IRAS 05280−6910 (LI-LMC 1100 or NGC 1984-IRS1) is an extreme red supergiant star located in the Large Magellanic Cloud and the open cluster NGC 1984. It is more than 1,300 times larger than the Sun, making it one of the largest stars discovered so far. If placed at the center of the Solar System, its photosphere would engulf the orbit of Jupiter.

Characteristics IRAS 05280−6910 is likely an OH/IR supergiant star. It is the most reddened object in the LMC, and also shows the distinct type of maser signal similar to that of VY Canis Majoris. It has an estimated mass loss rate of per year, one of the highest known for any red supergiant star.

Its exact radius is uncertain. According to one paper, it is 1,367 times the size of the Sun, while another says that it is 1,736 times the size of the Sun. In either case, it is among the largest stars known. IRAS 05280−6910 likely had a mass of 20 to 25 solar masses when it formed.

See also WOH G64 B90 NML Cygni S Persei

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