To be considered a PHA, an asteroid must also have an absolute magnitude of 22 or less.
Although a measure of an objects brightness, absolute magnitude can also help to determine an asteroids size.
The largest of the five space rocks is designatedNV16, and its been known to astronomers since 2022.
Don’t look up! No seriously, don’t bother. None of the five asteroids are big enough to see from Earth.© NASA
ET on Thursday, October 24.
TR6 will keep a greater distance, coming no closer than 3.5 million miles (5.6 million kilometers).
News from the future, delivered to your present.
As for the Moon, not so much.
