HD 10390

HD 10390
Location of HD 10390 on the map (circled)
Observation data
Epoch J2000.0      Equinox J2000.0 (ICRS)
Constellation Triangulum
Right ascension 01h 42m 03.48964s[1]
Declination +35° 14′ 44.5389″[1]
Apparent magnitude (V) 5.64[2]
Characteristics
Evolutionary stage main sequence star[3]
Spectral type B9 IV-V[4] or B9 V[5]
U−B color index −0.20[2]
B−V color index −0.07[2]
Astrometry
Radial velocity (Rv)−1.9±2.0[6] km/s
Proper motion (μ) RA: +48.763 mas/yr[1]
Dec.: −25.418 mas/yr[1]
Parallax (π)11.1882 ± 0.164 mas[1]
Distance292 ± 4 ly
(89 ± 1 pc)
Absolute magnitude (MV)+1.00[7]
Details
Mass2.62[8] M☉
Radius2.14±0.11[9] R☉
Luminosity51.5+2.4
−2.3[3] L☉
Surface gravity (log g)4.23+0.08
−0.04[10] cgs
Temperature11,076±139[11] K
Metallicity [Fe/H]−0.20[12] dex
Rotational velocity (v sin i)45[13] km/s
Age50+81
−31[14] Myr
Other designations
6 H. Trianguli,[15] AG+34°163, BD+34°297, FK5 1047, GC 2064, HD 10390, HIP 7943, HR 490, SAO 54912, TIC 61524043[16]
Database references
SIMBADdata

HD 10390 (HR 490; 51 H. Trinaguli) is a solitary star[17] located in the northern constellation Triangulum. It is faintly visible to the naked eye as a bluish-white hued point of light with an apparent magnitude of 5.64.[2] The object is located relatively close at a distance of 292 light-years based on Gaia DR3 parallax measurements[1] and it is drifting closer with a heliocentric radial velocity of −1.9 km/s.[6] At its current distance, HD 10390's brightness is diminished by an interstellar extinction of only five-hundredths of a magnitude[18] and it has an absolute magnitude of +1.00.[7]

HD 10390 has a stellar classification of B9 IV-V,[4] indicating that it is a slightly evolved B-type star with a luminosity class intermediate between a subgiant and a main sequence star. Osawa (1959) gave a class of B9 V,[5] instead indicating that it is an ordinary B-type main-sequence star that is generating energy via hydrogen fusion at its core. It has 2.62 times the mass of the Sun[8] and 2.14 times the radius of the Sun.[9] It radiates 51.5 times the luminosity of the Sun[3] from its photosphere at an effective temperature of 11,076 K.[11] HD 10390 is metal defecient with an iron abundance of [Fe/H] = −0.2 or 63.1% of the Sun's[12] and it spins modestly with a projected rotational velocity of 45 km/s,[13] well below its breakup velocity of 355 km/s.[19] Despite the first classification, HD 10390 has only completed 16.8% of its main sequence lifetime[3] at the age of approximately 50 million years. [14]

  1. ^ a b c d e 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 Ducati2002 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 Cowley1972 was invoked but never defined (see the help page).
  5. ^ a b Cite error: The named reference Osawa1959 was invoked but never defined (see the help page).
  6. ^ a b Cite error: The named reference Wilson1953 was invoked but never defined (see the help page).
  7. ^ a b Cite error: The named reference Anderson2012 was invoked but never defined (see the help page).
  8. ^ a b Cite error: The named reference David2015 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 Cite error: The named reference Pauzen2005 was invoked but never defined (see the help page).
  12. ^ a b Cite error: The named reference Anders2019 was invoked but never defined (see the help page).
  13. ^ a b Cite error: The named reference Abt2002 was invoked but never defined (see the help page).
  14. ^ a b Cite error: The named reference Grosbol1978 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 Huang2010 was invoked but never defined (see the help page).