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 17,098 page views. His biography is available in 19 different languages on Wikipedia (up from 18 in 2019). Hiroki Kosai is the 481st most popular astronomer (up from 502nd in 2019), the 1,363rd most popular biography from Japan (up from 1,423rd in 2019) and the 6th most popular Japanese Astronomer.

Memorability Metrics

  • 17k

    Page Views (PV)

  • 53.63

    Historical Popularity Index (HPI)

  • 19

    Languages Editions (L)

  • 7.06

    Effective Languages (L*)

  • 1.79

    Coefficient of Variation (CV)

Among ASTRONOMERS

Among astronomers, Hiroki Kosai ranks 481 out of 644. Before him are Forest Ray Moulton, Heinrich Kreutz, Claes-Ingvar Lagerkvist, Audouin Dollfus, Carl A. Wirtanen, and Arno Arthur Wachmann. After him are Barnaba Oriani, William Henry Smyth, Karl Ludwig Littrow, Louise du Pierry, Lipót Schulhof, and Robert Julius Trumpler.

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Contemporaries

Among people born in 1933, Hiroki Kosai ranks 403. Before him are Michael Heseltine, Chris Lawrence, Horst Faas, Alexander Mitta, Ellen Winther, and John Gardner. After him are Sven-Olov Sjödelius, Abdon Pamich, Jean Carnahan, Tony Jay, Judah Folkman, and Stan Brakhage.

Others Born in 1933

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In Japan

Among people born in Japan, Hiroki Kosai ranks 1,363 out of 6,245. Before him are Shinji Ono (1979), Masahiro Sakurai (1970), Princess Tomohito of Mikasa (1955), Masaaki Suzuki (1954), William Phillips (null), and Kaz Hirai (1960). After him are Anri (1961), Hirofumi Nakasone (1945), Kozo Tashima (1957), Kenji Goto (1967), Princess Mako of Akishino (1991), and Masafumi Yokoyama (1956).

Others born in Japan

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Among ASTRONOMERS In Japan

Among astronomers born in Japan, Hiroki Kosai ranks 6. Before him are Takeshi Urata (1947), Kiyotsugu Hirayama (1874), Chushiro Hayashi (1920), Tsutomu Seki (1930), and Hiroshi Kaneda (1953). After him are Yuji Hyakutake (1950), Takao Kobayashi (1961), Hisashi Kimura (1870), Kaoru Ikeya (1943), Minoru Honda (1913), and Okuro Oikawa (1896).

Japanese born Astronomers

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