14 Sagittarii

14 Sagittarii
Observation data
Epoch J2000      Equinox J2000
Constellation Sagittarius
Right ascension 18h 14m 15.89989s[1]
Declination −21° 42′ 47.3919″[1]
Apparent magnitude (V) 5.491[2]
Characteristics
Spectral type K2 III[3]
B−V color index 1.528±0.001[4]
Astrometry
Radial velocity (Rv)−58.9±2.8[4] km/s
Proper motion (μ) RA: −16.27[1] mas/yr
Dec.: −23.49[1] mas/yr
Parallax (π)7.20 ± 0.41 mas[1]
Distance450 ± 30 ly
(139 ± 8 pc)
Absolute magnitude (MV)−0.21[4]
Details
Luminosity317.37[4] L☉
Surface gravity (log g)1.7[2] cgs
Temperature3,940[2] K
Metallicity [Fe/H]−0.26[2] dex
Other designations
14 Sgr, NSV 10393, BD−21° 4916, HD 167036, HIP 89369, HR 6816, SAO 186509[5]
Database references
SIMBADdata

14 Sagittarii is a single,[6] orange-hued star in the southern zodiac constellation of Sagittarius. It is faintly visible to the naked eye under good seeing conditions, having an apparent visual magnitude of 5.49.[2] Based upon an annual parallax shift of 7.20±0.41 mas,[1] it is located some 450 light years away. The star is moving closer to the Sun with a heliocentric radial velocity of around −59 km/s.[4] It should achieve perihelion in about two million years, approaching as close as 136.1 ly (41.72 pc).[4]

This is an evolved giant star with a stellar classification of K2 III,[3] having exhausted the supply of hydrogen at its core and moved off the main sequence. It is a suspected variable star, possibly of the micro-variable variety, having an amplitude of less than 0.03 in magnitude.[4] 14 Sagittarii is radiating about 317[4] times the Sun's luminosity from its photosphere at an effective temperature of around 3,940 K.[2]

  1. ^ a b c d e f Cite error: The named reference vanLeeuwen2007 was invoked but never defined (see the help page).
  2. ^ a b c d e f Cite error: The named reference Soubiran2010 was invoked but never defined (see the help page).
  3. ^ a b Cite error: The named reference houk1978 was invoked but never defined (see the help page).
  4. ^ a b c d e f g h Cite error: The named reference Anderson2012 was invoked but never defined (see the help page).
  5. ^ Cite error: The named reference SIMBAD was invoked but never defined (see the help page).
  6. ^ Cite error: The named reference Eggleton2008 was invoked but never defined (see the help page).