Yeah, the video says diameter of 500km and the asteroid that killed dinosaurs was estimated to be 10-15km, so in terms of mass that's a factor of (500 / 15) ^ 3

Yeah, the video says diameter of 500km and the asteroid that killed dinosaurs was estimated to be 10-15km, so in terms of mass that's a factor of (500 / 15) ^ 3 = about 37,000.