Translation
Surya Siddhantaसूर्यसिद्धान्त
By Anonymous (multiple recensions, conventionally pre-500 CE). Translated by Ebenezer Burgess, 1860. Public domain.
An early Sanskrit treatise on astronomical computation — planetary positions, eclipses, time-cycles, geographical coordinates. Burgess's 1860 translation, originally published in the Journal of the American Oriental Society, remains the most accessible English version. The mathematical and astronomical content makes this an unusually concrete window into pre-modern Indian science.
Chapters
Chapter 1
Chapter 1: Mean Motions of the Planets
Chapter 2
Chapter 2: True Places of the Planets
Chapter 3
Chapter 3: Direction, Place, and Time
Chapter 4
Chapter 4: Eclipses of the Sun
Chapter 5
Chapter 5: Eclipses of the Moon
Chapter 6
Chapter 6: Projection of Eclipses
Chapter 7
Chapter 7: Planetary Conjunctions
Chapter 8
Chapter 8: Conjunctions of the Planets with Stars
Chapter 9
Chapter 9: Heliacal Risings and Settings
Chapter 10
Chapter 10: Phases of the Moon
Chapter 11
Chapter 11: Cosmography
Chapter 12
Chapter 12: Geography (the Sphere)
Chapter 13
Chapter 13: Astronomical Instruments
Chapter 14
Chapter 14: Astronomical Topics