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] |
Distance | 450 ± 30 ly (139 ± 8 pc) |
Absolute magnitude (MV) | −0.21[4] |
Details | |
Luminosity | 317.37[4] L☉ |
Surface gravity (log g) | 1.7[2] cgs |
Temperature | 3,940[2] K |
Metallicity [Fe/H] | −0.26[2] dex |
Other designations | |
Database references | |
SIMBAD | data |
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]
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