Article ID: CBB947416867

The Equation of the Conjunction (Śīghraphala) of the Planets in Classical Indian Astronomy (2023)

unapi

In classical Indian Astronomy the true positions of the five planets are determined by repeatedly applying two equations, viz the equation of centre (mandaphala) and the equation of conjunction (śīghraphala). In the present paper we concentrate on the equation of conjunction (śīghraphala). Here, conjunction refers to the conjunction of a planet with the Sun, considering the 'anomaly’ of their mean positions. In this process the concepts involved are the śīghra anomaly (śīghrakendra), śīghraparidhi (periphery) and the śīghrakarņa (hypotenuse).

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Authors & Contributors
Rupa, K.
Venugopal, Padmaja
Balachandra Rao, S.
Abhyankar, K. D.
Brummelen, Glen Van
Brunier, Serge
Journals
Journal of Astronomical History and Heritage
Indian Journal of History of Science
Journal for the History of Astronomy
Aleph: Historical Studies in Science and Judaism
Archive for History of Exact Sciences
Centaurus: International Magazine of the History of Mathematics, Science, and Technology
Publishers
Cambridge University Press
Gradiva
Navakarnataka Publications
Princeton University Press
Springer
University of Texas Press
Concepts
Astronomy
Eclipses; transits; occultations; conjunctions
Solar system; planets
Celestial mechanics
Venus
Cosmology
People
Kepler, Johannes
al-Kāshī, Jamshīd Ibn Maḥmūd Ghyāth al-Dīn
Aryabhata I
Lomonosov, Mikhail Vasilevich
Ptolemy
Rømer, Ole Christensen
Time Periods
Ancient
17th century
Medieval
18th century
19th century
20th century, late
Places
India
China
Mexico
Germany
Russia
Romania
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