SN 2021hpr

SN 2021hpr was a type Ia supernova located in the Constellation of Draco that occurred in the spiral galaxy NGC 3147 at a distance of about 45 Mpc. Its discovery was reported by amateur astronomer Kōichi Itagaki on April 2, 2021. The progenitor of this supernova was likely a star in a binary star system with a separation of ~15.84 AU.
File:SN2021hprLightCurve.png|thumb|left|A light curve for SN 2021hpr showing the visual and near-infrared brightness, adapted from Barna et al.
The expanding fireball produced by this supernova was homogeneous. This is likely due to the supernova ejecta interacting with its companion object and the surrounding circumstellar medium. The circumstellar medium was metal rich.