17 Vulpeculae is a single,[10] blue-white hued star in the northern constellation of Vulpecula. The distance to this star can be estimated from its annual parallax shift of 6.8168±0.1430,[1] which yields a separation of roughly 480 light years. It is moving nearer with a heliocentric radial velocity of −8 km/s,[4] and will make its closest approach in around 6.1 million years at a distance of about 419 ly (128.36 pc).[2] The star is faintly visible to the naked eye with an apparent visual magnitude of 5.08.[2]
Observation data Epoch J2000 Equinox J2000 | |
---|---|
Constellation | Vulpecula |
Right ascension | 20h 06m 53.4077s[1] |
Declination | +23° 36′ 51.9292″[1] |
Apparent magnitude (V) | 5.08[2] |
Characteristics | |
Spectral type | B3 V[3] |
B−V color index | −0.162±0.002[2] |
Astrometry | |
Radial velocity (Rv) | −7.6±0.8[4] km/s |
Proper motion (μ) | RA: 15.246±0.096[1] mas/yr Dec.: 0.316±0.108[1] mas/yr |
Parallax (π) | 6.8168 ± 0.1430 mas[1] |
Distance | 480 ± 10 ly (147 ± 3 pc) |
Absolute magnitude (MV) | −0.86[2] |
Details | |
Mass | 6.1±0.1[5] M☉ |
Radius | 3.9[6] R☉ |
Luminosity | 573.30[2] L☉ |
Temperature | 15,648[7] K |
Metallicity [Fe/H] | −0.14±0.04[2] dex |
Rotational velocity (v sin i) | 115[8] km/s |
Age | 10.7±1.9[5] Myr |
Other designations | |
Database references | |
SIMBAD | data |
This is an ordinary B-type main-sequence star with a stellar classification of B3 V.[3] It is just 11[5] million years old with a high projected rotational velocity of 115 km/s.[8] The star has an estimated 6.1[5] times the mass of the Sun and around 3.9[6] times the Sun's radius. It is radiating 573[2] times the Sun's luminosity from its photosphere at an effective temperature of 15,648 K.[7]