There seems to be a misunderstanding. "Aitkin" isn't a recognized astronomical object or term related to the solar system. Could you be thinking of something else?

Perhaps you meant:

* Aitken Basin: This is a massive impact basin on the Moon, and it is significant because it's the largest known impact basin in the solar system.

* Aitken, a location: There are locations on Earth named "Aitken" and these may be significant within their specific context, but not in the broader solar system.

Please provide more information so I can help you find the answer you're looking for.