Elliptical orbits & accurate Heliocentric periods
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

Correct Equation of center & calculation of eccentric orbits
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

A comparison of sidereal periods obtained by Aryabhata and Neelakantha with modern values- A relentless thousand year effort without any fabrication or historical inconsistency.

Kepler discerned the elegant law, but it is now known that he didn't make the observations of orbital periods crucial for his theorems. He did not acknowledge sources-Arab or Kerala manuscripts the Jesuits brought for him. He was, ultimately, a

-In 1581 Matteo Ricci wrote to Jesuit Petri Maffei requiring assistance of an “intelligent Brahmin” to understand local time keeping(jyotisa)

(Reproduced in Documenta Indica XII 472-477)

-Just seven years later in 1588 Tycho Brahe published the EXACT same model of Neelakantha!