Psi3 Aurigae
Star in the constellation Auriga
From Wikipedia, the free encyclopedia
Psi3 Aurigae is a single,[9] blue-white hued star in the northern constellation of Auriga. Its name is a Bayer designation that is Latinized from ψ3 Aurigae, and abbreviated Psi3 Aur or ψ3 Aur. This star is dimly visible to the naked eye with an apparent visual magnitude of +5.20.[3] Based upon an annual parallax shift of 3.66 mas as seen from the Earth,[2] it is approximately 890 light-years (270 pc) distant from the Sun.
 | |
| Observation data Epoch J2000.0 Equinox J2000.0 (ICRS) | |
|---|---|
| Constellation | Auriga[1] |
| Right ascension | 06h 38m 49.180s[2] |
| Declination | +39° 54′ 09.21″[2] |
| Apparent magnitude (V) | +5.20[3] |
| Characteristics | |
| Spectral type | B8 III[4] |
| U−B color index | −0.38[5] |
| B−V color index | −0.07[5] |
| Astrometry | |
| Radial velocity (Rv) | −1.22±4.04[2] km/s |
| Proper motion (μ) | RA: −7.718 mas/yr[2] Dec.: −11.191 mas/yr[2] |
| Parallax (π) | 3.6617±0.1113 mas[2] |
| Distance | 890 ± 30 ly (273 ± 8 pc) |
| Absolute magnitude (MV) | −2.71[1] |
| Details | |
| Radius | 4.2[6] R☉ |
| Luminosity | 1,624[1] L☉ |
| Temperature | 13,361±83[7] K |
| Rotational velocity (v sin i) | 118[7] km/s |
| Other designations | |
| ψ3 Aur, 52 Aur, BD+40°1665, GC 8655, HD 47100, HIP 31789, HR 2420, SAO 59319, PPM 71895[8] | |
| Database references | |
| SIMBAD | data |
This is a B-type giant star with a stellar classification of B8 III.[4] It has about 4.2[6] times the radius of the Sun and is spinning with a relatively high projected rotational velocity of 118 km/s.[7] The star is radiating 1,624[1] times the Sun's luminosity from its photosphere at an effective temperature of 13,361 K.[7]