Ayanāṃśa

Ayanamsa  (Sanskrit :  "movement"  +  "component"), also ayanabhāga (Sk. bhāga "portion"), is the Sanskrit term for many systems used in Hindu astrology to account for the precession of equinoxes. There are also systems of ayanamsa used in Western sidereal astrology, such as the Fagan/Bradley Ayanamsa.

Overview
There are various systems of Ayanamsa that are in use in Hindu astrology (also known as Vedic astrology) such as the Raman Ayanamsa and the Krishnamurthy Ayanamsa, but the Lahiri Ayanamsa, named after its inventor, astronomer Nirmala Chandra Lahiri, is by far the most prevalent system.  Critics of Lahiri Ayanamsa have proposed an ayanamsa called True Chitra Paksha Ayanamsa. 

Ayanamsa is believed to have been quantified in Vedic texts at least 2,500 years before the Greek astronomer Hipparchus did so in 190 B.C.

References

External links

 Ayanamsa definitions at Best Knowns

Category:Technical factors of Hindu astrology