Observation data Epoch J2000 Equinox J2000 | |
---|---|
Constellation | Perseus |
Right ascension | 02h 51m 30.83928s [1] |
Declination | 35° 03′ 35.0800″ [1] |
Apparent magnitude (V) | 4.53 [2] |
Characteristics | |
Spectral type | K5+III [3] |
U−B color index | +1.92 [2] |
B−V color index | +1.57 [2] |
Variable type | suspected [4] |
Astrometry | |
Radial velocity (Rv) | +13.21 [5] km/s |
Proper motion (μ) |
RA: +9.63
[6]
mas/
yr Dec.: −63.68 [6] mas/ yr |
Parallax (π) | 8.4657 ± 0.2848 mas [1] |
Distance | 390 ± 10
ly (118 ± 4 pc) |
Absolute magnitude (MV) | −1.21 [7] |
Details | |
Mass | 1.34±0.18 [8] M☉ |
Radius | 51.56+0.37 −0.88 [1] R☉ |
Luminosity | 551±21 [1] L☉ |
Surface gravity (log g) | 1.42 [9] cgs |
Temperature | 4,000 [10] K |
Metallicity [Fe/H] | −0.26 [7] dex |
Rotational velocity (v sin i) | 1.6 [11] km/s |
Other designations | |
Database references | |
SIMBAD | data |
17 Persei is a single [13] star in the northern constellation of Perseus, located about 390 light years away from the Sun. It is visible to the naked eye as a faint, orange-hued star with an apparent visual magnitude of 4.53. [2] This object is moving further from the Earth at a heliocentric radial velocity of +13 km/s. [5]
Based upon a stellar classification of K5+III, [3] this is an evolved giant star that has exhausted the hydrogen at its core. It is a suspected variable star, with an amplitude of 0.012 magnitude and period 4.4 days. [4] [14] The star has 1.3 [8] times the mass of the Sun and has expanded to nearly 52 [1] times the Sun's radius. It is radiating 551 [1] times the luminosity of the Sun from its enlarged photosphere at an effective temperature of 4,000 K. [10]
Observation data Epoch J2000 Equinox J2000 | |
---|---|
Constellation | Perseus |
Right ascension | 02h 51m 30.83928s [1] |
Declination | 35° 03′ 35.0800″ [1] |
Apparent magnitude (V) | 4.53 [2] |
Characteristics | |
Spectral type | K5+III [3] |
U−B color index | +1.92 [2] |
B−V color index | +1.57 [2] |
Variable type | suspected [4] |
Astrometry | |
Radial velocity (Rv) | +13.21 [5] km/s |
Proper motion (μ) |
RA: +9.63
[6]
mas/
yr Dec.: −63.68 [6] mas/ yr |
Parallax (π) | 8.4657 ± 0.2848 mas [1] |
Distance | 390 ± 10
ly (118 ± 4 pc) |
Absolute magnitude (MV) | −1.21 [7] |
Details | |
Mass | 1.34±0.18 [8] M☉ |
Radius | 51.56+0.37 −0.88 [1] R☉ |
Luminosity | 551±21 [1] L☉ |
Surface gravity (log g) | 1.42 [9] cgs |
Temperature | 4,000 [10] K |
Metallicity [Fe/H] | −0.26 [7] dex |
Rotational velocity (v sin i) | 1.6 [11] km/s |
Other designations | |
Database references | |
SIMBAD | data |
17 Persei is a single [13] star in the northern constellation of Perseus, located about 390 light years away from the Sun. It is visible to the naked eye as a faint, orange-hued star with an apparent visual magnitude of 4.53. [2] This object is moving further from the Earth at a heliocentric radial velocity of +13 km/s. [5]
Based upon a stellar classification of K5+III, [3] this is an evolved giant star that has exhausted the hydrogen at its core. It is a suspected variable star, with an amplitude of 0.012 magnitude and period 4.4 days. [4] [14] The star has 1.3 [8] times the mass of the Sun and has expanded to nearly 52 [1] times the Sun's radius. It is radiating 551 [1] times the luminosity of the Sun from its enlarged photosphere at an effective temperature of 4,000 K. [10]