Hiroki Kosai Explained

Hiroki Kosai
Native Name:香西 洋樹
Native Name Lang:ja
Birth Date:2 August 1933
Nationality:Japanese
Fields:Astronomy
Workplaces:Tokyo Astronomical Observatory
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Known For:Helping to popularize astronomy in Japan
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Minor planets discovered: 93 
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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. He is credited by the Minor Planet Center (MPC) with the discovery of nearly 100 asteroids.

Awards and honors

Asteroid 3370 Kohsai, discovered by Karl Reinmuth at Heidelberg Observatory in 1930, is named in his honor. The official naming citation was published by the MPC on 14 April 1987 .

List of discovered minor planets

Hiroki Kosai discovered several asteroids, all in collaboration with Kiichirō Furukawa and Goro Sasaki:

2271 Kiso 22 October 1976  
2330 Ontake 18 February 1977  
2470 Agematsu 22 October 1976  
2924 Mitake-mura 18 February 1977  
2960 Ohtaki 18 February 1977  
3111 Misuzu 19 February 1977  
3249 Musashino 18 February 1977  
3291 Dunlap 14 November 1982  
3319 Kibi 12 March 1977  
3320 Namba 14 November 1982  
3391 Sinon 18 February 1977  
3392 Setouchi 17 December 1979  
3607 Naniwa 18 February 1977  
3878 Jyoumon 14 November 1982  
4072 Yayoi 30 October 1981  
4077 Asuka 13 December 1982  
4186 Tamashima 18 February 1977  
4272 Entsuji 12 March 1977  
4526 Konko 22 May 1982  
4812 Hakuhou 18 February 1977  
4855 Tenpyou 14 November 1982  
4890 Shikanosima 14 November 1982  
4929 Yamatai 13 December 1982  
4963 Kanroku 18 February 1977  
5017 Tenchi 18 February 1977  
5018 Tenmu 19 February 1977  
5082 Nihonsyoki 18 February 1977  
5454 Kojiki 12 March 1977  
5466 Makibi 30 November 1986  
5541 Seimei 22 October 1976  
6031 Ryokan 26 January 1982  
6218 Mizushima 12 March 1977  
6818 Sessyu 11 March 1983  
6846 Kansazan 22 October 1976  
7104 Manyousyu 18 February 1977  
7105 Yousyozan 18 February 1977  
7562 Kagiroino-Oka 30 November 1986  
7627 Wakenokiyomaro 18 February 1977  
7634 Shizutani-Kou 14 November 1982  
7991 Kaguyahime 30 October 1981  
8133 Takanochoei 18 February 1977  
8144 Hiragagennai 14 November 1982  
9147 Kourakuen 18 February 1977  
9153 Chikurinji 30 October 1981  
9293 Kamogata 13 December 1982  
9719 Yakage 18 February 1977  
10006 Sessai 22 October 1976  
10008 Raisanyo 18 February 1977  
10009 Hirosetanso 12 March 1977  
10453 Banzan 18 February 1977  
11254 Konkohekisui 18 February 1977  
11255 Fujiiekio 18 February 1977  
11442 Seijin-Sanso 22 October 1976  
11827 Wasyuzan 14 November 1982  
12186 Mitukurigen 12 March 1977  
12221 Ogatakoan 14 November 1982  
12682 Kawada 14 November 1982  
14313 Dodaira 22 October 1976  
14314 Tokigawa 18 February 1977  
14315 Ogawamachi 12 March 1977  
14316 Higashichichibu 12 March 1977  
14338 Shibakoukan 14 November 1982  
14795 Syoyou 12 March 1977  
14820 Aizuyaichi 14 November 1982  
14821 Motaeno 14 November 1982  
15202 Yamada-Houkoku 12 March 1977  
15671 Suzannedébarbat 12 March 1977  
15672 Sato-Norio 12 March 1977  
16357 Risanpei 22 October 1976  
18289 Yokoyamakoichi 22 October 1976  
18290 Sumiyoshi 18 February 1977  
18291 Wani 18 February 1977  
18322 Korokan 14 November 1982  
19083 Mizuki 18 February 1977  
12 March 1977  
19953 Takeo 14 November 1982  
19954 Shigeyoshi 14 November 1982  
20962 Michizane 12 March 1977  
22277 Hirado 14 November 1982  
24640 Omiwa 13 December 1982  
26794 Yukioniimi 18 February 1977  
26806 Kushiike 22 May 1982  
14 November 1982  
34995 Dainihonshi 18 February 1977  
34996 Mitokoumon 18 February 1977  
12 March 1977  
14 November 1982  
14 November 1982  
52260 Ureshino 22 May 1982  
52261 Izumishikibu 14 November 1982  
12 March 1977  
12 March 1977  
30 November 1986  
Co-discovery made with:
K. Furukawa
G. Sasaki

External links