Observation data Epoch J2000 Equinox J2000 | |
---|---|
Constellation | Vulpecula |
Right ascension | 20h 37m 04.6724s [1] |
Declination | +26° 27′ 43.006″ [1] |
Apparent magnitude (V) | 5.590 [2] |
Characteristics | |
Spectral type | B9 V [3] [4] |
B−V color index | −0.050±0.004 [5] |
Astrometry | |
Radial velocity (Rv) | −21.8±4.3 [6] km/s |
Proper motion (μ) |
RA: 15.349±0.042
[1]
mas/
yr Dec.: −11.775±0.040 [1] mas/ yr |
Parallax (π) | 10.6692 ± 0.0483 mas [1] |
Distance | 306 ± 1
ly (93.7 ± 0.4 pc) |
Absolute magnitude (MV) | 0.65 [5] |
Details | |
Mass | 2.77±0.03 [4] M☉ |
Radius | 3.1 [7] R☉ |
Luminosity | 75.0+4.8 −4.5 [4] L☉ |
Surface gravity (log g) | 3.781 [8] cgs |
Temperature | 10,789+50 −49 [4] K |
Metallicity [Fe/H] | −0.27±0.04 [5] dex |
Rotational velocity (v sin i) | 335 [4] km/s |
Other designations | |
Database references | |
SIMBAD | data |
27 Vulpeculae is a single, [10] blue-white star in the northern constellation of Vulpecula. It is a dim star, visible to the naked eye, with an apparent visual magnitude of 5.59. [2] An annual parallax shift of 10.6692±0.0483 mas [1] provides a distance estimate of about 306 light-years. It is moving closer with a heliocentric radial velocity of −22 km/s, [6] and will make perihelion passage at a distance of around 119 ly (36.56 pc) in 3.75 million years. [5]
This is a B-type main-sequence star with a stellar classification of B9 V. [3] It is spinning rapidly, showing a projected rotational velocity of 335. [4] The star has an estimated 2.77 [4] times the mass of the Sun and about 3.1 [7] times the Sun's radius. It is radiating 75 [4] times the Sun's luminosity from its photosphere at an effective temperature of 10,789 K. [4]
Observation data Epoch J2000 Equinox J2000 | |
---|---|
Constellation | Vulpecula |
Right ascension | 20h 37m 04.6724s [1] |
Declination | +26° 27′ 43.006″ [1] |
Apparent magnitude (V) | 5.590 [2] |
Characteristics | |
Spectral type | B9 V [3] [4] |
B−V color index | −0.050±0.004 [5] |
Astrometry | |
Radial velocity (Rv) | −21.8±4.3 [6] km/s |
Proper motion (μ) |
RA: 15.349±0.042
[1]
mas/
yr Dec.: −11.775±0.040 [1] mas/ yr |
Parallax (π) | 10.6692 ± 0.0483 mas [1] |
Distance | 306 ± 1
ly (93.7 ± 0.4 pc) |
Absolute magnitude (MV) | 0.65 [5] |
Details | |
Mass | 2.77±0.03 [4] M☉ |
Radius | 3.1 [7] R☉ |
Luminosity | 75.0+4.8 −4.5 [4] L☉ |
Surface gravity (log g) | 3.781 [8] cgs |
Temperature | 10,789+50 −49 [4] K |
Metallicity [Fe/H] | −0.27±0.04 [5] dex |
Rotational velocity (v sin i) | 335 [4] km/s |
Other designations | |
Database references | |
SIMBAD | data |
27 Vulpeculae is a single, [10] blue-white star in the northern constellation of Vulpecula. It is a dim star, visible to the naked eye, with an apparent visual magnitude of 5.59. [2] An annual parallax shift of 10.6692±0.0483 mas [1] provides a distance estimate of about 306 light-years. It is moving closer with a heliocentric radial velocity of −22 km/s, [6] and will make perihelion passage at a distance of around 119 ly (36.56 pc) in 3.75 million years. [5]
This is a B-type main-sequence star with a stellar classification of B9 V. [3] It is spinning rapidly, showing a projected rotational velocity of 335. [4] The star has an estimated 2.77 [4] times the mass of the Sun and about 3.1 [7] times the Sun's radius. It is radiating 75 [4] times the Sun's luminosity from its photosphere at an effective temperature of 10,789 K. [4]