Aten asteroid

Aten asteroid

noun Astronomy.
one of a small group of asteroids whose orbits cross that of the earth and whose semimajor axes are smaller than that of the earth.
Compare Apollo asteroid.
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Aten asteroid is always a great word to know.
So is doohickey. Does it mean:
a children's mummer's parade, as on the Fourth of July, with prizes for the best costumes.
a gadget; dingus; thingumbob.
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