Parameshvara's Drigganita system
Sistema Drigganita de Parameshvara
- Date
- 1431 · confidence high
- Place
- Vatasseri (Alathiyur), Malappuram, Kerala, India
- Credited to
- Parameshvara
- People
- 👤 Paramésuara1370–1460
- Field
- Cosmos & Earth
What was discovered
Revision of planetary parameters based on about 55 years of observation of eclipses and conjunctions, because the traditional values no longer matched the sky. It is an early example of systematic correction of a model using data.
What it led to
- observational astronomy of the Kerala school
- corrected tables used in Kerala for centuries