Meteor Crater in the Arizona desert was created by an asteroid estimated to be 50 meters diameter. I'd hate to see the size of the crater created by Asteroid BQ6 which is 200 meters diameter - over 4x larger.
4X longest dimension. 64X mass.
Actually it has 4 x 4 x 4 = 64 times the volume and probably 64 times the mass.
Composition of the asteroid has a fair amount to do with the level of damage created, above and beyond size alone.
“I’d hate to see the size of the crater created by Asteroid BQ6 which is 200 meters diameter - over 4x larger”
But it would be smaller at impact to some degree ad it would burn up coming through the atmosphere.