23 Camelopardalis

23 Camelopardalis is a star in the northern circumpolar constellation of Camelopardalis, located 433 light years away from the Sun.^[1] It is just visible to the naked eye as a dim, yellow-hued star with an apparent visual magnitude of 6.17.^[2] The object is moving closer to the Sun with a heliocentric radial velocity of −2.5 km/s.^[1]

23 Camelopardalis

Observation data Epoch J2000.0      Equinox J2000.0
Constellation	Camelopardalis
Right ascension	05h 44m 08.44597s[1]
Declination	+61° 28′ 35.5255″[1]
Apparent magnitude (V)	6.168[2]
Characteristics
Evolutionary stage	red clump[3]
Spectral type	G5 III:[2]
B−V color index	0.881[2]
Astrometry
Radial velocity (Rv)	−2.47±0.17[1] km/s
Proper motion (μ)	RA: −11.312[1] mas/yr Dec.: +0.766[1] mas/yr
Parallax (π)	7.5250±0.0371 mas[1]
Distance	433 ± 2 ly (132.9 ± 0.7 pc)
Absolute magnitude (MV)	0.95[4]
Details
Mass	2.13[2] M☉
Radius	9.84[1] R☉
Luminosity	60.255[1] L☉
Surface gravity (log g)	3.15±0.18[5] cgs
Temperature	5,183±51[5] K
Metallicity [Fe/H]	−0.01±0.05[5] dex
Age	1.50[2] Gyr
Other designations
23 Cam, BD+61°816, HD 37638, HIP 27046, HR 1943, SAO 13590[6]
Database references
SIMBAD	data

With a stellar classification of G5 III:,^[2] 23 Camelopardalis appears to be an aging giant star that has exhausted the hydrogen at its core and evolved away from the main sequence, although the ':' denotes some uncertainty about the classification. It is a red clump giant,^[3] which indicates it is on the horizontal branch and is generating energy through helium fusion at its core. The star is 1.5^[2] billion years old with more than double^[2] the mass of the Sun and almost 10^[1] times the Sun's radius. It is radiating 60^[1] times the Sun's luminosity from its enlarged photosphere at an effective temperature of 5,183 K.^[5]