Asteroide com lua propria!?

This is an artists impression of another binary asteroid system known as Ida Dactyl - the main rock is called Ida and the tiny moon is known as Dactyl

Campo magnetico, força gravitacional ou vácuo criado no espaço curvado pela trajetória do asteroide?

https://www.dailymail.co.uk/sciencetech/article-8003973/Asteroid-bigger-Empire-State-Building-miniature-satellite.html?ns_mchannel=rss&ico=taboola_feed