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Lexell

[lek-suh l] /ˈlɛk səl/
noun
1.
Astronomy. a comet that passed closer to the earth than any other comet (1770), but now has an orbit that is too distant from the earth for it to be observed.
Origin
after Anders Jean Lexell (1740-84), Finnish-born mathematician, who calculated its orbit
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Based on the Random House Dictionary, © Random House, Inc. 2014.
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