12 Trianguli

12 Trianguli
Location of 12 Trianguli (circled)
Observation data
Epoch J2000.0      Equinox J2000.0 (ICRS)
Constellation Triangulum
Right ascension 02h 28m 09.980s[1]
Declination +29° 40′ 09.59″[1]
Apparent magnitude (V) 5.37[2]
Characteristics
Spectral type F0 III[3][4][5][6]
B−V color index +0.29[6]
Astrometry
Radial velocity (Rv)−24.8±2.8[7][6] km/s
Proper motion (μ) RA: −15.632[1] mas/yr
Dec.: −86.097[1] mas/yr
Parallax (π)20.4105 ± 0.0942 mas[1]
Distance159.8 ± 0.7 ly
(49.0 ± 0.2 pc)
Details
Mass1.6[2] M☉
Luminosity14[2] L☉
Surface gravity (log g)3.79[6] cgs
Temperature7,199[2] K
Metallicity [Fe/H]0.27[5] dex
Rotational velocity (v sin i)85[8][9] km/s
Age2.19[6] Gyr
Other designations
12 Trianguli, AG+29°296, BD+29°417, GC 2956, HD 15257, HIP 11486, HR 717, SAO 75382
Database references
SIMBADdata

12 Trianguli is a solitary[10] star located in the northern constellation Triangulum, with an apparent magnitude of 5.37,[2] making it faintly visible to the naked eye under ideal conditions. The star is situated 160 light years[1] away but is approaching with a heliocentric radial velocity of −24.8 km/s.[7][6] It is calculated to be about 2.19 Gyr old[6] with a stellar classification of F0 III,[3][4][5][6] making it an F-type giant. It has 1.6 times the mass of the Sun[2] and shines at 14 times the luminosity of the Sun[2] from its photosphere at an effective temperature of 7,199 K.[2]

Together with ι Trianguli and 10 Trianguli, it forms part of the obsolete Triangulum Minus.

  1. ^ a b c d e f Cite error: The named reference EDR3 was invoked but never defined (see the help page).
  2. ^ a b c d e f g h Cite error: The named reference Reiners2020 was invoked but never defined (see the help page).
  3. ^ a b Cite error: The named reference Kervella2019 was invoked but never defined (see the help page).
  4. ^ a b Cite error: The named reference Cruzalebes2019 was invoked but never defined (see the help page).
  5. ^ a b c Cite error: The named reference Netopil2017 was invoked but never defined (see the help page).
  6. ^ a b c d e f g h Cite error: The named reference Luck2015 was invoked but never defined (see the help page).
  7. ^ a b Cite error: The named reference Brandt2021 was invoked but never defined (see the help page).
  8. ^ Cite error: The named reference vanBelle2012 was invoked but never defined (see the help page).
  9. ^ Cite error: The named reference deBruijne2012 was invoked but never defined (see the help page).
  10. ^ Cite error: The named reference Eggleton2008 was invoked but never defined (see the help page).