Gan De

400 BC - 400 BC

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Gan De (Chinese: 甘德; fl. 4th century BC), also known as the Lord Gan (Gan Gong), was an ancient Chinese astronomer and astrologer born in the State of Qi. Along with Shi Shen, he is believed to be the first in history known by name to compile a star catalogue, preceded by the anonymous authors of the early Babylonian star catalogues and followed by the Greek Hipparchus who is the first known in the Western tradition of Hellenistic astronomy to have compiled a star catalogue. Read more on Wikipedia

Since 2007, the English Wikipedia page of Gan De has received more than 78,138 page views. His biography is available in 19 different languages on Wikipedia (up from 18 in 2019). Gan De is the 171st most popular astronomer (down from 147th in 2019), the 541st most popular biography from China (down from 467th in 2019) and the most popular Astronomer.

Memorability Metrics

  • 78k

    Page Views (PV)

  • 54.95

    Historical Popularity Index (HPI)

  • 19

    Languages Editions (L)

  • 6.77

    Effective Languages (L*)

  • 1.72

    Coefficient of Variation (CV)

Page views of Gan Des by language


Among astronomers, Gan De ranks 171 out of 531Before him are Margaret Burbidge, Maria Cunitz, Andrea M. Ghez, Michael H. Hart, Auguste Charlois, and Abu-Mahmud Khojandi. After him are Erasmus Reinhold, John Goodricke, Dominique, comte de Cassini, August Kopff, William Henry Pickering, and Jean Philippe Loys de Cheseaux.

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Among people born in 400 BC, Gan De ranks 47Before him are Aristyllus, King Xian of Zhou, Lais of Corinth, Polykleitos the Younger, Nausiphanes, and Aeacides of Epirus. After him are Erinna, Lucius Cornelius Scipio Barbatus, Leontion, Cleitarchus, Hecataeus of Abdera, and Anniceris. Among people deceased in 400 BC, Gan De ranks 20Before him are Oxyartes, Artakama, Cebes, Cephisodotus the Elder, Antalcidas, and Nausiphanes. After him are Erinna, Euphranor, Li Kui, Echion, Pythias, and Metrodorus of Chios.

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In China

Among people born in China, Gan De ranks 541 out of 1,392Before him are Emperor Xuanwu of Northern Wei (483), Shing-Tung Yau (1949), Yan Liben (600), 8th Dalai Lama (1758), Wang Bi (226), and Joan Chen (1961). After him are Li Yu (937), T. V. Soong (1894), Mei Lanfang (1894), Shen Zhou (1427), Lin Sen (1868), and Huang Xing (1874).


Among astronomers born in China, Gan De ranks 1After him are Fang Lizhi (1936) and John Dobson (1915).