Aryabhata 499CE
Ellipse Equations
Mahavira 850CE
Uniform Mean planetary motion & instantaneous velocity
Bhaskara II 1150CE
Partial heliocentric model
Neelakanta 1501 CE
First unified model for inner & outer planets
Neelakantha
Neelakantha
"The earth is not encircled by the orbits of Mercury & Venus."
-Parameshvara 1410CE
Angular motion of planets
Jyestadeva 1530CE
"The motion of planets varies each second"
Sankara Varier~1530CE
nytimes.com/1990/01/23/sci…
(Reproduced in Documenta Indica XII 472-477)
-Just seven years later in 1588 Tycho Brahe published the EXACT same model of Neelakantha!
-There is a letter from Johann Schreck in 1618, of astronomical observations intended for the benefit of Kepler
“If I could only obtain soon the observations on the eclipse from India or from any other place…”
C. Baumgardt, Kepler: Life and Letters, Philosophical Library
Tycho, Jesuits & Kerala astronomers using the SAME planetary model. HOW can this be a coincidence? Connecting 3 simple dots is an endeavor of common sense, not doing so is the height of double standards.
"Calculated positions are found to deviate from the observed. The shastras declare the observed to be true. Hence the twice born adept at astronomy must strive to obtain positions by observation"
-Parameshvara
Drgganita 1.2-4
"The planets have been observed by me for fifty five years and they differ from positions derived from Parahita ganitam"
-Nilakantha quotes his teacher Paramesvara
-Paramesvara(Siddhantadipika)
-Neelakantha
Indian planetary model and its revision by Nilakantha: K Ramasubramaniam
Eclipse observatons of Paramesvara: K Chandrahari
Yuktibhasa of Jyestadeva: KV Sharma
History of Indian Mathematics:C. S. Seshadri
Transmission of Calculus: CKR
Mathematics in India: M. D. Srinivas