HD 68375

HD 68375
Observation data
Epoch J2000.0      Equinox J2000.0 (ICRS)
Constellation Camelopardalis
Right ascension 08h 19m 32.2891s[1]
Declination +75° 45′ 24.866″[1]
Apparent magnitude (V) 5.54±0.01[2]
Characteristics
Evolutionary stage Horizontal branch[3]
Spectral type G8 III[4]
B−V color index +0.9[5]
Astrometry
Radial velocity (Rv)4.33±0.16[6] km/s
Proper motion (μ) RA: +32.404 mas/yr[1]
Dec.: +15.893 mas/yr[1]
Parallax (π)11.2853 ± 0.0516 mas[1]
Distance289 ± 1 ly
(88.6 ± 0.4 pc)
Absolute magnitude (MV)+0.88[7]
Details
Mass1.91[8] M☉
Radius8.99[9] R☉
Luminosity49.4±0.5[10] L☉
Surface gravity (log g)2.77[11] cgs
Temperature5,078±5[9] K
Metallicity [Fe/H]−0.12±0.01[12] dex
Rotational velocity (v sin i)1.3±1.4[13] km/s
Age1.31[12] Gyr
Other designations
AG+75°385, BD+76°310, FK5 310, GC 11246, HD 68375, HIP 40793, HR 3216, SAO 6487[14]
Database references
SIMBADdata

HD 68375 (HR 3216) is a solitary[15] star in the northern circumpolar constellation Camelopardalis. It is faintly visible to the naked eye with an apparent magnitude of 5.54[2] and is estimated to be 289 light years distant.[1] However, it is receding with a heliocentric radial velocity of 4.33 km/s.[6]

HD 68375 has a stellar classification of G8 III,[4] indicating that it is a red giant. It is currently on the horizontal branch, generating energy via fusion inside a helium core. Specifically, it is a red clump star, at the cool end of the horizontal branch where stars with near-solar metallicity are found.[3] After approximately 1 billion years,[12] the star now has a radius of 9 R☉ and an effective temperature of 5,078 K,[9] giving a yellow hue. Nevertheless, it has nearly double the mass of the Sun[8] and radiates at 49 times the luminosity of the Sun[10] from its enlarged photosphere. HD 68375 is slightly metal deficient with a metallicity 76% that of the Sun[12] and spins with a poorly constrained projected rotational velocity of 1.3 km/s.[13]

  1. ^ a b c d e Cite error: The named reference EDR3 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 Ting2018 was invoked but never defined (see the help page).
  4. ^ a b Cite error: The named reference Cowley1979 was invoked but never defined (see the help page).
  5. ^ Cite error: The named reference Haggkvist1970 was invoked but never defined (see the help page).
  6. ^ a b Cite error: The named reference Soubrian2008 was invoked but never defined (see the help page).
  7. ^ Cite error: The named reference Anderson2012 was invoked but never defined (see the help page).
  8. ^ a b Cite error: The named reference Dermarque2004 was invoked but never defined (see the help page).
  9. ^ a b c Cite error: The named reference Stassun2019 was invoked but never defined (see the help page).
  10. ^ a b Cite error: The named reference GaiaDR2 was invoked but never defined (see the help page).
  11. ^ Cite error: The named reference A.P1999 was invoked but never defined (see the help page).
  12. ^ a b c d Cite error: The named reference Ting2019 was invoked but never defined (see the help page).
  13. ^ a b Cite error: The named reference deMed1999 was invoked but never defined (see the help page).
  14. ^ Cite error: The named reference SIMBAD was invoked but never defined (see the help page).
  15. ^ Cite error: The named reference Eggleton2008 was invoked but never defined (see the help page).