Complete answer: Siddhanta Shiromani, was written by Bhaskaracharya II, who is known as one of the “greatest mathematicians of medieval India.” While he wrote many books, but is mostly remembered for this 1150 A.D. masterpiece, Siddhanta Shiromani (Crown of Treatises).

PransMarg -The Way of Questions in Astrology (Set of 2 Vol) प्रश्‍नमार्ग (संस्कृत एवम् हिन्दी अनुवाद)