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The Surya Siddhanta (IAST: Sūrya Siddhānta; lit. ' Sun Treatise ' ) is a Sanskrit treatise in Indian astronomy dated to 4th to 5th century, [ 1 ] [ 2 ] in fourteen chapters. [ 3 ] [ 4 ] [ 5 ] The Surya Siddhanta describes rules to calculate the motions of various planets and the moon relative to various constellations , diameters of various ...
Earth's diameter and/or circumference in yojanas as mentioned by classical Hindu astronomers [note 1] Diameter Circumference Aryabhata (476–550 CE) 1,050 yojana Surya Siddhānta: Varahamihira (6th century CE) 3,200 yojana Bhāskara I (c. 600 – c. 680 CE) 1,050 or 1600 yojana Brahmagupta (c. 598 – c. 668 CE) 1,581 yojana 5,000 yojana
For example, the surviving version of the Surya Siddhanta can be dated to 1000 CE, although its original version may have been composed around 400 CE. [10] Similarly, the Paitamaha Siddhanta referred to by Varāhamihira was probably composed in the early 5th century (distinct from an even earlier work of the same name [ 11 ] ), but the present ...
Literal meaning of jyā Technical meaning of jyā and kojyā. An arc of a circle is like a bow and so is called a dhanu or chāpa which in Sanskrit means "a bow". The straight line joining the two extremities of an arc of a circle is like the string of a bow and this line is a chord of the circle.
Translation of the Surya Siddhanta – a text-book of Hindu astronomy (PDF). University of Calcutta. Ketkar, Venkatesh Bapuji (1923). "Indian and Foreign Chronology". Journal of the Asiatic Society of Bombay (75, Part 1). British Indian Press. Mercier, Raymond (2018). Astronomical Computations for the History of Indian Astronomy.
The dominant of the three was the trepidation described by the most respected Indian astronomical treatise, the Surya Siddhanta (3:9–12), composed c. 400 but revised during the next few centuries. It used a sidereal epoch, or ayanamsa , that is still used by all Indian calendars , varying over the ecliptic longitude of 19°11′ to 23°51 ...
In addition, the Bhagavata Purana and other Puranas speak of a multiplicity of universes, or Brahmandas, each covered by seven-fold layers with an aggregate thickness of over ten million times its diameter (5x10 15 yojanas ≈ 6,804+ light-years in diameter). The Jyotisha Shastras, Surya Siddhanta, and Siddhānta Shiromani give the Brahmanda an ...
The Arya-siddhanta, a lost work on astronomical computations, is known through the writings of Aryabhata's contemporary, Varahamihira, and later mathematicians and commentators, including Brahmagupta and Bhaskara I. This work appears to be based on the older Surya Siddhanta and uses the midnight-day reckoning, as opposed to sunrise in ...