Asteroid 2017 BX was spotted for the first time ever on January 20 and it came within 162,252 miles of us, or a little over two thirds of the way to the moon, as it sailed by Tuesday evening just before 9 p.m. PT.
“Rerun” just barely shows up in the image for the same reason that it wasn’t even discovered until it was fast approaching us -- it’s relatively small and moving very fast. The space rock is estimated to be about the size of a killer whale, between 10 and 40 feet in diameter, and cruising at 17,000 miles per hour, or ten times as fast as a bullet fired from an AK-47.
“Rerun” passes us just a few weeks after another newly discovered asteroid, 2017 AG13, came within about 126,000 miles of us.
Asteroids safely pass by our planet just about every day, but most are several times further away than the moon when they do. For example, a much larger asteroid over a mile in diameter also passed Earth Tuesday, but at a distance of 6 million miles or over 25 times the distance to the moon.
You can watch the rerun of “Rerun” flying by us in the video below:
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This article was originally published on CNET.com.