Kiyotsugu Hirayama

Japanese astronomer

Kiyotsugu Hirayama (October 13, 1874 - April 8, 1943), ancestral home Miyagi Sendai City , Yes Japan Of astronomer 。 Due to many discoveries asteroid The track of asteroid family Is famous for its ideas.^{[1 ]}

Chinese name: Kiyotsugu Hirayama
Foreign name: ひらやまきよつぐ
Nationality: Japan

date of birth: October 13, 1874
Date of death: April 8, 1943
Occupation: astronomer
Ancestral home: Sendai City, Miyagi County

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In order to praise his achievements asteroid Is called Pingshan nationality ； There is also a crater on the moon called Hirayama Crater to commemorate him and Shin Hirayama, (1999) Pingshan asteroid He was also named to show respect.

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1896: Imperial University of Tokyo Graduated from Science College with star discipline.
1906: Served as a teaching assistant at the University of Tokyo.
1911: Doctor of Science academic degree.
1915: U.S.A Yale University Overseas Study.
1919: Professor at the University of Tokyo.
1921: Technician at the Tokyo Observatory (i.e. the National Astronomical Observatory of Japan).
1935: Retired at retirement age.

Students of Pingshan Qingci Hagihara Xiongyou 、 Hideo Hirose They are all famous astronomers.

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'Rock Wave Lecture Physics and Chemistry · Celestial Mechanics'（ Yanbo Bookstore 1929)
'Yanbo Lecture on Physics and Chemistry, Chronology and Calendar' (Yanbo Bookstore 1929)
'General Astronomy'（ Co existence Society Selected Books on Physics (1931)
'The method of calendar and time'（ Star Society 1933)
'Little Doubt Star' (Yanbo Book Store, Yanbo Complete Works, 1935)
'General Astronomy'（ Co publishing 1940)
'Frost Column • Calendar Words'（ Xinnong Education Association (1947)

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