HD 37289

HD 37289
Observation data
Epoch J2000.0      Equinox J2000.0 (ICRS)
Constellation Camelopardalis
Right ascension 05h 42m 26.44853s[1]
Declination +65° 41′ 51.5374″[1]
Apparent magnitude (V) 5.61±0.01[2]
Characteristics
Evolutionary stage red giant branch[1]
Spectral type K5 III[3]
B−V color index +1.24[4]
Astrometry
Radial velocity (Rv)−20.7±0.2[5] km/s
Proper motion (μ) RA: −0.243 mas/yr[1]
Dec.: −21.572 mas/yr[1]
Parallax (π)10.5949 ± 0.0594 mas[1]
Distance308 ± 2 ly
(94.4 ± 0.5 pc)
Absolute magnitude (MV)+1.01[6]
Details
Mass3.30±0.04[1] M☉
Radius13.57[7] R☉
Luminosity69.9[8] L☉
Surface gravity (log g)2.29[9] cgs
Temperature4,360±90[10] K
Metallicity [Fe/H]0.00[10] dex
Age293+27
−28[1] Myr
Other designations
AG+65°313, BD+65°485, FK5 2426, GC 7068, HD 37289, HIP 26882, HR 1916, SAO 13570
Database references
SIMBADdata

HD 37289, also known as HR 1916, is a solitary,[11] orange hued star located in the northern circumpolar constellation Camelopardalis. It has an apparent magnitude of 5.61,[2] making it faintly visible to the naked eye under ideal conditions. Based on parallax measurements from the Gaia spacecraft, the object is estimated to be 308 light years distant.[1] It appears to be approaching the Sun, having a heliocentric radial velocity of −20.7 km/s.[5]

HD 37289 has a stellar classification of K5 III,[3] indicating that it is an evolved red giant. Gaia DR3 stellar evolution models place it on the red giant branch.[1] This means that it is currently fusing a hydrogen shell around an inert helium core. At present it has 3.3 times the mass of the Sun and at the age of 293 million years,[1] it has expanded to a radius of 13.6 R☉.[7] It radiates at 70 times the luminosity of the Sun[8] from its enlarged photosphere at an effective temperature of 4,360 K.[10] HD 37289 has been calculated to have a metallicity approximately around solar level.[10]

  1. ^ a b c d e f g h i j Cite error: The named reference GaiaDR3 was invoked but never defined (see the help page).
  2. ^ a b Cite error: The named reference Tycho2000 was invoked but never defined (see the help page).
  3. ^ a b Cite error: The named reference Adams1935 was invoked but never defined (see the help page).
  4. ^ Cite error: The named reference Haggkvist1970 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 Kervella2021 was invoked but never defined (see the help page).
  8. ^ a b Cite error: The named reference GaiaDR2 was invoked but never defined (see the help page).
  9. ^ Cite error: The named reference Anders2019 was invoked but never defined (see the help page).
  10. ^ a b c d Cite error: The named reference Charbonnel2020 was invoked but never defined (see the help page).
  11. ^ Cite error: The named reference Eggleton2008 was invoked but never defined (see the help page).