Matches in DBpedia 2014 for { ?s ?p NGC 3603-A1 is a massive, double-eclipsing binary star system located in NGC 3603, about 20,000 light years from Earth. Its two component stars circle each other every 3.77 days. The mass of NGC 3603-A1a is 116 ± 31 solar masses and 89 ± 16 solar masses for NGC 3603-A1b. This makes them the two most massive stars directly measured so far, i.e. their masses have been determined (using Keplerian orbits), and not estimated. Both show an emission-line spectrum (spectral type WN6h).. }
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- NGC_3603-A1 comment "NGC 3603-A1 is a massive, double-eclipsing binary star system located in NGC 3603, about 20,000 light years from Earth. Its two component stars circle each other every 3.77 days. The mass of NGC 3603-A1a is 116 ± 31 solar masses and 89 ± 16 solar masses for NGC 3603-A1b. This makes them the two most massive stars directly measured so far, i.e. their masses have been determined (using Keplerian orbits), and not estimated. Both show an emission-line spectrum (spectral type WN6h).".