Kerala’s contribution to Astronomy

In the last post we said that Angle AES is Sheegroccha, which is the longitude of the Sun. ( Sheegrocham Sarvesham Ravir Bhavathi ). The Angle AEK is the Heliocentric longitude of the planet.

Sidereal Periods of superior Planets in the Geocentric = Sidereal periods in the Heliocentric.

Sidereal Periods of Mercury and Venus = Mean Sun in the Geocentric

In the Planetary Model of Aryabhata, we find the equation

Heliocentric Longitude – Longitude of Sun = The Anomaly of Conjunction ( Sheegra Kendra ).

As Astronomy is Universal, we are indebted to these savants who made astro calculation possible. Even the word ” genius ” is an understatement of their brilliant IQ !

Development of the Planetary Models in Astronomy

Hipparchus 150 BCE

Claudious Ptolemy 150 ACE

Aryabhata 499 ACE

Varaha 550 ACE

Brahmagupta 628 ACE

Bhaskara I 630 ACE

Al Gorismi 850 ACE

Munjala 930 ACE

Bhaskara II 1150 ACE

Madhava 1380 ACE

Ibn al Shatir 1350 ACE

Paramesvara 1430 ACE

Nilakanta 1500 ACE

Copernicus 1543 ACE

Tycho Brahe 1587 ACE

Kepler 1609 ACE

Laplace 1700 ACE

Urbain Le Verrier 1850 ACE

Simon Newcomb 1900 ACE

E W Brown 1920 ACE

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