29 Persei
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Perseus |
| Right ascension | 03h 18m 37.74077s |
| Declination | 50° 13′ 19.8341″ |
| Apparent magnitude (V) | 5.16 |
| Characteristics | |
| Evolutionary stage | Main sequence |
| Spectral type | B3V |
| U−B color index | −0.56 |
| B−V color index | −0.06 |
| Astrometry | |
| Radial velocity (Rv) | −1.50 km/s |
| Proper motion (μ) | RA: +23.574 mas/yr Dec.: −24.407 mas/yr |
| Parallax (π) | 5.12±0.29 mas |
| Distance | 640 ± 40 ly (200 ± 10 pc) |
| Absolute magnitude (MV) | −1.31 |
| Details | |
| Mass | 6.8 M☉ |
| Radius | 3.9 R☉ |
| Luminosity | 960 L☉ |
| Surface gravity (log g) | 4.025±0.113 cgs |
| Temperature | 16,143 K |
| Metallicity [Fe/H] | 0.00 dex |
| Rotational velocity (v sin i) | 120 km/s |
| Other designations | |
| 29 Per, BD+49°899, FK5 2188, GC 3934, HD 20365, HIP 15404, HR 987, SAO 23944 | |
| Database references | |
| SIMBAD | data |
29 Persei is a single star in the northern constellation of Perseus, located approximately 640 light years away from the Sun based on parallax. It is visible to the naked eye as faint, blue-white hued star with an apparent visual magnitude of 5.16. This object is a member of the Alpha Persei Cluster.
This is a B-type main-sequence star with a stellar classification of B3 V. During the 1930s it was reported to have a variable radial velocity, but that may instead have been due to instrument error. The star has a high rate of spin, showing a projected rotational velocity of 120 km/s. It has 6.8 times the mass of the Sun and about 3.9 times the Sun's radius. 29 Persei is radiating 960 times the Sun's luminosity from its photosphere at an effective temperature of 16,143 K.