11 Trianguli

11 Trianguli
Location of 11 Trianguli (circled)
Observation data
Epoch J2000.0      Equinox J2000.0 (ICRS)
Constellation Triangulum
Right ascension 02h 27m 27.771s[1]
Declination +31° 48′ 04.61″[1]
Apparent magnitude (V) 5.55[2]
Characteristics
Evolutionary stage horizontal branch[3]
Spectral type K1 III[4][5]
B−V color index +1.1[2]
Astrometry
Radial velocity (Rv)−41.614±0.163[6] km/s
Proper motion (μ) RA: −24.331[1] mas/yr
Dec.: −27.845[1] mas/yr
Parallax (π)11.6240 ± 0.1293 mas[1]
Distance281 ± 3 ly
(86.0 ± 1.0 pc)
Absolute magnitude (MV)0.836[7]
Details
Mass2.446±0.122[8] M☉
Radius12.055±0.603[8] R☉
Luminosity54.6±3.8[9] L☉
Surface gravity (log g)2.2[10] cgs
Temperature4,572[10] K
Metallicity [Fe/H]−0.19[7][11] dex
Age6.3+2.8
−1.4[3] Gyr
Other designations
11 Trianguli, AG+31° 231, BD+31°427, GC 2943, HD 15176, HIP 11432, HR 712, SAO 55570
Database references
SIMBADdata

11 Trianguli is a solitary[12] star located in the northern constellation Triangulum, with an apparent magnitude of 5.55. The star is situated 281 light years[1] away but is approaching with a heliocentric radial velocity of −41.614 km/s.[6] It is probably on the horizontal branch fusing helium in its core,[3] and is calculated to be about 6.3 Gyr old.[3] It has a stellar classification of K1 III.[4][5] It has 2.446 times the mass of the Sun and 12.055 times the radius of the Sun.[8] It shines at 54.6 times the luminosity of the Sun[9] from its photosphere at an effective temperature of 4,572 K.[10]

  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 Cite error: The named reference tycho2 was invoked but never defined (see the help page).
  3. ^ a b c d Cite error: The named reference Stock2018 was invoked but never defined (see the help page).
  4. ^ a b Cite error: The named reference Hinkel2019 was invoked but never defined (see the help page).
  5. ^ a b Cite error: The named reference Cruzalebes2019 was invoked but never defined (see the help page).
  6. ^ a b Cite error: The named reference Brandt2021 was invoked but never defined (see the help page).
  7. ^ a b Cite error: The named reference Soubiran2008 was invoked but never defined (see the help page).
  8. ^ a b c Cite error: The named reference Kervella2019 was invoked but never defined (see the help page).
  9. ^ a b Cite error: The named reference Reffert2015 was invoked but never defined (see the help page).
  10. ^ a b c Cite error: The named reference Soubiran2016 was invoked but never defined (see the help page).
  11. ^ Cite error: The named reference Massarotti2008 was invoked but never defined (see the help page).
  12. ^ Cite error: The named reference Eggleton2008 was invoked but never defined (see the help page).