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- Daniel_Kirkwood abstract "Daniel Kirkwood (September 27, 1814 – June 11, 1895) was an American astronomer.Kirkwood was born in Harford County, Maryland to John and Agnes (née Hope) Kirkwood. He graduated in mathematics from the York County Academy in York, Pennsylvania in 1838. After teaching there for five years, he became Principal of the Lancaster High School in Lancaster, Pennsylvania, and after another five years he moved on to become Principal of the Pottsville Academy in Pottsville, Pennsylvania. In 1851 he became Professor of Mathematics at Delaware College and in 1856 Professor of Mathematics at Indiana University in Bloomington, Indiana, where he stayed until his retirement in 1886, with the exception of two years, 1865–1867, at Jefferson College in Canonsburg, Pennsylvania.Kirkwood's most significant contribution came from his study of asteroid orbits. When arranging the then-growing number of discovered asteroids by their distance from the Sun, he noted several gaps, now named Kirkwood gaps in his honor, and associated these gaps with orbital resonances with the orbit of Jupiter. Further, Kirkwood also suggested a similar dynamic was responsible for Cassini Division in Saturn's rings, as the result of a resonance with one of Saturn's moons. In the same paper, he was the first to correctly posit that the material in meteor showers is cometary debris.Kirkwood also identified a pattern relating the distances of the planets to their rotation periods, which was called Kirkwood's Law. This discovery earned Kirkwood an international reputation among astronomers; he was dubbed \"the American Kepler\" by Sears Cook Walker, who claimed that Kirkwood's Law proved the widely held Solar Nebula Theory. The \"Law\" has since become discredited as new measurements of planetary rotation periods have shown that the pattern doesn't hold.In 1891, at age 77, he became a lecturer in astronomy at Stanford University. He died in Riverside, California in 1895.Altogether he wrote 129 publications, including three books. The asteroid 1951 AT was named 1578 Kirkwood in his honor and so was the lunar impact crater Kirkwood, as well as Indiana University's Kirkwood Observatory. He is buried in the Rose Hill Cemetery in Bloomington, Indiana, where Kirkwood Avenue is named for him.Kirkwood was a cousin of Iowa governor Samuel Jordan Kirkwood who became United States Secretary of the Interior under President James A. Garfield and President Chester A. Arthur.".
- Daniel_Kirkwood almaMater York,_Pennsylvania.
- Daniel_Kirkwood birthDate "1814-09-27".
- Daniel_Kirkwood birthPlace Harford_County,_Maryland.
- Daniel_Kirkwood deathDate "1895-06-11".
- Daniel_Kirkwood deathPlace Riverside,_California.
- Daniel_Kirkwood field Astronomy.
- Daniel_Kirkwood knownFor Kirkwood_gap.
- Daniel_Kirkwood nationality United_States.
- Daniel_Kirkwood thumbnail Daniel_Kirkwood.jpg?width=300.
- Daniel_Kirkwood wikiPageExternalLink the-american-kepler.
- Daniel_Kirkwood wikiPageID "744677".
- Daniel_Kirkwood wikiPageLength "5752".
- Daniel_Kirkwood wikiPageOutDegree "55".
- Daniel_Kirkwood wikiPageRevisionID "703402197".
- Daniel_Kirkwood wikiPageWikiLink 1578_Kirkwood.
- Daniel_Kirkwood wikiPageWikiLink Asteroid.
- Daniel_Kirkwood wikiPageWikiLink Astronomer.
- Daniel_Kirkwood wikiPageWikiLink Astronomical_Society_of_the_Pacific.
- Daniel_Kirkwood wikiPageWikiLink Astronomy.
- Daniel_Kirkwood wikiPageWikiLink Bloomington,_Indiana.
- Daniel_Kirkwood wikiPageWikiLink Canonsburg,_Pennsylvania.
- Daniel_Kirkwood wikiPageWikiLink Category:1814_births.
- Daniel_Kirkwood wikiPageWikiLink Category:1895_deaths.
- Daniel_Kirkwood wikiPageWikiLink Category:American_astronomers.
- Daniel_Kirkwood wikiPageWikiLink Category:Indiana_University_faculty.
- Daniel_Kirkwood wikiPageWikiLink Category:People_from_Harford_County,_Maryland.
- Daniel_Kirkwood wikiPageWikiLink Category:Planetary_scientists.
- Daniel_Kirkwood wikiPageWikiLink Category:Presidents_of_the_University_of_Delaware.
- Daniel_Kirkwood wikiPageWikiLink Category:Washington_&_Jefferson_College_faculty.
- Daniel_Kirkwood wikiPageWikiLink Chester_A._Arthur.
- Daniel_Kirkwood wikiPageWikiLink Comet.
- Daniel_Kirkwood wikiPageWikiLink Formation_and_evolution_of_the_Solar_System.
- Daniel_Kirkwood wikiPageWikiLink Frank_K._Edmondson.
- Daniel_Kirkwood wikiPageWikiLink Harford_County,_Maryland.
- Daniel_Kirkwood wikiPageWikiLink Indiana_University_Bloomington.
- Daniel_Kirkwood wikiPageWikiLink Iowa.
- Daniel_Kirkwood wikiPageWikiLink James_A._Garfield.
- Daniel_Kirkwood wikiPageWikiLink Johannes_Kepler.
- Daniel_Kirkwood wikiPageWikiLink Jupiter.
- Daniel_Kirkwood wikiPageWikiLink Kirkwood_(crater).
- Daniel_Kirkwood wikiPageWikiLink Kirkwood_Observatory.
- Daniel_Kirkwood wikiPageWikiLink Kirkwood_gap.
- Daniel_Kirkwood wikiPageWikiLink Lancaster,_Pennsylvania.
- Daniel_Kirkwood wikiPageWikiLink Mercury_(magazine).
- Daniel_Kirkwood wikiPageWikiLink Meteor_shower.
- Daniel_Kirkwood wikiPageWikiLink Moons_of_Saturn.
- Daniel_Kirkwood wikiPageWikiLink Orbital_resonance.
- Daniel_Kirkwood wikiPageWikiLink Planet.
- Daniel_Kirkwood wikiPageWikiLink Pottsville,_Pennsylvania.
- Daniel_Kirkwood wikiPageWikiLink Rings_of_Saturn.
- Daniel_Kirkwood wikiPageWikiLink Riverside,_California.
- Daniel_Kirkwood wikiPageWikiLink Samuel_J._Kirkwood.
- Daniel_Kirkwood wikiPageWikiLink Sears_Cook_Walker.
- Daniel_Kirkwood wikiPageWikiLink Stanford_University.
- Daniel_Kirkwood wikiPageWikiLink United_States_Secretary_of_the_Interior.
- Daniel_Kirkwood wikiPageWikiLink University_of_Delaware.
- Daniel_Kirkwood wikiPageWikiLink Washington_&_Jefferson_College.
- Daniel_Kirkwood wikiPageWikiLink York,_Pennsylvania.
- Daniel_Kirkwood wikiPageWikiLinkText "Daniel Kirkwood".
- Daniel_Kirkwood wikiPageWikiLinkText "Kirkwood, Daniel".
- Daniel_Kirkwood almaMater "York County Academy, York, PA".
- Daniel_Kirkwood birthDate "1814-09-27".
- Daniel_Kirkwood birthPlace Harford_County,_Maryland.
- Daniel_Kirkwood caption "Daniel Kirkwood".
- Daniel_Kirkwood deathDate "1895-06-11".
- Daniel_Kirkwood deathPlace Riverside,_California.
- Daniel_Kirkwood field "astronomy, mathematics".
- Daniel_Kirkwood id "Kirkwood,+Daniel".
- Daniel_Kirkwood imageSize "99".
- Daniel_Kirkwood knownFor "Discovery of the Kirkwood Gaps.".
- Daniel_Kirkwood name "Daniel Kirkwood".
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- Daniel_Kirkwood workInstitutions University_of_Delaware.
- Daniel_Kirkwood workInstitutions "Indiana University".
- Daniel_Kirkwood workInstitutions "Jefferson College".
- Daniel_Kirkwood workInstitutions "Stanford University".
- Daniel_Kirkwood subject Category:1814_births.
- Daniel_Kirkwood subject Category:1895_deaths.
- Daniel_Kirkwood subject Category:American_astronomers.
- Daniel_Kirkwood subject Category:Indiana_University_faculty.
- Daniel_Kirkwood subject Category:People_from_Harford_County,_Maryland.
- Daniel_Kirkwood subject Category:Planetary_scientists.
- Daniel_Kirkwood subject Category:Presidents_of_the_University_of_Delaware.
- Daniel_Kirkwood subject Category:Washington_&_Jefferson_College_faculty.
- Daniel_Kirkwood hypernym Kirkwood.
- Daniel_Kirkwood type Agent.
- Daniel_Kirkwood type Person.
- Daniel_Kirkwood type President.