ProjectBlueBook
Adept
Don't worry asteroid 3122 Florence will safely pass at over 18 times the distance from the earth to the moon, but you could see it through a small scope or binoculars.
More info on how to see it:
Big asteroid to sweep close September 1 | EarthSky.org
Large Asteroid Florence Will Fly by Earth on September 1
More info on how to see it:
Big asteroid to sweep close September 1 | EarthSky.org
Large Asteroid Florence Will Fly by Earth on September 1
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