| Observation data EpochJ2000.0 EquinoxJ2000.0 (ICRS) | |
|---|---|
| Constellation | Dorado |
| Right ascension | 06h 06m 09.38154s[1] |
| Declination | −66° 02′ 22.6304″[1] |
| Apparent magnitude (V) | 5.72[2] |
| Characteristics | |
| Spectral type | A0V[3] |
| U−Bcolor index | −0.024±0.004[2] |
| B−Vcolor index | −0.03[4] |
| Astrometry | |
| Radial velocity (Rv) | +17.6±4.3[2] km/s |
| Proper motion (μ) | RA: +13.656[1]mas/yr Dec.: +27.815[1]mas/yr |
| Parallax (π) | 9.7251±0.1094 mas[1] |
| Distance | 335 ± 4 ly (103 ± 1 pc) |
| Absolute magnitude (MV) | +0.75[2] |
| Details | |
| Mass | 2.46[5] M☉ |
| Luminosity | 49[6] L☉ |
| Surface gravity (log g) | 4.09±0.08[7] cgs |
| Temperature | 10,325±240[7] K |
| Rotational velocity (v sin i) | 149[5] km/s |
| Age | 94[5] Myr |
| Other designations | |
| η1 Dor,CPD−66° 493,GC 7813,HD 42525,HIP 28909,HR 2194,SAO 249448,PPM 355182,TYC 8905-1950-1[8] | |
| Database references | |
| SIMBAD | data |
Eta1 Doradus,Latinized fromη1 Doradus, is astar in the southernconstellation ofDorado. It is visible to the naked eye as a dim, white-hued star with anapparent visual magnitude of 5.72.[2] This object is located approximately 335 light years distant from the Sun, based onparallax, and is drifting further away with aradial velocity of +18 km/s.[2] It iscircumpolar south of latitude 24°S.
This object is anA-type main-sequence star with astellar classification of A0V.[3] It is 94[5] million years old with a high rotation rate, showing aprojected rotational velocity of 149.[5] The star has 2.46[5] times themass of the Sun and is radiating 49[6] times theSun's luminosity from itsphotosphere at aneffective temperature of 10,325 K.[7] It is the southern pole star ofVenus.[9]
