---
type: Reference
bundle: jyotisha-kala
bundle_version: 0.12.0
id: aryabhatiya
title: Āryabhaṭīya
description: 'Āryabhaṭa’s compact system of 499 CE: the sine table, place-value arithmetic in verse, time reckoning (Kālakriyā), and the spherics (Gola) behind rising times and the ascendant.'
tags:
- reference
- aryabhata
- ganita
- astronomy
timestamp: '2026-07-09'
okf_version: '0.2'
license: CC BY-SA 4.0
---

# Āryabhaṭīya

Composed at Kusumapura in 499 CE, the Āryabhaṭīya compresses a complete astronomical system into 121 verses across four pādas: Gītikā (parameters), Gaṇita (mathematics, including the sine table and root extractions), Kālakriyā (time reckoning, epochs, hour-lords), and Gola (spherics, including the earth’s rotation, which Āryabhaṭa asserts). It is the fountainhead of the classical gaṇita lineage that runs through Brahmagupta to Bhāskara II. This bundle cites its Kālakriyā for the hour-lord generation of the weekday and its Gaṇita as the exemplar of computation in the tradition’s own taxonomy.
