14 Sagittarii
Star in the constellation Sagittarius
From Wikipedia, the free encyclopedia
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 â59 km/s.[4] It should achieve perihelion in about two million years, approaching as close as 136.1 ly (41.72 pc).[4]
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Sagittarius |
| Right ascension | 18h 14m 15.89989s[1] |
| Declination | â21° 42â² 47.3919â³[1] |
| Apparent magnitude (V) | 5.491[2] |
| Characteristics | |
| Spectral type | K2 III[3] |
| BâV color index | 1.528±0.001[4] |
| Astrometry | |
| Radial velocity (Rv) | â58.9±2.8[4] km/s |
| Proper motion (μ) | RA: â16.27[1] mas/yr Dec.: â23.49[1] mas/yr |
| Parallax (Ï) | 7.20±0.41 mas[1] |
| Distance | 450 ± 30 ly (139 ± 8 pc) |
| Absolute magnitude (MV) | â0.21[4] |
| Details | |
| Luminosity | 317.37[4] Lâ |
| Surface gravity (log g) | 1.7[2] cgs |
| Temperature | 3,940[2] K |
| Metallicity [Fe/H] | â0.26[2] dex |
| Other designations | |
| 14 Sgr, NSV 10393, BDâ21° 4916, HD 167036, HIP 89369, HR 6816, SAO 186509[5] | |
| Database references | |
| SIMBAD | data |
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]