| |
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Perseus |
| Right ascension | 03h21m 26.55723s[1] |
| Declination | 43° 19′ 46.7414″[1] |
| Apparent magnitude (V) | 4.96[2] |
| Characteristics | |
| Spectral type | A3V[3] |
| U−B color index | +0.07[4] |
| B−V color index | +0.04[4] |
| Astrometry | |
| Radial velocity (Rv) | −9.00[5] km/s |
| Proper motion (μ) | RA: −59.947[1] mas/yr Dec.: −0.839[1] mas/yr |
| Parallax (π) | 21.8865 ± 0.2690 mas[1] |
| Distance | 149 ± 2 ly (45.7 ± 0.6 pc) |
| Absolute magnitude (MV) | 1.64[2] |
| Details | |
| Mass | 2.05[6] M☉ |
| Radius | 1.8[7] R☉ |
| Luminosity | 21[6] L☉ |
| Surface gravity (log g) | 4.19[8] cgs |
| Temperature | 8,872[6] K |
| Metallicity [Fe/H] | −0.01[9] dex |
| Rotational velocity (v sin i) | 144[6] km/s |
| Age | 125+75 −25[10] Myr |
| Other designations | |
l Per, 32 Per, NSV 1107, BD+42°750, FK5 2236, GC 4004, HD 20677, HIP 15648, HR 1002, SAO 38750[11] | |
| Database references | |
| SIMBAD | data |
32 Persei is a single[12] star located 149[1] light years away from the Sun in the northern constellationofPerseus.[11] It has the Bayer designationofl Persei, while 32 Persei is the Flamsteed designation. This object is visible to the naked eye as a faint, white-hued star with an apparent visual magnitude of 4.96.[2] It is moving closer to the Earth with a heliocentric radial velocity of −9 km/s,[5] and is a member of the Sirius supercluster: a stream of stars that share a common motion through space.[13]
This is an ordinary A-type main-sequence star with a stellar classification of A3V.[3] It is around 125[10] million years old with a high rate of spin, showing a projected rotational velocity of 144 km/s.[6] The star has double[6] the mass of the Sun and 1.8[7] times the Sun's radius. It is radiating 21[6] times the luminosity of the Sun from its photosphere at an effective temperature of 8,872 K.[6]
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