Tags: Star.
HD 168476 (also known as PV Telescopii) is a class B-type (blue) extreme helium star in the constelation Telescopium. It is also the prototype of variable stars called PV Telescopii variables. These are probably post-AGB stars with weak Hydrogen lines and enhanced Helium and Carbon lines. Their variable periods are from a few hours to a few years and as of 2008 there are 12 confirmed PV Telescopii variables.