John Monroe Van Vleck (March 4, 1833 – November 4, 1912) was an American mathematician and astronomer.
John Monroe Van Vleck was born on March 4, 1833, in Stone Ridge, New York; he was the son of Peter Van Vleck and Ann Hasbrouck.
[4] He graduated from Wesleyan University in 1850 and began teaching at Greenwich Academy.
In 1869 he was a member of the Solar Eclipse Expedition to Mount Pleasant, Iowa.
[5] His publications include "Tables giving the Positions of the Moon for 1855—'6[clarify]" and for 1878–1891, and similar "Tables giving the Positions of Saturn for 1857 to 1877" contributed to the "American Nautical Almanac".