HD 49878

HD 49878 is a single^[10] star in the northern circumpolar constellation of Camelopardalis. It has an orange hue and is faintly visible to the naked eye with an apparent visual magnitude of +4.55.^[3] The star is located at a distance of approximately 191 light years from the Sun, as determined from its parallax.^[2] It is drifting closer with a radial velocity of −29.5 km/s.^[5] The star has been listed as a candidate member of the Wolf 630 moving group, but is most likely a field star.^[11]

HD 49878

Observation data Epoch J2000      Equinox J2000
Constellation	Camelopardalis[1]
Right ascension	07h 00m 04.0372s[2]
Declination	+76° 58′ 38.671″[2]
Apparent magnitude (V)	+4.551[3]
Characteristics
Spectral type	K4 III[4]
B−V color index	1.399[3]
Astrometry
Radial velocity (Rv)	−29.47±0.19[5] km/s
Proper motion (μ)	RA: 72.948(83) mas/yr[2] Dec.: −13.442(109) mas/yr[2]
Parallax (π)	17.0753±0.1093 mas[2]
Distance	191 ± 1 ly (58.6 ± 0.4 pc)
Absolute magnitude (MV)	0.80[1]
Details
Mass	1.239±0.217[6] M☉
Radius	18.68+0.34 −0.79[7] R☉
Luminosity	94.2±1.5[7] L☉
Surface gravity (log g)	2.11[3] cgs
Temperature	4,160+91 −38[7] K
Metallicity [Fe/H]	0.05[3] dex
Rotational velocity (v sin i)	1.4[8] km/s
Age	4.817±2.347[6] Gyr
Other designations
BD+77°266, FK5 260, GC 9073, HD 49878, HIP 33694, HR 2527, SAO 6022,[9]
Database references
SIMBAD	data

This is an aging giant star with a stellar classification of K4 III,^[4] having exhausted the supply of hydrogen at its core and expanded to 19 times the Sun's radius.^[7] It is roughly 5 billion years old with 1.24 times the mass of the Sun.^[6] The star is radiating 94 times the luminosity of the Sun from its enlarged photosphere at an effective temperature of 4,160 K.^[7] It is spinning slowly with a projected rotational velocity of 1.4 km/s.^[8]