The Surya Siddhanta, an influential Indian astronomical text, was translated into Japanese in the 8th century.

Kibi no Makibi was a Japanese astronomer who traveled to India in the 7th century to study astronomy and mathematics.

The zodiac, a system of dividing the ecliptic into twelve equal parts, was adopted by Japanese astronomers from Indian astronomy.

The Tenmonkan was an astronomical observatory built in Japan in the 8th century.

The armillary sphere, an instrument used to demonstrate the motions of celestial bodies, was introduced to Japan from India in the 7th century.

Abe no Seimei was a Japanese astronomer who wrote the astronomical treatise 'Tenmon Shuyo' in the 10th century.

The heliocentric model, which posits that the Earth revolves around the Sun, was rejected by Japanese astronomers in favor of the geocentric model.

The Tenpo calendar was a Japanese astronomical calendar that was based on Indian astronomy.

The precession of the equinoxes, the gradual shift of the position of the equinoxes, was modified by Japanese astronomers to account for the local conditions in Japan.

Kibi no Makibi was the Japanese astronomer who introduced the Indian astronomical concept of 'karan' to Japan.

The Aryabhatiya, another influential Indian astronomical text, was translated into Japanese in the 12th century.

The Jigenkan was an astronomical observatory built in Japan in the 13th century.

The precession of the equinoxes was further developed by Japanese astronomers, who made more accurate calculations of its rate.

Shibukawa Shunkai was a Japanese astronomer who wrote the astronomical treatise 'Tenmon Zukai' in the 17th century.

The zodiac was incorporated into Japanese astrology, where it was used to predict the fortunes of individuals.