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52768 (1998 OR2)

On Wednesday morning at 5:56 a.m. (New York Time), the world will receive a reminder that things could always be a lot worse when a 2 kilometer (1.2 mile) asteroid zips by Earth at 31319 kilometers per hour (19,461 miles per hour).  The great boulder goes by the not-very-lovely name 52768 (1998 OR2).  It was discovered in 1998 by NASA’s Center for Near-Earth Object Studies, a program established to protect the denizens of Earth from possible space collisions (although our current terrestrial troubles suggest we may need to get our act together a bit better if we ever hope to, you know, actually do anything if one of these things comes straight towards us).

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“But I voted to make dinosaurs great again!”

Fortunately during this pass-by, the asteroid will be a comfortable 6.3 million kilometers (3.9 million miles) away.  That sounds disturbingly close, but it is really 16 times farther than the moon. Astronomers are carefully measuring the fly-by though, in order to learn what they can about asteroids, and because 52768 (1998 OR2) will be back…and next time it will be much closer.  In 2079 it will probably be 3.5 times closer than it is this time, so mark your calendars for that: it might be a bit more exciting than this time around.