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Location of Photo:

El Sauce Observatory, Rio Hurtado Valley, Coquimbo Region, Chile

Date/Time of photo:

April 15, 2024 - 03:53 am UT


Telescope Planewave 24" f/6.5 - Camera QHY 600M


A type II Supernova was discovered on April 11, 2024, by ATLAS in NGC3621. The new transient was mag. 18.915 at the discovery, but it’s rapidly rising. I took this picture last April 15 from a Chilean remote telescope, measuring a mag. 12 (confirmed by Pan-STARRS Group photometry on April 16). Today it’s the brightest SN discovered this year and the closest to Earth since SN 2023ixf, discovered on May 19, 2023. NGC 3621 is a field spiral galaxy located at a distance of approximately 22 million light-years in the constellation Hydra. The galaxy has a diameter of about 93,000 light-years (29,000 pc) and is inclined at an angle of 25° relative to the edge-on view. The image is the sum of 20 sub-frames of 300" (5xeach filter LRGB). Credits Data Telescope Live Processing Massimo Marchini