Omega Cen­tauri Cluster

Omega Cen­tauri (ω Cen, NGC 5139, or Cald­well 80) is a glob­u­lar cluster in the con­stel­la­tion of Cen­taur­us that was first iden­ti­fied as a non-stel­lar object by Edmond Hal­ley in 1677. Loc­ated at a dis­tance of 17,090 light-years (5,240 par­secs), it is the largest-known glob­u­lar cluster in the Milky Way at a dia­met­er of roughly 150 light-years. It is estim­ated to con­tain approx­im­ately 10 mil­lion stars, and a total mass equi­val­ent to 4 mil­lion sol­ar masses, mak­ing it the most massive-known glob­u­lar cluster in the Milky Way.

[descrip­tion from wikipedia]