HD 36187

HD 36187
Location of HD 36187 (circled)
Observation data
Epoch J2000.0      Equinox J2000.0 (ICRS)
Constellation Columba
Right ascension 05h 28m 15.33500s[1]
Declination −37° 13′ 50.7477″[1]
Apparent magnitude (V) 5.55±0.01[2]
Characteristics
Evolutionary stage main sequence star[3]
Spectral type A1 V[4][5]
B−V color index +0.02[6]
Astrometry
Radial velocity (Rv)50±2[7] km/s
Proper motion (μ) RA: +10.887 mas/yr[1]
Dec.: +68.709 mas/yr[1]
Parallax (π)11.5707 ± 0.0576 mas[1]
Distance282 ± 1 ly
(86.4 ± 0.4 pc)
Absolute magnitude (MV)+0.84[8]
Details
Mass2.3+0.15
−0.12[9] M☉
Radius2.43±0.12[10] R☉
Luminosity48±2[3] L☉
Surface gravity (log g)4.10±0.14[9] cgs
Temperature9,513±21[11] K
Metallicity [Fe/H]−0.16[12] dex
Rotational velocity (v sin i)145[13] km/s
Age311+83
−149[9] Myr
Other designations
20 G. Columbae[14], CD−37°2220, CPD−37°692, GC 6774, HD 36187, HIP 25608, HR 1835, SAO 195887[15]
Database references
SIMBADdata

HD 36187, also known as HR 1835, is a solitary,[16] bluish-white hued star located in the southern constellation Columba, the dove. It has an apparent magnitude of 5.55,[2] making it faintly visible to the naked eye under ideal conditions. Based on parallax measurements from the Gaia spacecraft, it is estimated to be 282 light years away from the Solar System.[1] However, it is receding rapidly with a heliocentric radial velocity of 50 km/s.[7] At its current distance, HD 36187's brightness is diminished by 0.21 magnitude due to interstellar dust.[17]

HD 36187 has a stellar classification of either A1 V[4][5] or A0 V,[18] depending on the source. Nevertheless, both classes indicate that it is an ordinary A-type main-sequence star that is fusing hydrogen in its core. It has double the mass[9] and radius of the Sun.[10] It radiates 48 times the luminosity of the Sun[3] from its photosphere at an effective temperature of 9,512 K.[11] HD 36187 is estimated to be 311 million years old,[9] having completed 66.9% of its main sequence lifetime.[3] Like many hot stars HR 1835 spins rapidly, having a projected rotational velocity of 145 km/s.[13]

  1. ^ a b c d e 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 c d Cite error: The named reference Zorec2012 was invoked but never defined (see the help page).
  4. ^ a b Cite error: The named reference Cucchiaro1978 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 Johnson1966 was invoked but never defined (see the help page).
  7. ^ a b Cite error: The named reference Kharchenko2007 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 c d e Cite error: The named reference David2015 was invoked but never defined (see the help page).
  10. ^ a b Cite error: The named reference Kervella2004 was invoked but never defined (see the help page).
  11. ^ a b Cite error: The named reference Paunzen2006 was invoked but never defined (see the help page).
  12. ^ Cite error: The named reference starhorse was invoked but never defined (see the help page).
  13. ^ a b Cite error: The named reference Royer2002 was invoked but never defined (see the help page).
  14. ^ Cite error: The named reference Gould1879 was invoked but never defined (see the help page).
  15. ^ Cite error: The named reference SIMBAD was invoked but never defined (see the help page).
  16. ^ Cite error: The named reference Eggleton2008 was invoked but never defined (see the help page).
  17. ^ Cite error: The named reference Gontcharov2017 was invoked but never defined (see the help page).
  18. ^ Cite error: The named reference Houk1982 was invoked but never defined (see the help page).