21p 20180711 ndj

21P is beginning to develop nicely now with a characteristic elongated coma. This image was taken from Chelmsford, UK last night. I get a magnitude of 10.7 now in bright twilight. From darker sites it is brighter than 10 and on course to reach 5th magnitude in September.

Page last updated: Wed 17 Apr 22:58:22 BST 2019