HD 269810
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Dorado |
| Right ascension | 05h 35m 13.90s |
| Declination | −67° 33′ 27.5″ |
| Apparent magnitude (V) | 12.22 |
| Characteristics | |
| Spectral type | O2III(f*) |
| B−V color index | −0.14 |
| Astrometry | |
| Radial velocity (Rv) | 303 km/s |
| Proper motion (μ) | RA: +1.801 mas/yr Dec.: +0.677 mas/yr |
| Parallax (π) | −0.0098±0.0310 mas |
| Absolute magnitude (MV) | −6.6 |
| Details | |
| Mass | 130 M☉ |
| Radius | 18 R☉ |
| Luminosity | 2.2 million L☉ |
| Surface gravity (log g) | 4.0 cgs |
| Temperature | 52,500 K |
| Metallicity | ≤0.1 He/H |
| Rotation | 173 |
| Other designations | |
| GCRV 24403, RMC 122, UBV 5767, ARDB C54, SK −67° 211, UCAC2 2218036, ARDB 317, GSC 09162-00101, TYC 9162-101-1, CSI−67-05351, 2MASS J05351389-6733275, UBV M 28781 | |
| Database references | |
| SIMBAD | data |
HD 269810 is a blue giant star in the Large Magellanic Cloud. It is one of the most massive and most luminous stars known, and one of only a handful of stars with the spectral type O2. The star's name, HD 269810, comes from the Henry Draper Catalogue. The serial number 269810 indicates it was published in the extension of the catalogue and is formally referred to as HDE 269810.