A History of the Kerala School of Hindu Astronomy (in Perspective) c10.s6.3

c10.s6.3

Parameśvara was a prolific writer, author of about 30 works, including original treatises and commentaries, both on astronomy and astrology. Among his original writings on astronomy might be mentioned the *Dṛggaṇita* (1430),¹ three works on spherics, being the *Goladīpikās* I-III (1443),² three works on improved computation and rationale of eclipses, viz., *Grahaṇāṣṭaka*,³ *Grahaṇamaṇḍana*⁴ and *Grahaṇanyāyadīpikā*,⁵ a text on the computation of the Moon-shadow, entitled *Candracchāyāgaṇita* and a rationale on the computation of mnemonic tables, *Vākyakaraṇa*.⁶ He has commented on the *Ārya-bhaṭīya*,⁷ *Mahābhāskarīya*,⁸ *Mahābhāskarīya-bhāṣya*,⁹ *Laghubhāskarīya*,¹⁰ *Suryasiddhānta*, *Laghumānasa*¹¹ *Līlāvatī*, *Goladīpikā* I¹² and *Vyatipātaṣṭaka*. Some of his commentaries, like, for instance, those on the *Āryabhaṭīya* and *Mahābhāskarīya-bhāṣya*, are extremely valuable for the historian of Hindu astronomy, since they contain the enunciation of some of his new findings, theories and interpretations. Two of his works on astronomy, viz., *Vākyadīpikā* and *Bhādīpikā*, are yet to be recovered. His writings on astrology include *Ācārasaṅgraha* in two versions, one of them ending with *Vivahānukulyam*, *Jātakapaddhati*, and *Ṣaḍvargaphalam* and commentaries on the *Jātakakarmapaddhati* of Śrīpati, *Praśnaṣaṭpañcāśikā* of Pṛthuyaśas, an anonymous *Muhūrtaṣṭaka* and the *Muhūrtaratna* of Govinda Bhaṭṭatiri.¹