What type of star was the progenitor of Supernova 1987A?

Answer

Sanduleka Star (a blue supergiant).

The progenitor of SN 1987A, identified as Sanduleka Star, was a blue supergiant which possessed a complex history of mass ejection prior to its catastrophic end.

What type of star was the progenitor of Supernova 1987A?
starsexpansionastrophysicssupernova remnantsshock waves