in the constellation Ophiuchus
870 million to 2 billion times the mass of the Sun
Diameter roughly equal to the diameter of Uranus' or Neptune's orbit around the Sun
A combined optical and X-ray view of the twin nuclei of NGC 6240. [NASA/CXC/MPE/S.Komossa et al.; NASA/STScI/R.P.van der Marel, J.Gerssen]
This document was last modified: March 6, 2013.