A team of researchers using data from ESA's XMM-Newton X-ray space observatory, NASA's Chandra X-ray Observatory and NASA's Swift X-Ray Telescope has found evidence for the existence of an intermediate-mass black hole (IMBH).
Fast Facts for J2150:
Scale: About 36 arcsec across (129,000 light years)
Category: Black Holes
Coordinates (J2000): RA 21h 50m 22.5s | Dec -5° 51´ 08.2"
Observation Date: September 14, 2016
Observation Time: 21 hours 25 minutes
Obs. ID: 17862
References: D. Lin et al., "A Luminous X-ray Outburst From an Intermediate-mass Black Hole In An Off-centre Star Cluster", Nature (sub, 14, Jun 2018). arXiv:1806.05692
Color Code: X-ray: Purple; Optical: Gold
Distance Estimate: About 740 million light years