www.bbc.co.uk/news/science-environment-25860454
Quote: It was discovered by undergraduates during a telescope class at the University of London Observatory. "One minute we're eating pizza then five minutes later we've helped to discover a supernova. I couldn't believe it," said student Tom Wright.
Apparently it could be visible via binoculars to anyone who knows which bit of the night sky to look at (which I don't).