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The Table Text ūṣaṇa of Haridatta

| Posted in: India history

Journal name: History of Science in South Asia
Original article title:
The journal “History of Science in South Asia� (HSSA) publishes high-quality research on the history of science, focusing on South Asia but also welcoming studies on broader cultural influences. It adopts a broad definition of “science� and encourages theoretical discussions and offers open access. Although initially supported by the Sayahna Foundation, it is now aided by the University of Alberta and Érudit.

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Author(s):

Keshav Melnad
Indian Institute of Technology Gandhinagar
Clemency Montelle
University of Canterbury
Ramasubramanian K.
Indian Institute of Technology Bombay


History of Science in South Asia:

(Individual submissions go through peer-review)

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Year: 2024 | Doi: 10.18732/hssa102

Copyright (license): Creative Commons Attribution-ShareAlike 4.0 International License.


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Summary of article contents:

In the seventeenth century, the astronomer Haridatta of Mewar, Ჹٳ, produced a table text named the ūṣaṇa (epoch Ś첹 1560, or 1638 CE). This table text provided calendar makers with a complete set of data and associated procedures for the computation of the annual calendar known in Sanskrit as a 貹ñṅg. The tables are huge and represent an enormous computational effort, and the astronomical structure that underlies them is somewhat akin to the Babylonian Goal Year texts and similar cyclic schemes set out by Ptolemy and al-Zarqālī. The accompanying text consists of around one hundred and thirty verses organised into five chapters. This article is the first in a series that presents the Sanskrit text of the ūṣaṇa along with a translation and a detailed technical commentary of the text and analysis of the associated tabular material, chapter by chapter. In the opening chapter, Haridatta begins the work with a lengthy encomium to his patron, Mewar Rajput Jagatsiṃha, before describing the procedures by which the true longitudes and motions of the sun and the moon can be determined using the accompanying tabulated data.

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