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Victory be to the Lord Shri Krishna Chaitanya

Shri Siddhanta Shiromani

Grahaganitaadhyaya

By

Shri BhaskaracharyaAnd the Vaasanaa commentary on that

Along with Bengali translations by

Shri Bimala Prasada Siddhanta SaraswatiAnd edited by him

For the students of Saraswat Chatushpathi

Published in the Jyotirvida Magaine

In the year 4271after the birth of Lord Chaitanya

!"hat is #$ !%&' ( %)* + #$ !,!-

7/24/2019 Introduction Siromani

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Introduction

#fter days of sincere and dedicated efforts. the

Grahaganitaadhyaya/Cos0ology1 part of the Siddhanta Shiromaniis being published in this Jyotirvida Magaine with its original

Sans2rit. Vaasanaa co00entary and its translation in 3engali4

#lready the Golaadhyaya of this boo2 with its original Sans2rit.

Vaasanaa Co00entary and translations in 3engali has been

published in the VrihaspatiMagaine4 "he original Shri Siddhnata

Shiromani wor2 by Bhaskaracharya has four parts4 Lilavati or

#rith0etic and #lgebra. although not for0ing part of cos0ology. are

i0portant basic readings as introductions to cos0ology4Considering the special ability of Shri Bhaskaracharya in

0athe0atics and also his ability to clearly and si0ply present even

the co0ple5 of co0ple5 theories in 0athe0atics 0a2es hi0 the

undisputed leader a0ongst the astrono0ers4 "he Siddhanta

Shiromani of Shri Bhaskara can be said to be an elaborate

co00entary on Shri Surya Siddhanta. #lthough in certain places the

figures of Shri Bhaskaradiffer with Shri Surya Siddhanta. inspite of

this these two boo2s are considered as the stalwarts of ancient 6indu

astrono0y4

7e are ac8uainted with two types of astrono0y.

Mathe0atical #strono0y and #pplied #strono0y4 Mathe0atical

#strono0y has four sub9categories : Siddhanta, antra, !arana

and Saarinii4 "he branch of 0athe0atical astrono0y based on

observation of planets and stars and 0athe0atical aspect of the0 is

called Siddhanta4 "he branch of 0athe0atical astrono0y dealing

with the hypotheses on Siddhanta and its elaborate e5planation is

called antra4 "he branch of 0athe0atical astrono0y based onusable 0athe0atics which is used to deter0ine the results of

Siddhanta is called !arana4 "he tables of calculations 0ade using

the!aranate5ts for Calenders etc are called Saarinii4 ;5a0ples of

Siddhnataare the Shri Surya Siddhantaand eighteen si0ilar te5ts