	06h 15m 40.53673s[1]
Declination	+59° 59′ 56.2729″[1]
Apparent magnitude (V)	5.37[2]
Characteristics
Spectral type	K3 III[3]
B−V color index	1.339±0.006[2]
Astrometry
Radial velocity (Rv)	+8.56±0.29[4] km/s
Proper motion (μ)	RA: +26.588[1] mas/yr Dec.: −21.648[1] mas/yr
Parallax (π)	4.9142±0.1080 mas[1]
Distance	660 ± 10 ly (203 ± 4 pc)
Absolute magnitude (MV)	−0.52[2]
Details
Mass	1.6[5] M☉
Radius	33.4[6] R☉
Luminosity	384[6] L☉
Surface gravity (log g)	2.10[3] cgs
Temperature	4,423[5] K
Metallicity [Fe/H]	0.00[3] dex
Rotational velocity (v sin i)	2.2[7] km/s
Other designations
40 Cam, BD+60°938, GC 7949, HD 42633, HIP 29730, HR 2201, SAO 13772, WDS J06157+6000A[8]
Database references
SIMBAD	data

This is an aging giant star with a stellar classification of K3 III,^[3] having exhausted the hydrogen at its core and evolved away from the main sequence. It has expanded to 33 times the Sun's radius and is radiating 384 times the luminosity of the Sun from its enlarged photosphere at an effective temperature of 4,188 K.

There is a magnitude 11.50 optical companion, located at an angular separation of 104.20″ along a position angle of 355° from 40 Camelopardalis, as of 2010.^[10]