An error has been found in the manual. If you have one of the recent manuals, please check the last item in the table on page 51 (the Brightest Objects in M51 Galaxy Group.). It should be: UGC 8683.
An error has been found in the manual. If you have one of the recent manuals, please check the last item in the table on page 51 (the Brightest Objects in M51 Galaxy Group.). It should be: UGC 8683.