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HD 26764

HD 26764
Location of HD 26764 on the map (circled)
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Camelopardalis
Right ascension 04h 16m 43.0917s[1]
Declination +53° 36′ 42.4808″[1]
Apparent magnitude (V) 5.19±0.01[2]
Characteristics
Evolutionary stage main sequence star[3]
Spectral type A2 Vn[4] or A1 Vn[5]
B−V color index +0.05[6]
Astrometry
Radial velocity (Rv)−3.0±3.1[7] km/s
Proper motion (μ) RA: −17.700 mas/yr[1]
Dec.: −0.218 mas/yr[1]
Parallax (π)12.2443 ± 0.1844 mas[1]
Distance266 ± 4 ly
(82 ± 1 pc)
Absolute magnitude (MV)+0.21[8]
Details
Mass2.74±0.08[3] M☉
Radius3.38±0.17[9] R☉
Luminosity94.1+13.7
−12[3] L☉
Surface gravity (log g)3.79±0.07[10] cgs
Temperature9,825±334[11] K
Metallicity [Fe/H]−0.70[12] dex
Rotational velocity (v sin i)205[13][14] km/s
Age388[11] Myr
Other designations
14 H. Camelopardalis,[15] AG+53°373, BD+53°750, FK5 2310, GC 5132, HD 26764, HIP 19949, HR 1314, SAO 24512[16]
Database references
SIMBADdata

HD 26764, also known as HR 1314 or rarely 14 H. Camelopardalis, is a solitary white hued star[17] located in the northern circumpolar constellation Camelopardalis. It has an apparent magnitude of 5.19, making it faintly to the naked eye if viewed under good conditions. Gaia DR3 parallax measurements place the object at a distance of 266 light years[1] and is drifting closer with a poorly constrained heliocentric radial velocity of 3 km/s.[7] At its current distance, HD 26764's brightness is diminished by 0.26 magnitudes due to interstellar dust.[18]

HD 26764 has a stellar classification of either A2 Vn or A1 Vn.[4][5] Both classes indicate that the object is an A-type main-sequence star with broad (nebulous) absorption lines due to rapid rotation. At present it has 2.74 times the mass of the Sun[3] and 3.4 times the Sun's radius.[9] It radiates 94 times the luminosity of the Sun[3] from its photosphere at an effective temperature of 9,825 K.[11] At the age of 388 million years,[11] HD 26764 is a rather evolved dwarf star, having completed 91.2% of its main sequence lifetime.[3] Like many hot stars, it spins rapidly with a projected rotational velocity of 205 km/s.[13][14] An X-ray emission with a luminosity of 498.5×1020 W has been detected around the star. A-type stars are not expected to produce X-rays, so it must be coming from an unseen companion.[19]

  1. ^ a b c d e Cite error: The named reference EDR3 was invoked but never defined (see the help page).
  2. ^ Cite error: The named reference Tycho2000 was invoked but never defined (see the help page).
  3. ^ a b c d e f Cite error: The named reference Zorec2012 was invoked but never defined (see the help page).
  4. ^ a b Cite error: The named reference Cowley1969 was invoked but never defined (see the help page).
  5. ^ a b Cite error: The named reference Abt1995 was invoked but never defined (see the help page).
  6. ^ Cite error: The named reference Haggkvist1966 was invoked but never defined (see the help page).
  7. ^ a b Cite error: The named reference Gontcharov2006 was invoked but never defined (see the help page).
  8. ^ Cite error: The named reference Anderson2012 was invoked but never defined (see the help page).
  9. ^ a b Cite error: The named reference Kervella2004 was invoked but never defined (see the help page).
  10. ^ Cite error: The named reference Stassun2019 was invoked but never defined (see the help page).
  11. ^ a b c d Cite error: The named reference David2015 was invoked but never defined (see the help page).
  12. ^ Cite error: The named reference Gerban2016 was invoked but never defined (see the help page).
  13. ^ a b Cite error: The named reference Huang1953 was invoked but never defined (see the help page).
  14. ^ a b Cite error: The named reference Palmer1968 was invoked but never defined (see the help page).
  15. ^ Cite error: The named reference Verbunt2010 was invoked but never defined (see the help page).
  16. ^ Cite error: The named reference SIMBAD was invoked but never defined (see the help page).
  17. ^ Cite error: The named reference Eggleton2008 was invoked but never defined (see the help page).
  18. ^ Cite error: The named reference Gontcharov2017 was invoked but never defined (see the help page).
  19. ^ Cite error: The named reference Schröder2007 was invoked but never defined (see the help page).
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