Jyotiḥśāstra
A is a text from a classical body of literature on the topic of Hindu astrology, known as, dating to the medieval period of Classical Sanskrit literature. Only the most important ones exist in scholarly editions or translations, while many remain unedited in Sanskrit or vernacular manuscripts.
Such classical texts should be distinguished from modern works. There are a great number of contemporary publications, reflecting the persisting importance of astrology in Hindu culture, and the corresponding economical attractivity of the market in India. Notable modern authors include Sri Yukteswar Giri and Bangalore Venkata Raman.
Classification
David Pingree defines jyotihshastra as manuscripts on astronomy, mathematics, astrology and divination, and estimates that about 10% of surviving Sanskrit manuscripts belong to the category.Traditionally, jyotihshastra texts are classified into three broad categories:samhitā or śākhā : effects of planetary positions and other natural phenomenon on the worldhorā or jātaka : effects of planetary positions on humans,gaṇita : calculations of planetary paths and other astronomical matters such as spherics
- * siddhanta: a fundamental treatise; generally uses the beginning of creation of kalpa as the epoch of calculation
- * tantra: generally uses the beginning of the kali yuga as the epoch of calculation
- * karana: a handy, practical work describing short and simplified calculations; meant for panchanga-makers; generally uses the year of composition as the epoch