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Joel Hastings Metcalf (January 4, 1866 – February 23, 1925) was an American astronomer, humanitarian and minister.
Reverend Metcalf graduated from Harvard Divinity School in 1892. He served as a Unitarian minister in Burlington, Vermont and in Taunton, Massachusetts, Winchester, Massachusetts and Portland, Maine.
He discovered or co-discovered several comets, including 23P/Brorsen-Metcalf and 97P/Metcalf-Brewington, and also 41 asteroids during 1905–1914, as credited by the Minor Planet Center.
Two of his discoveries, the main-belt asteroids 726 Joëlla and 792 Metcalfia, were named in his honor.
1906PA.....14..211M . An Amateur's Observatory . Metcalf . Joel H. . Popular Astronomy . 1906 . 14 . 211 .
1906ApJ....23..306M. A New Method for the Discovery of Asteroids . Metcalf . Joel H. . The Astrophysical Journal . 1906 . 23 . 306 . 10.1086/141344 . free .
1907ApJ....25..264M. A Photographic Method for the Detection of Variability in Asteroids . Metcalf . Joel H. . The Astrophysical Journal . 1907 . 25 . 264 . 10.1086/141441 .
1912PA.....20..201M. The Asteroid Problem . Metcalf . Joel H. . Popular Astronomy . 1912 . 20 . 201 .
1939PA.....47...22S. Joel H. Metcalf, Clergyman-Astronomer . Stoneham . Rachel Metcalf . Popular Astronomy . 1939 . 47 . 22 .