Gan De

400 BC - 400 BC

Photo of Gan De

Icon of person Gan De

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 100,092 page views. His biography is available in 19 different languages on Wikipedia. Gan De is the 175th most popular astronomer (down from 173rd in 2019), the 552nd most popular biography from China (down from 540th in 2019) and the most popular Chinese Astronomer.

Memorability Metrics

  • 100k

    Page Views (PV)

  • 56.38

    Historical Popularity Index (HPI)

  • 19

    Languages Editions (L)

  • 7.39

    Effective Languages (L*)

  • 1.59

    Coefficient of Variation (CV)

Page views of Gan Des by language

Over the past year Gan De has had the most page views in the with 14,041 views, followed by Chinese (5,839), and Japanese (2,148). In terms of yearly growth of page views the top 3 wikpedia editions are Catalan (138.57%), Tajik (58.90%), and Serbo-Croatian (41.84%)


Among astronomers, Gan De ranks 175 out of 644Before him are Hubert Reeves, Michael H. Hart, J. Allen Hynek, Jean Philippe Loys de Cheseaux, Otto Wilhelm von Struve, and Tobias Mayer. After him are Peter van de Kamp, Oskar Backlund, Maria Cunitz, Margaret Burbidge, Jacobus Kapteyn, and Lyudmila Chernykh.

Most Popular Astronomers in Wikipedia

Go to all Rankings


Among people born in 400 BC, Gan De ranks 48Before him are Cynane, Silanion, Aeacides of Epirus, Aristyllus, King Xian of Zhou, and Erinna. After him are Polykleitos the Younger, Crantor, Gnaeus Flavius, Metrocles, Antimachus, and Lucius Cornelius Scipio Barbatus. Among people deceased in 400 BC, Gan De ranks 21Before him are Nausiphanes, Artakama, Perictione, Cebes, Erinna, and Pythias. After him are Antalcidas, Metrodorus of Chios, Philip of Opus, Li Kui, Gaius Licinius Stolo, and Aeneas Tacticus.

Others Born in 400 BC

Go to all Rankings

Others Deceased in 400 BC

Go to all Rankings

In China

Among people born in China, Gan De ranks 552 out of 1,610Before him are Ruan Ji (210), Watchman Nee (1903), Li Yu (937), Jia Chong (217), Zhang Zai (1020), and Wu Yi (1938). After him are Gongsun Du (200), Deng Yingchao (1904), 8th Dalai Lama (1758), Ragibagh Khan (1320), Edward Yang (1947), and Yin Lihua (5).


Among astronomers born in China, Gan De ranks 1After him are Fang Lizhi (1936), Jing Fang (-78), Frank Shu (1943), and John Dobson (1915).