Asteria — interactive night sky map
Omega Centauri (NGC 5139) is a globular cluster in the constellation Centaurus with an apparent magnitude of 5.3, spanning about 27 arcminutes. Under dark skies it can be spotted with the naked eye.
It is best placed in the evening sky around April. It is visible from the whole southern hemisphere and from northern latitudes up to about 43°N. It is circumpolar (never sets) south of latitude 43°S.