HD 50885

HD 50885
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]
Distance513 ± 4 ly
(157 ± 1 pc)
Absolute magnitude (MV)−0.27[6]
Details
Mass1.32±0.82[7] M☉
Radius30.43[8] R☉
Luminosity203±3[1] L☉
Surface gravity (log g)1.99[9] cgs
Temperature4,396±122[10] K
Metallicity [Fe/H]+0.01[9] dex
Age292[1] Myr
Other designations
AG+70°299, BD+70°430, GC 9152, HD 50885, HIP 33827, HR 2581, SAO 6041, WDS J07014+7049A[11]
Database references
SIMBADdata

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]

  1. ^ a b c d e f g h Cite error: The named reference GaiaDR3 was invoked but never defined (see the help page).
  2. ^ a b c d Cite error: The named reference Oja1991 was invoked but never defined (see the help page).
  3. ^ a b Cite error: The named reference Cardiel2021 was invoked but never defined (see the help page).
  4. ^ a b Cite error: The named reference Wilson1950 was invoked but never defined (see the help page).
  5. ^ a b Cite error: The named reference Famaey2005 was invoked but never defined (see the help page).
  6. ^ Cite error: The named reference Anderson2012 was invoked but never defined (see the help page).
  7. ^ a b Cite error: The named reference Charbonnel2020 was invoked but never defined (see the help page).
  8. ^ a b Cite error: The named reference Kervella2021 was invoked but never defined (see the help page).
  9. ^ a b c Cite error: The named reference Lomaeva2019 was invoked but never defined (see the help page).
  10. ^ a b Cite error: The named reference Stassun2019 was invoked but never defined (see the help page).
  11. ^ Cite error: The named reference SIMBAD was invoked but never defined (see the help page).
  12. ^ Cite error: The named reference Eggleton2008 was invoked but never defined (see the help page).
  13. ^ Cite error: The named reference Mason2001 was invoked but never defined (see the help page).
  14. ^ Cite error: The named reference Ball1884 was invoked but never defined (see the help page).