Tenchi: The Samurai Astronomer_
A chronicle of the life of Yasui Santetsu, a 17th century master of go who turned his attention to astronomy and created a new calendar for Japan. Based on the life of Santetsu Yasui (December 27, 1639-November 1, 1715), appointed as the first official astronomer in the Edo Period and would go on to create the Jokyo calendar at the imperial request.
Starring
Aoi Miyazaki, Junichi Okada, Kiichi Nakai
Updated Feb 16, 2026
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Year context
Tenchi: The Samurai Astronomer was released 14 years ago in 2012.
Overview
A chronicle of the life of Yasui Santetsu, a 17th century master of go who turned his attention to astronomy and created a new calendar for Japan. Based on t...
Tenchi: The Samurai Astronomer is a Drama, History film with a runtime of 2h 21m.
CAST (6)
DETAILS
FREQUENTLY ASKED QUESTIONS
What is Tenchi: The Samurai Astronomer about?
A chronicle of the life of Yasui Santetsu, a 17th century master of go who turned his attention to astronomy and created a new calendar for Japan. Based on the life of Santetsu Yasui (December 27, 1639-November 1, 1715), appointed as the first official astronomer in the Edo Period and would go on to create the Jokyo calendar at the imperial request.
How long is Tenchi: The Samurai Astronomer?
Tenchi: The Samurai Astronomer has a runtime of 141 minutes (2h 21m).
Who stars in Tenchi: The Samurai Astronomer?
The cast of Tenchi: The Samurai Astronomer includes Aoi Miyazaki, Junichi Okada, Kiichi Nakai, Ryuta Sato, Takashi Sasano.
What is the rating of Tenchi: The Samurai Astronomer?
Tenchi: The Samurai Astronomer has a rating of 7.3 out of 10 based on 7 votes on TMDB.
GENRES (2)
Drama
History