Nu Doradus
Star in the constellation Dorado
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Nu Doradus, Latinized from ν Doradus, is a single,[10] blue-white hued star in the southern constellation of Dorado. It is visible to the naked eye with an apparent visual magnitude of +5.06.[2] Based upon an annual parallax shift of 11.6 mas as seen from Earth,[1] it is located about 282 light years from the Sun.[11] At that distance, the visual magnitude is diminished by an extinction of 0.07 due to interstellar dust. It is moving further from the Sun with a heliocentric radial velocity of +17.5 km/s.[4]
| Observation data Epoch J2000.0 Equinox J2000.0 (ICRS) | |
|---|---|
| Constellation | Dorado |
| Right ascension | 06h 08m 44.26178s[1] |
| Declination | −68° 50′ 36.2824″[1] |
| Apparent magnitude (V) | 5.06[2] |
| Characteristics | |
| Evolutionary stage | main sequence[1] |
| Spectral type | B8 V[3] |
| U−B color index | −0.19[2] |
| B−V color index | −0.08[2] |
| Astrometry | |
| Radial velocity (Rv) | +17.5[4] km/s |
| Proper motion (μ) | RA: −51.204[1] mas/yr Dec.: +19.086[1] mas/yr |
| Parallax (π) | 11.5734±0.0820 mas[1] |
| Distance | 282 ± 2 ly (86.4 ± 0.6 pc) |
| Absolute magnitude (MV) | +0.24[5] |
| Details | |
| Mass | 2.73[6] M☉ |
| Radius | 3.2[7] R☉ |
| Luminosity | 107[5] L☉ |
| Surface gravity (log g) | 4.01±0.14[6] cgs |
| Temperature | 11,381±387[6] K |
| Rotation | 1.40032[8] d |
| Rotational velocity (v sin i) | 98[6] km/s |
| Age | 118[6] Myr |
| Other designations | |
| ν Dor, CPD−68°474, FK5 1166, HD 43107, HIP 29134, HR 2221, SAO 249461[9] | |
| Database references | |
| SIMBAD | data |
This is an ordinary B-type main-sequence star, as indicated by its stellar classification of B8 V.[3] It is an estimated 118[6] million years old and is spinning with a projected rotational velocity of 98 km/s.[6] The star has 2.7[6] times the mass of the Sun and about 3.2[7] times the Sun's radius. It is radiating 107[5] times the Sun's luminosity from its photoshere at an effective temperature of 11,381 K.[6] No infrared excess has been detected.[12]