From: Thomas Hockey et al. (eds.). The Biographical Encyclopedia of Astronomers, Springer Reference. New York: Springer, 2007, p. 870

Courtesy of

Parameśvara of aśśeri [Parmeśvara I]

Narahari Achar

BornĀlattūr, (Kerala, India), circa 1360

Diedcirca 1455

Parameśvara, one of the foremost astronomers of Kerala, hailed from the village of Ālattūr (Aśvatthagrāma in Sanskrit), and his house, Vāaśśeri, was situated on the confluence of the river Nīla with the Arabian Sea. He was a gvedin, of the Aśvalāyana Sūtra, and belonged to the Bhgugotra. He was a pupil of Rudra I. He carried out astronomical observations near his house for some 45 years. He also observed a large number of eclipses between 1393 and 1432, which are recorded in his work Siddhāntadīpikā. Nothing else is known about the life of Parameśvara.

Parameśvara was a prolific writer and authored some 30 works. These include original treatises and commentaries on other works of astronomy and astrology. Among his original works on astronomy might be mentioned the following: Dggaita (1430); a work on spherics, Goladīpikā (1443); and three works on the computation and rationale of eclipses, Grahaāṣṭaka, Grahaamaṇḍana, and Grahaanyāyadīpikā. He also commented on a large number of astronomical works including the Āryabhaīya, Sūryasiddhānta, Laghumānasa, and Līlāvatī. Many of his works are yet to be published.

Selected References

Parameśvara (1916). Goladīpikā, edited by Ganapati Sāstrī. Trivandrum Sanskrit Series, no. 49. Trivandrum.

(1957). Goladīpikā, edited by K. V. Sarma. Adyar Library Pamphlet Series, no. 32, Adyar, India: Adyar Library and Research Centre.

(1963). Drgganita, edited by K. V. Sarma. Hoshiarpur: Vishveshvarananda Institute.

Pingree, David Census of the Exact Sciences in Sanskrit. Series A. Vol. 4 (1981): 187b192b; Vol. 5 (1994): 211b212a. Philadelphia: American Philosophical Society.

Sarma, K. V. (1972). A History of the Kerala School of Hindu Astronomy. Hoshiarpur: Vishveshvarananda Institute.