Observation data Epoch J2000 Equinox J2000 | |
---|---|
Constellation | Camelopardalis |
Right ascension | 07h 01m 21.41899s[1] |
Declination | +70° 48′ 29.8635″[1] |
Apparent magnitude (V) | 5.69±0.01[2] |
Characteristics | |
Evolutionary stage | red giant branch[3] |
Spectral type | K4 III[4] |
U−B color index | +1.52[2] |
B−V color index | +1.34[2] |
Astrometry | |
Radial velocity (Rv) | −17.8±0.2[5] km/s |
Proper motion (μ) | RA: +13.101 mas/yr[1] Dec.: −15.749 mas/yr[1] |
Parallax (π) | 6.3572 ± 0.0481 mas[1] |
Distance | 513 ± 4 ly (157 ± 1 pc) |
Absolute magnitude (MV) | −0.27[6] |
Details | |
Mass | 1.32±0.82[7] M☉ |
Radius | 30.43[8] R☉ |
Luminosity | 203±3[1] L☉ |
Surface gravity (log g) | 1.99[9] cgs |
Temperature | 4,396±122[10] K |
Metallicity [Fe/H] | +0.01[9] dex |
Age | 292[1] Myr |
Other designations | |
Database references | |
SIMBAD | data |
HD 50885, also known as HR 2581, is a star located in the northern circumpolar constellation Camelopardalis, the giraffe. It has an apparent magnitude of 5.69,[2] making it faintly visible to the naked eye if viewed under ideal conditions. Based on parallax measurements from Gaia DR3, the object is estimated to be 513 light years distant.[1] It appears to be approaching the Solar System with a heliocentric radial velocity of −17.8 km/s.[5]
This is a solitary,[12] evolved red giant star with a stellar classification of K4 III.[4] It is currently on the red giant branch,[3] fusing a hydrogen shell around an inert helium core. It has 1.32 times the mass of the Sun[7] but has expanded to 30.4 times its girth.[8] It radiates 203 times the luminosity of the Sun[1] from its photosphere at an effective temperature of 4,396 K.[10] HD 50885 has an iron abundance only 102% that of the Sun, placing it at solar metallicity.[9]
There is an optical companion located 119″ away along a position angle of 357°.[13] This object was first noticed by Robert S. Ball in 1879[14]