About: John A. O'Keefe (astronomer)

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John Aloysius O'Keefe III (1916–2000) was an expert in planetary science and astrogeology with the National Aeronautics and Space Administration (NASA) from 1958 to 1995. He and his co-authors, Ann Eckels and Ken Squires, are credited with the discovery that the Earth had a significant third degree zonal spherical harmonic in its gravitational field using U.S. Vanguard 1 satellite data collected in the late 1950s. The Earth's pear shape as it was known became front-page news and was even the subject of a "Peanuts" cartoon. For that, he is credited as the "father of space geodesy".

Attributes	Values
rdf:type	Thing
rdfs:label	John Aloysius O'Keefe (it) John A. O'Keefe (astronomer) (en) John A. O'Keefe (fr)
rdfs:comment	John Aloysius O'Keefe (13 ottobre 1916 – 8 settembre 2000) è stato un astronomo e geodeta statunitense. (it) John Aloysius O'Keefe III (1916–2000) was an expert in planetary science and astrogeology with the National Aeronautics and Space Administration (NASA) from 1958 to 1995. He and his co-authors, Ann Eckels and Ken Squires, are credited with the discovery that the Earth had a significant third degree zonal spherical harmonic in its gravitational field using U.S. Vanguard 1 satellite data collected in the late 1950s. The Earth's pear shape as it was known became front-page news and was even the subject of a "Peanuts" cartoon. For that, he is credited as the "father of space geodesy". (en) John Aloysius O'Keefe III, né le 13 octobre 1916 à Lynn (Massachusetts, États-Unis) et mort le 8 septembre 2000 à Sioux Falls (Dakota du Sud, États-Unis), fut expert en planétologie et en astrogéologie auprès de la National Aeronautics and Space Administration (NASA) de 1958 à 1995. Il a été le premier à proposer l'idée d'un en 1956 et il est le co-découvreur de l'effet YORP (abréviation de Yarkovsky-O'Keefe-Radzievskii-Paddock effect), un effet résultant de la lumière du Soleil qui accélère ou ralentit la rotation d'un petit corps tel qu'un astéroïde. (fr)
dcterms:subject	2000 deaths 1916 births American astronomers Harvard College alumni University of Chicago alumni Harvard College Observatory people American geodesists American Roman Catholics NASA people Phillips Exeter Academy alumni
Wikipage page ID	2476045 (xsd:integer)
Wikipage revision ID	1107742463 (xsd:integer)
Link from a Wikipage to another Wikipage	Satellite geodesy Brenau University Ann E. Bailie Pete Conrad Robert Jastrow University of Chicago Vanguard 1 2000 deaths Goddard Space Flight Center Moon Apollo 12 1916 births American astronomers Harvard College alumni University of Chicago alumni Harvard College Observatory people Harvard College Observatory Earth's gravity Earth's pear shape American geodesists Roman Catholic Harlow Shapley Harvard Tektites Tet Offensive American Roman Catholics NASA people Phillips Exeter Academy alumni Chevy Chase, Maryland Yerkes Observatory Impact craters National Aeronautics and Space Administration William M. Kaula Planetary science Yarkovsky-O'Keefe-Radzievskii-Paddack effect Eugene Shoemaker Space geodesy Project Apollo Astrogeology Abbey School Zonal spherical harmonic Exeter Academy
sameAs	John A. O'Keefe (astronomer) John A. O'Keefe (astronomer) John A. O'Keefe (astronomer) John A. O'Keefe (astronomer) John A. O'Keefe (astronomer) John A. O'Keefe (astronomer) John A. O'Keefe (astronomer) John A. O'Keefe (astronomer)
dbp:wikiPageUsesTemplate	dbt:Authority_control dbt:More_citations_needed dbt:Reflist dbt:Self-published_inline
has abstract	John Aloysius O'Keefe III (1916–2000) was an expert in planetary science and astrogeology with the National Aeronautics and Space Administration (NASA) from 1958 to 1995. He and his co-authors, Ann Eckels and Ken Squires, are credited with the discovery that the Earth had a significant third degree zonal spherical harmonic in its gravitational field using U.S. Vanguard 1 satellite data collected in the late 1950s. The Earth's pear shape as it was known became front-page news and was even the subject of a "Peanuts" cartoon. For that, he is credited as the "father of space geodesy". He was the first to propose the idea of a scanning microscope in 1956 and he is the co-discoverer of the YORP effect (short for Yarkovsky-O’Keefe-Radzievskii-Paddock effect), an effect resulting from sunlight which causes a small celestial body such as an asteroid or meteor to spin up or down. (en) John Aloysius O'Keefe III, né le 13 octobre 1916 à Lynn (Massachusetts, États-Unis) et mort le 8 septembre 2000 à Sioux Falls (Dakota du Sud, États-Unis), fut expert en planétologie et en astrogéologie auprès de la National Aeronautics and Space Administration (NASA) de 1958 à 1995. Lui et ses co-auteurs, et , sont crédités de la découverte que la Terre avait une significative au troisième degré dans son en utilisant les données du satellite américain Vanguard 1 collectées à la fin des années 1950. La forme de poire de la Terre, comme on l'appelait, a fait la une des journaux et a même fait l'objet d'un cartoon de Peanuts. Pour cela, il est crédité comme le « père de la ». Il a été le premier à proposer l'idée d'un en 1956 et il est le co-découvreur de l'effet YORP (abréviation de Yarkovsky-O'Keefe-Radzievskii-Paddock effect), un effet résultant de la lumière du Soleil qui accélère ou ralentit la rotation d'un petit corps tel qu'un astéroïde. (fr) John Aloysius O'Keefe (13 ottobre 1916 – 8 settembre 2000) è stato un astronomo e geodeta statunitense. (it)
schema:sameAs	John A. O'Keefe (astronomer)
prov:wasDerivedFrom	wikipedia-en:John_A._O'Keefe_(astronomer)?oldid=1107742463&ns=0
page length (characters) of wiki page	8411 (xsd:nonNegativeInteger)
foaf:isPrimaryTopicOf	wikipedia-en:John_A._O'Keefe_(astronomer)
is Link from a Wikipage to another Wikipage of	Ann E. Bailie Paul D. Lowman John O'Keefe 1913 Great Meteor Procession Geodesy Edward Hutchinson Synge Lunar distance (astronomy) Meanings of minor planet names: 6001–7000 List of American scientists Figure of the Earth Tektite Irene Fischer Asimov's Biographical Encyclopedia of Science and Technology Near-field scanning optical microscope Scientific phenomena named after people Yarkovsky–O'Keefe–Radzievskii–Paddack effect John Aloysius O'Keefe
is Wikipage redirect of	John Aloysius O'Keefe
is foaf:primaryTopic of	wikipedia-en:John_A._O'Keefe_(astronomer)

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