Kees de Jager

1921 - 2021

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Cornelis "Kees" de Jager (pronounced [ˈkeːz də ˈjaːɣər]; 29 April 1921 – 27 May 2021) was a Dutch astronomer who specialized in predicting solar variation to assess the Sun's impact on future climate. He was the General Secretary of the IAU from 1967 to 1973 and former director of the observatory at Utrecht. Read more on Wikipedia

Since 2007, the English Wikipedia page of Kees de Jager has received more than 25,617 page views. His biography is available in 16 different languages on Wikipedia. Kees de Jager is the 351st most popular astronomer, the 593rd most popular biography from Netherlands and the 15th most popular Astronomer.

Memorability Metrics

  • 26k

    Page Views (PV)

  • 48.42

    Historical Popularity Index (HPI)

  • 16

    Languages Editions (L)

  • 5.09

    Effective Languages (L*)

  • 1.84

    Coefficient of Variation (CV)

Page views of Kees de Jagers by language


Among astronomers, Kees de Jager ranks 351 out of 531Before him are Hugo Gyldén, David Rittenhouse, Sandra Faber, Brian G. Marsden, George Van Biesbroeck, and Johann Friedrich Julius Schmidt. After him are Warren De la Rue, Milorad B. Protić, Philibert Jacques Melotte, Sherburne Wesley Burnham, Hervé Faye, and Paul Götz.

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Among people born in 1921, Kees de Jager ranks 256Before him are Inge Borkh, Maria Gorokhovskaya, Verghese Kurien, Bernard Lown, Mikayil Abdullayev, and Gunnar Eriksson. After him are Jacques Martin, Juan José Arreola, Alfréd Rényi, Carol Channing, Sotiria Bellou, and Francis Blanche. Among people deceased in 2021, Kees de Jager ranks 400Before him are Jonathan Penrose, Jan Sokol, Fofi Gennimata, Wayne Thiebaud, Bernard Lown, and Catherine Tizard. After him are Martín Pando, Marvelous Marvin Hagler, Mansour Ojjeh, Alber Elbaz, Ursula Happe, and Abdelhamid Brahimi.

Others Born in 1921

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In Netherlands

Among people born in Netherlands, Kees de Jager ranks 593 out of 1,427Before him are Heintje Simons (1955), Maruschka Detmers (1962), Willeke Alberti (1945), Constant Nieuwenhuys (1920), Adri van der Poel (1959), and Leonardus Nardus (1868). After him are Johannes Burman (1707), Mark Blaug (1927), Jan de Vries (1890), Gysbert Japiks (1603), Yolanda Hadid (1964), and Nigel de Jong (1984).

Among ASTRONOMERS In Netherlands

Among astronomers born in Netherlands, Kees de Jager ranks 15Before him are Walter Lewin (1936), Adriaan Blaauw (1914), Henri Joseph Anastase Perrotin (1845), Michael van Langren (1598), Maarten Schmidt (1929), and Dirk Brouwer (1902). After him are Hendrik van Gent (1900), Peter van de Kamp (1901), Bart Bok (1906), Adriaan van Maanen (1884), and Ewine van Dishoeck (1955).