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HDE 316285
HDE 316285 is a blue supergiant or hypergiant star in the constellation Sagittarius. It had been misclassified as a planetary nebula. It has been identified as a possible type II supernova candidate in modelling of the fate of stars 20 to 25 times the mass of the Sun (with LBV status as the predicted final stage beforehand). It has been calculated to be losing mass at the rate of 20 solar masses over 10,000 years via its stellar wind. ==References==
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