Is Ison (still) on?

Over the last weeks there has been much talk about a comet called Ison. As Wikipedia tells us “C/2012 S1, also known as Comet ISON or Comet Nevski–Novichonok, is a sungrazing comet discovered on 21 September 2012 by Vitali Nevski (Виталий Невский, Vitebsk, Belarus) and Artyom Novichonok (Артём Новичонок, Kondopoga, Russia). It attracted quite a …