Observing

New nova in Cassiopeia brightens rapidly

19 March 2021 Mark Armstrong

There’s a ‘new star’ – a classical nova – on show among the stars of the far-northern constellation of Cassiopeia. Nova Cas 2021 was discovered on 18 March shining at around magnitude +9.6, but it appears to have brightened rapidly to around magnitude +7.5 on 19 March.