10 Trianguli

10 Trianguli
Location of 10 Trianguli (circled)
Observation data
Epoch J2000.0      Equinox J2000.0 (ICRS)
Constellation Triangulum
Right ascension 02h 18m 56.99355s[1]
Declination +28° 38′ 33.6322″[1]
Apparent magnitude (V) 5.29±0.01[2]
Characteristics
Evolutionary stage main sequence star[3]
Spectral type A2 V[4][5]
U−B color index +0.02[6]
B−V color index +0.04[6]
Astrometry
Radial velocity (Rv)0.4±0.1[7] km/s
Proper motion (μ) RA: +7.073 mas/yr[1]
Dec.: +0.836 mas/yr[1]
Parallax (π)8.9971 ± 0.0729 mas[1]
Distance363 ± 3 ly
(111.1 ± 0.9 pc)
Absolute magnitude (MV)−0.02[8]
Details
Mass2.83±0.05[3] M☉
Radius3.71±0.19[9] R☉
Luminosity108+10
−9[3] L☉
Surface gravity (log g)3.73[10] cgs
Temperature9,023[11] K
Metallicity [Fe/H]+0.33[12] dex
Rotational velocity (v sin i)22±2[13] km/s
Age372±44[14][15] Myr
Other designations
1 H. Trianguli Minus,[16] 10 Tri, AG+28° 262, BD+27°360, GC 2781, HD 14252, HIP 10793, HR 675, SAO 75276
Database references
SIMBADdata

10 Trianguli (HD 14252; HR 675; 1 H. Trianguli Minus), or simply 10 Tri is a solitary star[17] located in the northern constellation Triangulum. It is faintly visible to the naked eye as a white-hued point of light with an apparent magnitude of 5.29.[2] Gaia DR3 parallax measurements imply a distance of 363 light-years [1] and it is slowly receding with a heliocentric radial velocity of 0.4 km/s.[7] At its current distance, 10 Tri's brightness is diminished by an interstellar extinction of 0.11 magnitudes[18] and it has an absolute magnitude of −0.02.[8]

10 Trianguli has a stellar classification of A2 V,[4][5] indicating that it is an ordinary A-type main-sequence star that is generating energy via hydrogen fusion at its core. It has 2.83 times the mass of the Sun[3] and a slightly enlarged radius 3.71 times that of the Sun.[9] It radiates 108 times the luminosity of the Sun[3] from its photosphere at an effective temperature of 9,023 K.[11] 10 Trianguli is rather evolved for its class, having completed 92.5% of its main sequence lifetime[3] at the age of 372 million years.[14][15] It is metal enriched with an iron abundance of [Fe/H] = +0.33 or % of the Sun's[12] and unlike most hot stars, it spins modestly with a projected rotational velocity of 22 km/s.[13]

10 Trianguli has a 13th magnitude companion located 58.3" away along a position angle of 205°.[19] It is an unrelated background star that is much more distant than 10 Trianguli.[20] Together with ι Trianguli and 12 Trianguli, it forms part of the obsolete Triangulum Minus.

  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 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 Osawa1959 was invoked but never defined (see the help page).
  5. ^ a b Cite error: The named reference Cowley1969 was invoked but never defined (see the help page).
  6. ^ a b Cite error: The named reference Osawa1960 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. ^ a b 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 Phillip1980 was invoked but never defined (see the help page).
  11. ^ a b Cite error: The named reference Takeda2019 was invoked but never defined (see the help page).
  12. ^ a b Cite error: The named reference Gerban2016 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. ^ a b Cite error: The named reference Gontcharov2012A was invoked but never defined (see the help page).
  15. ^ a b Cite error: The named reference Gontcharov2012B was invoked but never defined (see the help page).
  16. ^ Cite error: The named reference Verbunt2010 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 Mason2001 was invoked but never defined (see the help page).
  20. ^ Cite error: The named reference EDR3B was invoked but never defined (see the help page).