14 Vulpeculae
Star in the constellation Vulpecula
From Wikipedia, the free encyclopedia
14 Vulpeculae is a single,[8] yellow-white hued star in the northern constellation of Vulpecula and proximate to the Dumbbell Nebula (M 27) on the celestial sphere, although actually much closer to the Earth.[9] It is a dim star that is faintly visible to the naked eye with an apparent visual magnitude of 5.68.[1] The distance to 14 Vul, as determined from its annual parallax shift of 18.7753±0.1714,[2] is around 174 light years. It is moving nearer with a heliocentric radial velocity of about â38 km/s,[4] and will make its closest approach in a million years when comes to within about 62 ly (19.04 pc).[1]
 | |
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Vulpecula[1] |
| Right ascension | 19h 59m 10.5367s[2] |
| Declination | +23° 06â² 04.604â³[2] |
| Apparent magnitude (V) | 5.68[1] |
| Characteristics | |
| Evolutionary stage | main sequence[2] |
| Spectral type | F1 Vn[3] |
| BâV color index | 0.345±0.004[1] |
| Astrometry | |
| Radial velocity (Rv) | â38.0±3.7[4] km/s |
| Proper motion (μ) | RA: â68.157±0.100[2] mas/yr Dec.: 6.926±0.125[2] mas/yr |
| Parallax (Ï) | 18.7753±0.1714 mas[2] |
| Distance | 174 ± 2 ly (53.3 ± 0.5 pc) |
| Absolute magnitude (MV) | 2.23[1] |
| Details | |
| Mass | 1.52[5] Mâ |
| Luminosity | 11.09[1] Lâ |
| Surface gravity (log g) | 3.81±0.14[5] cgs |
| Temperature | 6,938±236[5] K |
| Metallicity [Fe/H] | â0.36[4] dex |
| Rotational velocity (v sin i) | 150[6] km/s |
| Age | 1.743[5] Gyr |
| Other designations | |
| 14 Vul, BD+22° 3872, HD 189410, HIP 98375, HR 7641, SAO 88016[7] | |
| Database references | |
| SIMBAD | data |
This is an F-type main-sequence star with a stellar classification of F1 Vn,[3] where the 'n' notation indicates nebulous lines due to rapid rotation. At the estimated age of 1.7[5] billion years old, it is spinning with a projected rotational velocity of 150[6] km/s and has sub-solar metallicity.[4] The star has 1.5[5] times the mass of the Sun and is radiating 11[1] times the Sun's luminosity from its photosphere at an effective temperature of about 6,938 K.[5]