 An image from the Two Micron All-Sky Survey. HD 269810 is the upper left of the pair of bright stars to the upper right of the nebulosity. | |
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Dorado |
| Right ascension | 05h 35m 13.90s[1] |
| Declination | −67° 33′ 27.5″[1] |
| Apparent magnitude (V) | 12.22[2] |
| Characteristics | |
| Spectral type | O2III(f*)[3] |
| B−V color index | −0.14[2] |
| Astrometry | |
| Radial velocity (Rv) | 303[4] km/s |
| Proper motion (μ) | RA: +1.801[1] mas/yr Dec.: +0.677[1] mas/yr |
| Parallax (π) | −0.0098 ± 0.0310 mas[1] |
| Absolute magnitude (MV) | −6.6[3] |
| Details | |
| Mass | 130[3] M☉ |
| Radius | 18[5] R☉ |
| Luminosity | 2.2 million[3] L☉ |
| Surface gravity (log g) | 4.0[3] cgs |
| Temperature | 52,500[3] K |
| Metallicity | ≤0.1[3] He/H |
| Rotation | 173[6] |
| Other designations | |
| 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.
- ^ a b c d e Vallenari, A.; et al. (Gaia collaboration) (2023). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy and Astrophysics. 674: A1. arXiv:2208.00211. Bibcode:2023A&A...674A...1G. doi:10.1051/0004-6361/202243940. S2CID 244398875. Gaia DR3 record for this source at VizieR.
- ^ a b Zacharias, N.; Finch, C. T.; Girard, T. M.; Henden, A.; Bartlett, J. L.; et al. (February 2013). "The Fourth US Naval Observatory CCD Astrograph Catalog (UCAC4)". The Astronomical Journal. 145 (2): 44. arXiv:1212.6182. Bibcode:2013AJ....145...44Z. doi:10.1088/0004-6256/145/2/44. S2CID 119299381.
Zacharias, N.; Finch, C. T.; Girard, T. M.; Henden, A.; Bartlett, J. L.; et al. (July 2012). "VizieR On-line Data Catalog: UCAC4 Catalogue". VizieR On-line Data Catalog: I/322A. 1322. Bibcode:2012yCat.1322....0Z. - ^ a b c d e f g Evans, C. J.; Walborn, N. R.; Crowther, P. A.; Hénault-Brunet, V.; Massa, D.; et al. (June 2010). "A Massive Runaway Star from 30 Doradus". The Astrophysical Journal Letters. 715 (2): L74–L79. arXiv:1004.5402. Bibcode:2010ApJ...715L..74E. doi:10.1088/2041-8205/715/2/L74. S2CID 118498849.
- ^ Ardeberg, A.; Brunet, J. P.; Maurice, E.; Prevot, L. (July 1972). "Spectrographic and photometric observations of supergiants and foreground stars in the direction of the Large Magellanic Cloud". Astronomy and Astrophysics Supplement Series. 6: 249. Bibcode:1972A&AS....6..249A.
- ^ Walborn, N. R.; Morrell, N. I.; Howarth, I. D.; Crowther, P. A.; Lennon, D. J.; et al. (June 2004). "A CNO Dichotomy among O2 Giant Spectra in the Magellanic Clouds". The Astrophysical Journal. 608 (2): 1028–1038. arXiv:astro-ph/0403557. Bibcode:2004ApJ...608.1028W. doi:10.1086/420761. S2CID 16656083.
- ^ Penny, L. R.; Sprague, A. J.; Seago, G.; Gies, D. R. (December 2004). "Effects of Metallicity on the Rotational Velocities of Massive Stars". The Astrophysical Journal. 617 (2): 1316–1322. arXiv:astro-ph/0409757. Bibcode:2004ApJ...617.1316P. doi:10.1086/425573. S2CID 14026671.