Part 4/7:
Current assessments of the asteroid's dimensions have relied on terrestrial telescopes, which only measure the light reflected off the asteroid. This method can yield inaccuracies—much like the difference between a 40-meter and a 90-meter asteroid, which are fundamentally different in the level of threat they pose. Consequently, gaining accurate measurements of 2024 YR4's size is imperative for understanding the potential consequences of any impact.