Eta1 Doradus
| Observation data Epoch J2000.0 Equinox J2000.0 (ICRS) | |
|---|---|
| Constellation | Dorado |
| Right ascension | 06h 06m 09.38177s |
| Declination | −66° 02′ 22.6352″ |
| Apparent magnitude (V) | 5.72 |
| Characteristics | |
| Evolutionary stage | main sequence |
| Spectral type | A0V |
| U−B color index | −0.024±0.004 |
| B−V color index | −0.03 |
| Astrometry | |
| Radial velocity (Rv) | +17.6±4.3 km/s |
| Proper motion (μ) | RA: +13.575 mas/yr Dec.: +28.139 mas/yr |
| Parallax (π) | 9.5464±0.0474 mas |
| Distance | 342 ± 2 ly (104.8 ± 0.5 pc) |
| Absolute magnitude (MV) | +0.75 |
| Details | |
| Mass | 2.46 M☉ |
| Radius | 2.5 R☉ |
| Luminosity | 49 L☉ |
| Surface gravity (log g) | 4.09±0.08 cgs |
| Temperature | 10,325±240 K |
| Rotational velocity (v sin i) | 149 km/s |
| Age | 94 Myr |
| Other designations | |
| η1 Dor, CPD−66°493, GC 7813, HD 42525, HIP 28909, HR 2194, SAO 249448, PPM 355182, TYC 8905-1950-1 | |
| Database references | |
| SIMBAD | data |
Eta1 Doradus, Latinized from η1 Doradus, is a star in the southern constellation of Dorado. It is visible to the naked eye as a dim, white-hued star with an apparent visual magnitude of 5.72. This object is located approximately 342 light years distant from the Sun, based on parallax, and is drifting further away with a radial velocity of +18 km/s. It is circumpolar south of latitude 24°S.
This object is an A-type main-sequence star with a stellar classification of A0V. It is 94 million years old with a high rotation rate, showing a projected rotational velocity of 149. The star has 2.46 times the mass of the Sun and is radiating 49 times the Sun's luminosity from its photosphere at an effective temperature of 10,325 K. It is the northern pole star of Venus.