Beta Doradus
| Observation data Epoch J2000.0 Equinox J2000.0 (ICRS) | |
|---|---|
| Constellation | Dorado |
| Right ascension | 05h 33m 37.51253s |
| Declination | −62° 29′ 23.3231″ |
| Apparent magnitude (V) | 3.46 to 4.08 |
| Characteristics | |
| Spectral type | F4-G4Ia-II |
| U−B color index | +0.55 |
| B−V color index | +0.70 |
| R−I color index | +0.48 |
| Variable type | δ Cephei |
| Astrometry | |
| Radial velocity (Rv) | +7.2 km/s |
| Proper motion (μ) | RA: +0.800 mas/yr Dec.: +9.458 mas/yr |
| Parallax (π) | 3.14±0.16 mas |
| Distance | 1,040 ± 50 ly (320 ± 20 pc) |
| Absolute magnitude (MV) | −3.91±0.11 |
| Details | |
| Mass | 7.7±0.2 M☉ |
| Radius | 67.8±0.7 R☉ |
| Luminosity | 3,200 L☉ |
| Surface gravity (log g) | 1.3 cgs |
| Temperature | 5,445 K |
| Metallicity [Fe/H] | –0.13 dex |
| Rotational velocity (v sin i) | 0 km/s |
| Age | 42.5±2.7 Myr |
| Other designations | |
| β Dor, Beta Doradus, Beta Dor, CD−62 214, CPD−62 487, FK5 212, GC 6944, HD 37350, HIP 26069, HR 1922, SAO 249311, PPM 354837 | |
| Database references | |
| SIMBAD | data |
Beta Doradus, Latinized from β Doradus, is the second brightest star in the southern constellation of Dorado. It is a Classical Cepheid variable, with an apparent magnitude that varies between 3.46 and 4.08. Based upon parallax measurements with the Hubble Space Telescope, it is located at a distance of 1,040 light-years (320 parsecs) from Earth.