Observation data Epoch J2000 Equinox J2000 | |
---|---|
Constellation | Perseus |
Right ascension | 02h 02m 18.11081s [1] |
Declination | 54° 29′ 15.1488″ [1] |
Apparent magnitude (V) | 5.04 [2] |
Characteristics | |
Spectral type | B8 III [3] |
U−B color index | −0.32 [2] |
B−V color index | −0.08 [2] |
Astrometry | |
Radial velocity (Rv) | −2.30 [4] km/s |
Proper motion (μ) |
RA: +32.886
[1]
mas/
yr Dec.: −3.515 [1] mas/ yr |
Parallax (π) | 4.2743 ± 0.1856 mas [1] |
Distance | 760 ± 30
ly (230 ± 10 pc) |
Absolute magnitude (MV) | −1.75 [5] |
Details | |
Radius | 3.2 [6] R☉ |
Luminosity | 670 [5] L☉ |
Surface gravity (log g) | 4.19 [7] cgs |
Temperature | 12,230 [7] K |
Metallicity [Fe/H] | +0.30 [7] dex |
Rotational velocity (v sin i) | 60 [8] km/s |
Other designations | |
Database references | |
SIMBAD | data |
4 Persei is a single [10] star in the northern constellation of Perseus, located around 670 light years away from the Sun. [1] It is visible to the naked eye as a faint, blue-white hued star with an apparent visual magnitude of 5.04 [2] The Bayer designation for this star is g Persei; 4 Persei is the Flamsteed designation. This object has a peculiar velocity of 26.3 km/s and may be a runaway star. [11]
The stellar classification for 4 Persei is B8 III, [3] matching an aging B-type giant star that has evolved off the main sequence. It is spinning with a projected rotational velocity of 60 km/s [8] and has about 3.2 [6] times the Sun's radius The star is radiating 670 [5] times the luminosity of the Sun from its photosphere at an effective temperature of 12,230 K. [7] 4 Persei is embedded in a small, relatively dense dust cloud, which is resulting in infrared emission from the cold dust. [12]
Observation data Epoch J2000 Equinox J2000 | |
---|---|
Constellation | Perseus |
Right ascension | 02h 02m 18.11081s [1] |
Declination | 54° 29′ 15.1488″ [1] |
Apparent magnitude (V) | 5.04 [2] |
Characteristics | |
Spectral type | B8 III [3] |
U−B color index | −0.32 [2] |
B−V color index | −0.08 [2] |
Astrometry | |
Radial velocity (Rv) | −2.30 [4] km/s |
Proper motion (μ) |
RA: +32.886
[1]
mas/
yr Dec.: −3.515 [1] mas/ yr |
Parallax (π) | 4.2743 ± 0.1856 mas [1] |
Distance | 760 ± 30
ly (230 ± 10 pc) |
Absolute magnitude (MV) | −1.75 [5] |
Details | |
Radius | 3.2 [6] R☉ |
Luminosity | 670 [5] L☉ |
Surface gravity (log g) | 4.19 [7] cgs |
Temperature | 12,230 [7] K |
Metallicity [Fe/H] | +0.30 [7] dex |
Rotational velocity (v sin i) | 60 [8] km/s |
Other designations | |
Database references | |
SIMBAD | data |
4 Persei is a single [10] star in the northern constellation of Perseus, located around 670 light years away from the Sun. [1] It is visible to the naked eye as a faint, blue-white hued star with an apparent visual magnitude of 5.04 [2] The Bayer designation for this star is g Persei; 4 Persei is the Flamsteed designation. This object has a peculiar velocity of 26.3 km/s and may be a runaway star. [11]
The stellar classification for 4 Persei is B8 III, [3] matching an aging B-type giant star that has evolved off the main sequence. It is spinning with a projected rotational velocity of 60 km/s [8] and has about 3.2 [6] times the Sun's radius The star is radiating 670 [5] times the luminosity of the Sun from its photosphere at an effective temperature of 12,230 K. [7] 4 Persei is embedded in a small, relatively dense dust cloud, which is resulting in infrared emission from the cold dust. [12]