Asteroid 221, Eos, was discovered on January 18, 1882 by Johann Palisa at Vienna. It has a period of 5 years, 82 days and is 103.87 kilometers in diameter (about 64 1/2 miles).

It was named for Eos, the Greek goddess of the dawn.

Eos ,an 1895 painting by British painter Evelyn de Morgan (1855-1919)

The meaning of asteroid Eos seems to be: early morning, to divert attention, young things, "in the beginning."

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