Shin Hirayama - Wikipedia

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Shin Hirayama (平山信, Hirayama Shin, 1868–1945) was the first Japanese astronomer to discover an asteroid. In 1900 he discovered 498 Tokio and 727 Nipponia.

The crater Hirayama on the Moon is jointly named after him and Kiyotsugu Hirayama.

Reference: The Monthly Newsletter of Royal Astronomical Society, 1947, Vol 107, pages 44-46 Obituary Shin Hirayama http://articles.adsabs.harvard.edu/full/seri/MNRAS/0107//0000044.000.html