Aryabhata II was a renowned mathematician and astronomer of ancient India. He is believed to have born around 920 AD. He is credited with having composed the Mahasiddhanta, a treatise on mathematical astronomy.
This text contains a comprehensive approach on topics such as longitudes of the planets, eclipses of the sun and moon, the projection of eclipses, the lunar crescent, the rising and setting of the planets and their alignments with other planets and stars.
Some of the calculations performed by Aryabhata II were however based on the methods formulated by Aryabhata I, his predecessor. His other notable works included the construction of a sine table correct up to five decimal places.