Raymond Smith Dugan (May 30, 1878 – August 31, 1940) was an American astronomer and discoverer of minor planets.
[2] His parents were Jeremiah Welby and Mary Evelyn Smith and he was born in Montague in the U.S. state of Massachusetts.
[4] At the time, the observatory at Heidelberg was a center of asteroid discovery under Max Wolf.
Dugan co-wrote an influential two-volume textbook in 1927 with Henry Norris Russell and John Quincy Stewart called Astronomy: A Revision of Young’s Manual of Astronomy (Ginn & Co., Boston, 1926–27, 1938, 1945).
[citation needed] There are two volumes: the first is The Solar System and the second is Astrophysics and Stellar Astronomy.