1) Impact crater on Mercury 
[crater] Futabatei is a crater on Mercury. It has a diameter of 66 kilometers. Its name was adopted by the International Astronomical Union in 1976. Futabatei is named for the Japanese novelist Futabatei Shimei, who lived from 1864 to 1909. ...
(Tatsunosuke Hasegawa), 1864–1909, Japanese author.