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| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Dorado |
| Right ascension | 05h 38m 39.144s[1] |
| Declination | −69° 06′ 21.30″[1] |
| Apparent magnitude (V) | 13.38[2] |
| Characteristics | |
| Evolutionary stage | Wolf–Rayet star |
| Spectral type | WN6[3] |
| B−V color index | -0.10[2] |
| Astrometry | |
| Proper motion (μ) | RA: 1.680[1] mas/yr Dec.: 0.512[1] mas/yr |
| Parallax (π) | 0.0288 ± 0.0159 mas[1] |
| Distance | 165,000 ly (50,600 pc) |
| Absolute magnitude (MV) | -8.11[3] |
| Absolute bolometric magnitude (Mbol) | -12.0[3] |
| Details | |
| Mass | 226 (highly uncertain)[3] M☉ |
| Radius | 37.5[3] R☉ |
| Luminosity | 5,000,000[3] L☉ |
| Luminosity (visual, LV) | 141,000[3] L☉ |
| Temperature | 45,000[3] K |
| Age | 7.5[4] Myr |
| Other designations | |
| Database references | |
| SIMBAD | data |
BAT99-98 is a Wolf–Rayet star located in the Large Magellanic Cloud, in NGC 2070 near the R136 cluster in the Tarantula Nebula (30 Doradus). At 226 M☉ and 5,000,000 L☉ it is the most massive known star, and close to one of the most luminous stars currently known.[3]
- ^ a b c d e Brown, A. G. A.; et al. (Gaia collaboration) (2021). "Gaia Early Data Release 3: Summary of the contents and survey properties". Astronomy & Astrophysics. 649: A1. arXiv:2012.01533. Bibcode:2021A&A...649A...1G. doi:10.1051/0004-6361/202039657. S2CID 227254300. (Erratum: doi:10.1051/0004-6361/202039657e). Gaia EDR3 record for this source at VizieR.
- ^ a b Doran, E. I.; Crowther, P. A.; de Koter, A.; Evans, C. J.; McEvoy, C.; Walborn, N. R.; Bastian, N.; Bestenlehner, J. M.; Grafener, G.; Herrero, A.; Kohler, K.; Maiz Apellaniz, J.; Najarro, F.; Puls, J.; Sana, H.; Schneider, F. R. N.; Taylor, W. D.; van Loon, J. Th.; Vink, J. S. (2013). "The VLT-FLAMES Tarantula Survey – XI. A census of the hot luminous stars and their feedback in 30 Doradus". Astronomy & Astrophysics. 558: A134. arXiv:1308.3412v1. Bibcode:2013A&A...558A.134D. doi:10.1051/0004-6361/201321824. S2CID 118510909.
- ^ a b c d e f g h i Hainich, R.; Rühling, U.; Todt, H.; Oskinova, L. M.; Liermann, A.; Gräfener, G.; Foellmi, C.; Schnurr, O.; Hamann, W. -R. (2014). "The Wolf–Rayet stars in the Large Magellanic Cloud". Astronomy & Astrophysics. 565: A27. arXiv:1401.5474. Bibcode:2014A&A...565A..27H. doi:10.1051/0004-6361/201322696. S2CID 55123954.
- ^ Selman, F. J.; Melnick, J. (2005). "The IMF of the field population of 30 Doradus". Astronomy and Astrophysics. 443 (3): 851. Bibcode:2005A&A...443..851S. doi:10.1051/0004-6361:20042173. S2CID 120118444.