20. Purva Ashadha (Pūrva Āṣāḍhā (Āpya)) — 253° 20' to 266° 40'

In classical Sanskrit positional astronomy, Purva Ashadha (Pūrva Āṣāḍhā (Āpya)) is the 20-numbered lunar mansion spanning 13° 20' to 26° 40' Dhanu (Sagittarius) (253° 20' to 266° 40' of the sidereal ecliptic). Within the vectorized corpus (jyotish_corpus_core_v3), Purva Ashadha is directly indexed across 43 verified passages and 30 numbered shlokas in 8 Sanskrit treatises.

The Four 3° 20' Padas of Purva Ashadha & Ninth-Harmonic Dispositors

The lunar mansion Purva Ashadha divides into four equal quarters (Padas) of 3° 20' (200 arc-minutes each) that project directly into the Navamsa (D9) harmonic chart. In Purva Ashadha, this four-fold partition links the sidereal longitude in Dhanu to four consecutive Navamsa signs and phonetic seed syllables (Aksharas).

According to Brihat Samhita Chapter 98 Verse 12 and Chapter 101 Verse 20 and Brihat Parashara Hora Shastra Chapter 46 Verses 88 to 91, Purva Ashadha carries a ugra and krura (fierce invincibility) temperament and a manushya (human) classification. Within the ecliptic structure of Purva Ashadha, Pada 3 (20°00'–23°20' Dhanu) is a Pushkara Navamsa in Tula (D9).

Citations for Purva Ashadha Across 18 Classical Sanskrit Shastras

The concordance table below details how Purva Ashadha is distributed across the eighteen classical treatises of jyotish_corpus_core_v3. Varahamihira in Brihat Samhita and Brihat Jataka defines the stellar coordinates, seasonal transits, and natal Moon traits of Purva Ashadha, while Muhurta Chintamani and Kalaprakashika codify electional Panchanga rules for Purva Ashadha.

Archival Public-Domain Folio Excerpt for Purva Ashadha

This archival passage for Purva Ashadha comes from the public-domain edition of Brihat Parashara Hora Shastra (Chapter 46, Verse 59) in jyotish_corpus_core_v3. When the natal Moon or Lagna occupies Purva Ashadha, the remaining arc of Purva Ashadha determines the opening balance of the Shukra Mahadasha (20 Years).

CORPUS PROVENANCE: Brihat Parashara Hora Shastra | Source ID: archive_brihat-parashara-hora-sastra | Chapter 46, Verse 59
"orate the three following Nakshatras, Punarvasu, Pushya and Aslesha in the Savya and Magha, Purvaphalguni and Uttaraphalguni in the Apsavya Then incorporate the three following, Hast, Chitra and Swati in the Savya and Vishakah, Anuradha and Jyeshtha in the Apsavya Then incorporate Mul, Purvashadha and Uttarashadha in the Savya and Shravan, Dhanishtha"

In Ashtakoota synastry and daily Gochara transit analysis, Purva Ashadha is the reference anchor for computing the nine-fold Tara Bala cycle (Janma, Sampat, Vipat, Kshema, Pratyak, Sadhana, Naidhana, Mitra, and Parama Mitra) and checking Nadi and Gana compatibility (Manushya (Human)).