The term ‘kroner’ typically refers to the currency of Denmark and Norway, but it seems you might be asking about something else in the context of astronomy or star counting. If you’re referring to a specific measure or value named ‘kroner’ in relation to stars, there isn’t a standard unit or concept in astronomy directly linked to this term.
However, if you’re asking about the number of stars, scientists estimate that there are around 100 billion to 400 billion stars in our Milky Way galaxy alone, and there are billions of other galaxies in the universe. It’s important to clarify the context in which ‘kroner’ is being used since it doesn’t traditionally relate to astronomy.