Asteroid Passing Earth On March 5 Might Come Close

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This is a known 100 foot asteroid that last went by in 2013 at 1.3 million miles. This time the estimates are for anywhere between 11,000 to 9 million miles. I now see why NASA recently setup the Planetary Defense Coordination Office if they can't estimate better than +/- 9 million miles for the thousands of near earth asteroids.