M82 X-1

M82 X-1 is an ultra-luminous X-ray source located in the galaxy M82. It is a candidate intermediate-mass black hole, with the exact mass estimate varying from around 100 to 1000 solar masses.^[1][2][3] One of the most luminous ULXs ever known, its luminosity exceeds the Eddington limit for a stellar mass object.

M82 X-1

Observation data Epoch J2000.0      Equinox J2000.0 (ICRS)
Constellation	Ursa Major
Right ascension	09h 55m 50.01s
Declination	69° 40′ 46.0″
Database references
SIMBAD	data

See also

• M82 X-2