Varahamihira's work Panchasiddhantika deals with ___ astronomical systems. 

The correct answer is Five.

Key Points

• Varahamihira's work Panchasiddhantika discusses five astronomical systems.
• The term Panchasiddhantika translates to "The Five Astronomical Systems."
• This work synthesizes knowledge from earlier astronomical texts and systems.
• Varahamihira was a prominent Indian astronomer and mathematician of the 6th century CE.
• The five systems included are the Surya Siddhanta, Romaka Siddhanta, Paulisha Siddhanta, Garga Siddhanta, and Vashishta Siddhanta.

Additional Information

• Varahamihira: An influential figure in ancient Indian astronomy, he was part of the 'Navaratnas' (Nine Gems) in the court of King Vikramaditya.
• Panchasiddhantika: This treatise compiled and commented on five key astronomical works, providing insights into their methodologies and findings.
• Astronomical Systems: Each system presents unique approaches to celestial calculations, including planetary motions, eclipses, and calendars.
• Surya Siddhanta: One of the most important texts, it forms the basis for many calculations in Indian astronomy and discusses the Earth's circumference and the solar system.
• Significance of the Work: Panchasiddhantika is significant for its contribution to the evolution of Indian astronomical knowledge and its influence on later scholars.