Star of Plaskett
Time J2000.0
Other designations
HR 2422, BD+06 1309, HIP 31646, SAO 114146, GC 8631
The Plaskett star (official name HR 2422, V640 Monocerotis) is a spectroscopic binary located at a distance of about 6600 light-years from Earth. It is one of the most massive binary stars known, with a total mass of about 100 solar masses.
It is named after John Stanley Plaskett, the Canadian astronomer who discovered its binary nature in 1922. It has an apparent magnitude of 6.05, and is located in the constellation Unicorn. edit code
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