Asteroid 4340, Dence, was discovered on May 4, 1986 by Carolyn S. Shoemaker at Palomar Mountain Observatory. It has a period of 3 years, 258 days and is slightly over 5 miles in diameter.

It was named for Canadian geologist Michael R. Dence, a past president of the Royal Society of Canada who did important research on asteroid impacts of Earth.

Michael Dence

Astrologically, according to Henk Middelraad, asteroid Dence seems to be about that which is dense, people who are being dense.

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