Astrophytum have been in flower continuously. This is an asterias cv miracle kabuto.
Miracle kabuto is similar to super kabuto but it has finer white flecks than that of super kabuto. Miracle kabuto is a sort of monstrosa and was started from just 1 plant. It was mixed with various asteria in history. Because of that, you can not expect that all seedlings are miracle kabutos. I normally select good miralce kabutos when seedlings are 3 years old.