Hi Alex
I’ve got Bruce Willis on speed dial, just in case we need him and his crew to change the orbit of any rogue NEOs (Near Earth Objects) or worse still, PHAs (Potentially Hazardous Asteroids)! LOL!
I periodically obtain forward looking data on these events from
SpaceWeather as I find it quite interesting, and challenging, to record their fleeting passage against the fixed back ground stars.
What is quite fascinating is that when I first started this as a sub-set of astro photography, the number of PHAs were around 600 and I note from SpaceWeather, the count is now up to 962 as of the date of this post!
From a vague (and tired) memory, I think they are mainly rocky bodies?
Cheers
Dennis