Supernova candidate

[Doctor Luz]

Is there any supernova candidate in the neighbourhood of the earth, near enough to be able to annihilate us due to the radiation?

Which is the minimum distance a supernova can stay whithout friying us?

anybody knows?

[Phobos]

Off the top of my head, I don't think there are any candidates close enough to be of great concern. Correct me if I'm wrong.

In general, any planets of a star going supernova are going to be deep fried...
http://itss.raytheon.com/cafe/qadir/q1803.html

...planetary systems a few light years away might get very nervous...
http://itss.raytheon.com/cafe/qadir/q347.html

...this same astronomer (all links herein) estimates the danger zone at around 10-50 light years...
http://itss.raytheon.com/cafe/qadir/q2742.html

As for the Earth, Betelgeuse might put on an interesting show but I think we'll be ok...
http://itss.raytheon.com/cafe/qadir/q1380.html