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Fascinating development. Another supernova candidate waiting to brighten our skies.
HD 49798 is in the constellation Puppis about 2.2 degrees from v (nu) Puppis.
SIMBAD lists it as a high mass X-ray binary. It has visual magnitude about 8.25 and its distance is 2810 light years. For comparison, Betelgeuse is about 430 ly distance.
What would happen to the primary if the companion white dwarf goes supernova?
Regards, Rob
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