Melnick 42

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Melnick 42
Observation data
Epoch J2000      Equinox J2000
Constellation Dorado
Right ascension 05h 38m 38s
Declination -69° 05′ 42″
Apparent magnitude (V) 10.96 (12.84[1])
Spectral type O3If/WN (O2If*[2])
B−V color index 0.12
Distance ±170,000 ly
(±52,000 pc)
Absolute magnitude (MV) -6.93[3]
Mass 113[3] M
Radius 21.1[3] R
Luminosity 2,500,000[3] L
Temperature 50,000[3] K
Age ~1 million[1] years
Other designations
MK42, Brey 77, BAT99 105
Database references

Melnick 42 is a massive blue supergiant star in the Tarantula Nebula in the Large Magellanic Cloud located in the constellation Dorado. With its bolometric luminosity of ca. 2,500,000 it is one of the most luminous stars of the Tarantula Nebula.


  1. ^ a b Crowther, P. A.; Schnurr, O.; Hirschi, R.; Yusof, N.; Parker, R. J.; Goodwin, S. P.; Kassim, H. A. (2010). "The R136 star cluster hosts several stars whose individual masses greatly exceed the accepted 150 M stellar mass limit". Monthly Notices of the Royal Astronomical Society 408 (2): 731. arXiv:1007.3284. Bibcode:2010MNRAS.408..731C. doi:10.1111/j.1365-2966.2010.17167.x.  edit
  2. ^ Crowther, P. A.; Walborn, N. R. (2011). "Spectral classification of O2-3.5 If*/WN5-7 stars". Monthly Notices of the Royal Astronomical Society 416 (2): 1311. arXiv:1105.4757. Bibcode:2011MNRAS.416.1311C. doi:10.1111/j.1365-2966.2011.19129.x.  edit
  3. ^ a b c d e 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: A comprehensive analysis of the WN class". arXiv:1401.5474v1 [astro-ph.SR].