SN 2004GT was a type Ic supernova that happened in the interacting galaxy NGC 4038 on December 12, 2004.

The event occurred in a region of condensed matter in the western spiral arm.

[2] The progenitor was not identified from older images of the galaxy, and is either a type WC Wolf-Rayet star with a mass over 40 times that of the Sun, or a star 20 to 40 times as massive as the Sun in a binary star system.

[3] This variable star–related article is a stub.

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