24 Camelopardalis

24 Camelopardalis is a star in the northern circumpolar constellation of Camelopardalis,[5] located 192 light years away from the Sun.[1] It is near the lower limit of visibility to the naked eye, appearing as a dim, orange-hued star with an apparent visual magnitude of 6.05.[2] This object is moving closer to the Earth with a heliocentric radial velocity of −31 km/s.[1]

24 Camelopardalis

Observation data Epoch J2000.0      Equinox J2000.0
Constellation	Camelopardalis
Right ascension	05^h 43^m 01.67384^s[1]
Declination	+56° 34′ 53.4884″[1]
Apparent magnitude (V)	6.05[2]
Characteristics
Spectral type	K0 III[3]
B−V color index	0.951±0.001[2]
Astrometry
Radial velocity (Rv)	−31.34±0.16[1] km/s
Proper motion (μ)	RA: +15.621[1] mas/yr Dec.: +28.509[1] mas/yr
Parallax (π)	16.9727 ± 0.0716[1] mas
Distance	192.2 ± 0.8 ly (58.9 ± 0.2 pc)
Absolute magnitude (MV)	2.19[2]
Details[4]
Mass	1.55±0.22 M☉
Radius	5.07±0.19 R☉
Luminosity	13.8+1.0 −0.9 L☉
Surface gravity (log g)	3.22 cgs
Temperature	4,931 K
Metallicity [Fe/H]	0.14 dex
Rotational velocity (v sin i)	1.8 km/s
Age	2.5+0.6 −0.4 Gyr
Other designations
24 Cam, BD+56°1050, HD 37601, HIP 26942, HR 1941, SAO 25333[5]
Database references
SIMBAD	data

The stellar classification of this star is K0 III,[3] matching an evolved giant star that has exhausted the hydrogen at its core and expanded. It is 2.5 billion years old with 1.6 times the mass of the Sun and has grown to five times the Sun's radius. The star is radiating 14 times the luminosity of the Sun from its enlarged photosphere at an effective temperature of 4,931 K.[4]

References

1. Brown, A. G. A.; et al. (Gaia collaboration) (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics. 616. A1. arXiv:1804.09365. Bibcode:2018A&A...616A...1G. doi:10.1051/0004-6361/201833051. Gaia DR2 record for this source at VizieR.
2. Anderson, E.; Francis, Ch. (2012), "XHIP: An extended hipparcos compilation", Astronomy Letters, 38 (5): 331, arXiv:1108.4971, Bibcode:2012AstL...38..331A, doi:10.1134/S1063773712050015.
3. Yoss, Kenneth M. (November 1961), "Spectral and Luminosity Classifications and Measurements of the Strength of Cyanogen Absorption for Late-Type Stars from Objective-Prism Spectra.", Astrophysical Journal, 134: 809, Bibcode:1961ApJ...134..809Y, doi:10.1086/147209
4. Brewer, John M.; et al. (2016), "Spectral Properties of Cool Stars: Extended Abundance Analysis of 1,617 Planet-Search Stars", The Astrophysical Journal Supplement Series, 225 (2): 32, arXiv:1606.07929, Bibcode:2016ApJS..225...32B, doi:10.3847/0067-0049/225/2/32.
5. "24 Cam". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2019-04-17.