is a former professor of electronics at Tamagawa University, and a Japanese science fiction author.
He graduated Waseda University with a degree in electronics.
He made his science fiction debut in 1965. During the 1970s and 1980s he has been an active hard SF advocate. In the first half of the 1980s, he coined the term "KÃ
Âseiki Sekai" (Ã¥Â
Âä¸Âç´Âä¸ÂçÂÂ, Light Century Universe), defined as the sphere with a diameter of 100 light years (within 50 light years radius from the Sun). He also edited KÃ
Âseiki SeihyÃ
 (Ã¥Â
Âä¸Âç´ÂæÂÂ表, Light Century Catalogue), the star catalogue of Light Century Universe (738 stars had been known at the time, include the Sun). Also he is known for bibliographies of Japanese science fiction.
He received the Seiun Award best non-fiction book in 1985 for KÃ
Âseiki no Sekai, and Nihon SF Taisho Award special award in 1991 for his bibliography works.
Works
Fiction
- Planet series
- Haiuei wakusei (ãÂÂã¤ã¦ã§ã¤æÂÂæÂ Highway Planet) (1967)
- Sutorarudoburugu wakusei (ã¹ãÂÂã©ã«ãÂÂãÂÂã«ã°æÂÂæÂ Straldburg Planet) (1975)
- BurakkuhÃ
Âru wakusei (ãÂÂã©ãÂÂã¯ãÂÂã¼ã«æÂÂæÂ Blackhole Planet) (1979)
- Taimumashin wakusei (ã¿ã¤ã ãÂÂã·ã³æÂÂæÂ Time Machine Planet) (1981)
- Antena wakusei (ã¢ã³ãÂÂãÂÂæÂÂæÂ Antenna Planet) (1982)
- GazÃ
 bunmei (çÂȌÂÂæÂÂæÂ Pictorial Civilization) (1968)
- Ikiteiru umi (çÂÂãÂÂã¦ãÂÂãÂÂæµ· Living Sea) (1970)
- KonpyÃ
«tàga shinda hi (ã³ã³ãÂÂãÂ¥ã¿ãÂÂæÂȋÂÂã æÂÂ¥ The Day Computers Died) (1972)
- Randau no genshiseiâÂÂKÃ
Âseiki patorÃ
Âru (ã©ã³ãÂÂã¦ã®幻è¦ÂæÂÂâÂÂÃ¥Â
Âä¸Âç´ÂãÂÂãÂÂãÂÂã¼ã«ãÂȋ·ãªã¼ãº) (1981)
- UchÃ
«sen OromorufugÃ
 no bÃ
Âken (å®Âå®Âè¹ãªãÂÂã¢ã«ãÂÂå·ã®åÂÂéº The Voyage of the Spaceship Holomorph) (1982)
Non-fiction
- KÃ
Âseiki no Sekai (Ã¥Â
Âä¸Âç´Âã®ä¸Âç Light Century World) (1984; revised 1985)
- Ginga ryokÃ
 to tokushu soutaisei riron (éÂÂæ²³æÂÂ
è¡Âã¨ç¹æ®Âç¸対æÂ§çÂÂè« Galactic Travel and the Special Theory of Relativity) (1984)
- Ginga ryokÃ
 to ippan soutaisei riron (éÂÂæ²³æÂÂ
è¡Âã¨ä¸Â荸対æÂ§çÂÂè« Galactic Travel and the General Theory of Relativity) (1986)
- KidÃ
 erebÃÂtà(è»ÂéÂÂã¨ã‹ÂÂã¼ã¿ Orbital Elevator) (co-written with RyÃ
«ichi Kaneko) (ShÃ
ÂkabÃ
Â, 1997; revised, Hayakawa ShobÃ
Â, 2009)
Bibliographic works
Index to SF Magazine
- S-F magajin indekkusu 1âÂÂ100 (ãÂÂS-FãÂÂ㋸ã³ãÂÂã¤ã³ãÂÂãÂÂã¯ã¹ (1âÂÂ100) Index to "S-F Magazine" 1âÂÂ100) (1967; supplemented 1968; revised 1980)
- S-F magajin indekkusu 101âÂÂ170 (ãÂÂS-FãÂÂ㋸ã³ãÂÂã¤ã³ãÂÂãÂÂã¯ã¹ (101âÂÂ170)) (1973)
- S-F magajin indekkusu 101âÂÂ200 (ãÂÂS-FãÂÂ㋸ã³ãÂÂã¤ã³ãÂÂãÂÂã¯ã¹ (101âÂÂ200)) (1981)
- S-F magajin indekkusu 201âÂÂ300 fikushon hen (ãÂÂS-FãÂÂ㋸ã³ãÂÂã¤ã³ãÂÂãÂÂã¯ã¹ 201âÂÂ300 ãÂÂã£ã¯ã·ã§ã³ç¯Â) (1985)
SF Grand Annotated Catalogue
- S-F tosho kaisetsu sÃ
Âmokuroku shÃ
Âwa 20nen 9gatsu - shÃ
Âwa 43nen 8gatsu (S-Få³æÂ¸è§£èª¬ç·Âç®é²ãÂÂæÂÂÃ¥ÂÂ20å¹´9æÂÂã¼æÂÂÃ¥ÂÂ43å¹´8æÂ SF Grand Annotated Catalogue September 1945 - August 1968) (1969; revised 1970)
- Zoku S-F tosho kaisetsu sÃ
Âmokuroku shÃ
Âwa 43nen 9gatsu â shÃ
Âwa 46nen 3gatsu (S-Få³æÂ¸è§£èª¬ç·Âç®é²ãÂÂæÂÂÃ¥ÂÂ43å¹´9æÂÂâÂÂ46å¹´3æÂÂ) (1971)
- S-F tosho kaisetsu sÃ
Âmokuroku (1946-1970) zÃ
Âho kaiteiban jÃ
 (S-Få³æÂ¸è§£èª¬ç·Âç®é²(1946-1970)å¢Âè£ÂæÂ¹å®ÂçÂÂãÂÂä¸Â) (1982)
- S-F tosho kaisetsu sÃ
Âmokuroku (1971-1980) jÃ
 (S-Få³æÂ¸è§£èª¬ç·Âç®é² 1971-1980 ä¸Â) (1989)
- S-F tosho kaisetsu sÃ
Âmokuroku (1971-1980) ge (S-Få³æÂ¸è§£èª¬ç·Âç®é² 1971-1980 ä¸Â) (1991)
- S-F tosho kaisetsu sÃ
Âmokuroku (1946-1970) zÃ
Âho kaiteiban ge (S-Få³æÂ¸è§£èª¬ç·Âç®é²(1946-1970)å¢Âè£ÂæÂ¹å®Âç ä¸Â) (1996)
Notes
References
External links