Ayanāṃśa

Ayanamsa (Sanskrit ayanāṃśa: ayana "movement" + aṃśa "component"), also ayanabhāga (Sk. bhāga "portion"), is the Sanskrit term for many systems used in Hindu astrology to account for the precession of equinoxes.[1] There are also systems of ayanamsa used in Western sidereal astrology, such as the Fagan/Bradley Ayanamsa.[2]

Path taken by the point of vernal equinox along the ecliptic over the past 6000 years.

Overview

There are various systems of Ayanamsa that are in use in Hindu astrology (also known as Vedic astrology) such as the Raman Ayanamsa[3] and the Krishnamurthy Ayanamsa[1], but the Lahiri Ayanamsa, named after its inventor, astronomer N.C. Lahiri, is by far the most prevalent system.[2][4] Critics of Lahiri Ayanamsa have proposed an ayanamsa called True Chitra Paksha Ayanamsa.[2][4]

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.[5]

References
  1. Barbara Pijan, https://barbarapijan.com/bpa/Amsha/Ayanamsha.htm
  2. "Ayanamshas in Sidereal Astrology". www.astro.com. Retrieved 2019-12-05.
  3. "Saravali: Ayanamsa". www.saravali.de. Retrieved 2019-12-05.
  4. Mihira, Varaha (2016-02-04). "Which Ayanamsa did Sri Varahamihira use?". Medium. Retrieved 2020-03-31.
  5. VS (2015-03-28). "Sidereal vs. Tropical". The Art of Vedic Astrology. Retrieved 2019-12-05.
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