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.[2] The distance to 14 Vul, as determined from its annual parallax shift of 18.7753±0.1714,[1] is around 174 light years. It is moving nearer with a heliocentric radial velocity of about −38 km/s,[4] and will make its closest approach in a million years when comes to within about 62 ly (19.04 pc).[2]
Observation data Epoch J2000 Equinox J2000 | |
---|---|
Constellation | Vulpecula |
Right ascension | 19h 59m 10.5367s[1] |
Declination | +23° 06′ 04.604″[1] |
Apparent magnitude (V) | 5.68[2] |
Characteristics | |
Spectral type | F1 Vn[3] |
B−V color index | 0.345±0.004[2] |
Astrometry | |
Radial velocity (Rv) | −38.0±3.7[4] km/s |
Proper motion (μ) | RA: −68.157±0.100[1] mas/yr Dec.: 6.926±0.125[1] mas/yr |
Parallax (π) | 18.7753 ± 0.1714 mas[1] |
Distance | 174 ± 2 ly (53.3 ± 0.5 pc) |
Absolute magnitude (MV) | 2.23[2] |
Details | |
Mass | 1.52[5] M☉ |
Luminosity | 11.09[2] L☉ |
Surface gravity (log g) | 3.81±0.14[5] cgs |
Temperature | 6,938±236[5] K |
Metallicity [Fe/H] | −0.36[4] dex |
Rotational velocity (v sin i) | 150[6] km/s |
Age | 1.743[5] Gyr |
Other designations | |
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[2] times the Sun's luminosity from its photosphere at an effective temperature of about 6,938 K.[5]