New games! PlayTrivia andBirthle.

ASTRONOMER

Hiroki Kosai

1933 - Today

Photo of Hiroki Kosai

Icon of person Hiroki Kosai

Hiroki Kosai (香西 洋樹, Kōsai Hiroki, born 8 February 1933) is a Japanese astronomer with the Kiso Observatory. He is best known for helping to popularize astronomy in Japan and for his observations of comets and asteroids, most notably with his co-discovery the comet 1976 XVI. Read more on Wikipedia

Since 2007, the English Wikipedia page of Hiroki Kosai has received more than 15,244 page views. His biography is available in 18 different languages on Wikipedia. Hiroki Kosai is the 502nd most popular astronomer (down from 453rd in 2019), the 1,426th most popular biography from Japan (down from 1,180th in 2019) and the 7th most popular Japanese Astronomer.

Memorability Metrics

  • 15k

    Page Views (PV)

  • 42.31

    Historical Popularity Index (HPI)

  • 18

    Languages Editions (L)

  • 4.65

    Effective Languages (L*)

  • 2.34

    Coefficient of Variation (CV)

Page views of Hiroki Kosais by language


Among ASTRONOMERS

Among astronomers, Hiroki Kosai ranks 502 out of 531. Before him are David L. Rabinowitz, Roy A. Tucker, Hisashi Kimura, Marc Aaronson, Helen Sawyer Hogg, and Robert H. McNaught. After him are Seiji Ueda, Kiichirō Furukawa, Luciano Tesi, Adriaan van Maanen, David C. Jewitt, and Okuro Oikawa.

Most Popular Astronomers in Wikipedia

Go to all Rankings
Load previousLoad previous

Contemporaries

Among people born in 1933, Hiroki Kosai ranks 424. Before him are Valéria Gyenge, John Hopfield, Lou Albano, Maurice Moucheraud, Constand Viljoen, and Aleksandr Privalov. After him are Luka Lipošinović, Boris Razinsky, Raúl Sánchez, Mark Jones, Tom Price, and Konstantin Loktev.

Others Born in 1933

Go to all Rankings
Load previousLoad previous

In Japan

Among people born in Japan, Hiroki Kosai ranks 1,426 out of 6,048. Before him are Haruki Uemura (1951), Sayaka Kanda (1986), Seiko Hashimoto (1964), Jun Fukuyama (1978), Takashi Shimizu (1972), and Nikka Costa (1972). After him are Aiko, Princess Toshi (2001), Tamotsu Suzuki (1947), Hisashi Kaneko (1959), Masami Ihara (1967), Hideki Maeda (1954), and Rica Matsumoto (1968).

Others born in Japan

Go to all Rankings
Load previousLoad previous

Among ASTRONOMERS In Japan

Among astronomers born in Japan, Hiroki Kosai ranks 7. Before him are Kiyotsugu Hirayama (1874), Tsutomu Seki (1930), Chushiro Hayashi (1920), Takeshi Urata (1947), Yuji Hyakutake (1950), and Hisashi Kimura (1870). After him are Seiji Ueda (1952), Kiichirō Furukawa (1929), Okuro Oikawa (1896), Hiroshi Kaneda (1953), Takao Kobayashi (1961), and Kenzo Suzuki (1950).

Japanese born Astronomers

Go to all Rankings
Load previousLoad previous
  • DatawheelCL