Nicholson, Seth B. (Seth Barnes), 1891-1963

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Seth Barnes Nicholson was born in Springfield, Illinois on November 21, 1891. He received his Bachelors in Science from Drake University, Des Moines Indiana in 1911 and his Ph.D. from the University of California in 1914. He discovered Sinope, the ninth moon of Jupiter, while observing the seventh moon, Pasiphaë, at Lick Observatory. The computation of its orbit was the subject of his Ph.D. thesis. Nicholson went on to discover three other moons of Jupiter, along with two asteroids, during his decades' long career at the Wilson Observatory. His main focus at Wilson Observatory was to monitor solar activity and he wrote the annual sunspot activity reports for most of his career. He made significant discoveries regarding sunspots, especially in regards to their magnetic properties and terrestrial effects. Nicholson served as the editor of the Publications of the Astronomical Society of the Pacific from 1943 to 1955 and was twice the president of the society. He was awarded the Bruce Medal in 1963, the year he died in Los Angeles.

From the description of Papers of Seth Barnes Nicholson, 1914-1963. (Huntington Library, Art Collections & Botanical Gardens). WorldCat record id: 712919209

Archival Resources
Role Title Holding Repository
creatorOf Nicholson, Seth B. (Seth Barnes), 1891-1963. Papers of Seth Barnes Nicholson, 1914-1963. Huntington Library, Art Collections & Botanical Gardens
creatorOf McMath, Robert R. (Robert Raynolds), 1891-1962. Robert R. McMath papers, 1916-1962. Bentley Historical Library
creatorOf Hale, George Ellery, 1868-1938. Mount Wilson Director's papers, 1901-1925. Huntington Library, Art Collections & Botanical Gardens
creatorOf Pettit, Edison, 1889-1962. Papers of Edison Pettit, 1920-1969. Huntington Library, Art Collections & Botanical Gardens
referencedIn Harold Phelps Stokes papers, 1908-1969 Yale University. Department of Manuscripts and Archives
referencedIn Robert R. McMath Papers, 1916-1962 Bentley Historical Library
Role Title Holding Repository
Relation Name
associatedWith Abetti, Giorgio, 1882-1982. person
associatedWith Aitken, Robert Grant, 1864-1951. person
associatedWith Ashbrook, Joseph, 1980. person
associatedWith Astronomical Society of the Pacific, corporateBody
associatedWith Bowen, Ira Sprague, 1898-1973. person
associatedWith Carnegie Institution of Washington. corporateBody
associatedWith Einarsson, Sturla. person
associatedWith Federer, Charles, 1909-. person
associatedWith Hale, George Ellery, 1868-1938. person
associatedWith Herget, Paul, 1908-. person
associatedWith Herrick, Samuel, 1911-1974. person
associatedWith Humason, Milton L. (Milton La Salle), 1891-1972. person
associatedWith Jacobsen, Theodor S. person
associatedWith Kiepenheuer, K. O. (Karl Otto) person
associatedWith Kourganoff, V. (Vladimir), 1912-. person
associatedWith Kuiper, Gerard P. (Gerard Peter) , 1905-1973. person
associatedWith Luyten, Willem Jacob, 1899-1944. person
associatedWith McMath, Robert R. (Robert Raynolds), 1891-1962. person
associatedWith Minkowski, Rudolf, 1895-. person
associatedWith Mount Wilson and Palomar Observatories corporateBody
associatedWith Mount Wilson Observatory corporateBody
associatedWith Öhman, Yngve, 1903-. person
associatedWith Oort, Jan Hendrik. person
associatedWith Pease, F. G. (Francis Gladheim), b. 1881. person
associatedWith Pettit, Edison, 1889-1962. person
associatedWith PIckering, William H. (William Henry), b. 1858. person
associatedWith Roemer, Elizabeth, 1929-. person
associatedWith Seares, Frederick Hanley, 1873-, person
associatedWith Shapley, Harlow, 1885-1972. person
associatedWith Stokes, Harold Phelps, 1887-1970. person
associatedWith Struve, Otto, 1897-1963. person
associatedWith Vyssotsky, A. N. (Alexander N.), b.1888. person
associatedWith Whipple, Fred L. (Fred Lawrence), 1906-2004. person
associatedWith Zwicky, F. (Fritz), 1898-1974. person
Place Name Admin Code Country
Icarus (Asteroid)
United States
Pluto (Dwarf planet)
California--Wilson, Mount (Mountain)
Venus (Planet)
Jupiter (Planet)
Astronomical observatories


Birth 1891-11-12

Death 1963-07-02



Ark ID: w6x3734x

SNAC ID: 54116088