What are the primary astronomical and shastric parameters of Vishakha Nakshatra (200° 00' to 213° 20') — 4 Padas, Deity, Navamsa D9 & Shastra Concordance?

Sanskrit Name: Viśākhā (Rādhā); Sidereal Arc: 200° 00' to 213° 20'; Rashi Span: 20° 00' Tula to 03° 20' Vrishchika; Vimshottari Lord: Guru (16 Years); Vedic Deity: Indragni (Dual Sovereign Force of Indra and Agni). Verified against NASA JPL DE441 ephemeris (Chitrapaksha Lahiri Ayanamsha) and the 18-treatise Sanskrit corpus.

01 · SIDEREAL LUNAR MANSION (NAKSHATRA 16 OF 28)

16. Vishakha (Viśākhā (Rādhā)) — 200° 00' to 213° 20'

Q: What is the canonical definition of Vishakha Nakshatra (200° 00' to 213° 20') — 4 Padas, Deity, Navamsa D9 & Shastra Concordance (NAKSH-01) in sidereal Jyotish?

Vishakha is governed in the Vimshottari Dasha cycle by Guru (16 Years) and presided over by the Vedic deity Indragni (Dual Sovereign Force of Indra and Agni). Its astronomical junction star (Yoga Tara) is identified with Alpha Librae (Zubenelgenubi) and Beta Librae (Zubeneschamali), and its inherent power is Vyapana Shakti (power to achieve and manifest many fruits over time).

In classical Sanskrit positional astronomy, Vishakha (Viśākhā (Rādhā)) is the 16-numbered lunar mansion spanning 20° 00' Tula to 03° 20' Vrishchika (200° 00' to 213° 20' of the sidereal ecliptic). Within the vectorized corpus (jyotish_corpus_core_v3), Vishakha is directly indexed across 219 verified passages and 84 numbered shlokas in 15 Sanskrit treatises.

Canonical Definition · Vishakha (200° 00' to 213° 20')

Vishakha is governed in the Vimshottari Dasha cycle by Guru (16 Years) and presided over by the Vedic deity Indragni (Dual Sovereign Force of Indra and Agni). Its astronomical junction star (Yoga Tara) is identified with Alpha Librae (Zubenelgenubi) and Beta Librae (Zubeneschamali), and its inherent power is Vyapana Shakti (power to achieve and manifest many fruits over time).

13° 20' SIDEREAL LUNAR MANSION & 4-PADA NAVAMSA (D9) PROJECTION Nakshatra 16 (Vishakha)

SIDEREAL ARC: 200° 00' to 213° 20' | RASHI: TULA AND VRISHCHIKA | DASHA LORD: GURU (16 YEARS) 0° Mesha 180° Chitra (Spica) 360° Revati 4 EQUAL NAVAMSA PADAS (3° 20' = 200 ARC-MINUTES EACH) Pada 1 · "Ti" Mesha (Aries D9) Lord: Mangala Pada 2 · "Tu" Vrishabha (Taurus D9) Lord: Shukra Pada 3 · "Te" Mithuna (The Twins D9) Lord: Budha Pada 4 · "To" Karka (Cancer D9) Lord: Chandra Deity: Indragni (Dual Sovereign Force of Indra and Agni) | Gana: Rakshasa (Celestial Fierce)

02 · FOUR PADAS & NAVAMSA (D9) HARMONIC MAPPING

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

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

According to Brihat Samhita Chapter 98 Verse 11 and Chapter 101 Verse 16 and Brihat Parashara Hora Shastra Chapter 46 Verses 72 to 75, Vishakha carries a mishra and sadharana (mixed sharp and soft) temperament and a rakshasa (celestial fierce) classification. Within the ecliptic structure of Vishakha, Padas 2 and 4 are Pushkara Navamsas; Pada 4 hosts Chandra Neecha (03°00' Vrishchika).

Pada & Degree Span	Navamsa (`D9`) Sign	`D9` Ruler & Syllable	Classical Pada Delineation
`Pada 1 (20°00' – 23°20' Tula)`	`Mesha (Aries D9)`	Mangala (`"Ti"`)	Executive Libra quarter projecting into Aries `D9`, driving Vishakha single-mindedly toward strategic goals.
`Pada 2 (23°20' – 26°40' Tula)`	`Vrishabha (Taurus D9)`	Shukra (`"Tu"`)	Pushkara Navamsa quarter consolidating Vishakha ambition into diplomatic endurance and material wealth.
`Pada 3 (26°40' – 30°00' Tula)`	`Mithuna (The Twins D9)`	Budha (`"Te"`)	Rhetorical and analytical quarter articulating Vishakha doctrinal convictions with persuasive clarity.
`Pada 4 (00°00' – 03°20' Vrishchika)`	`Karka (Cancer D9)`	Chandra (`"To"`)	Pushkara Navamsa in Scorpio transmuting emotional intensity into deep investigative mastery in Vishakha.

03 · MULTI-TREATISE SHASTRA CONCORDANCE

Citations for Vishakha Across 18 Classical Sanskrit Shastras

The concordance table below details how Vishakha 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 Vishakha, while Muhurta Chintamani and Kalaprakashika codify electional Panchanga rules for Vishakha.

Sanskrit Treatise	Verified Passages	Chapter Coverage	Analytical Scope
Muhurta Chintamani	`73 passages`	`8 ch / 17 v`	Records lunar transit rules, Tara Bala compatibility, and janma nakshatra results for Vishakha across 8 chapters.
Brihat Samhita	`48 passages`	`23 ch / 40 v`	Records lunar transit rules, Tara Bala compatibility, and janma nakshatra results for Vishakha across 23 chapters.
Kalaprakashika	`48 passages`	`16 ch / 5 v`	Records lunar transit rules, Tara Bala compatibility, and janma nakshatra results for Vishakha across 16 chapters.
Hora Ratnam	`13 passages`	`3 ch / 7 v`	Records lunar transit rules, Tara Bala compatibility, and janma nakshatra results for Vishakha across 3 chapters.
Prashna Marga	`12 passages`	`4 ch / 7 v`	Records lunar transit rules, Tara Bala compatibility, and janma nakshatra results for Vishakha across 4 chapters.
Jaimini Upadesha Sutras	`7 passages`	`0 ch / 2 v`	Records lunar transit rules, Tara Bala compatibility, and janma nakshatra results for Vishakha across 0 chapters.

04 · VERBATIM CORPUS FOLIO & VIMSHOTTARI SYNCHRONY

Archival Public-Domain Folio Excerpt for Vishakha

This archival passage for Vishakha comes from the public-domain edition of Saravali (Chapter 7, Verse 4) in jyotish_corpus_core_v3. When the natal Moon or Lagna occupies Vishakha, the remaining arc of Vishakha determines the opening balance of the Guru Mahadasha (16 Years).

CORPUS PROVENANCE: Saravali | Source ID: archive_KalyanaVarmasSaravali_201707 | Chapter 7, Verse 4
"4 A Savana month has 30 days and each month, viz Chaitra, Visakha , commences with the first day of Bright half and ends with the 30th Tithi (Amavasya) 5-6 Bhava Effects The good effects relating to a Bhava can be better reaped, if an enterprise relating to that Bhava is started"

In Ashtakoota synastry and daily Gochara transit analysis, Vishakha 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 (Rakshasa (Celestial Fierce)).

✦︎ SUTRA BLACK LABEL · INDIVIDUAL EPHEMERIS SYNTHESIS

Calculate Exact Vishakha Pada & Dasha Balances for Birth Coordinates

This encyclopedia entry documents the astronomical and shastric parameters of Vishakha (200° 00' to 213° 20'). To compute exact birth-second planetary placements in Vishakha, five-tier Vimshottari Dasha dates, and Navamsa (D9) dignities under DE441 Lahiri precession, visit jyotish.vip.

Vishakha 4-Pada Precision
DE441 Ephemeris (0.001°)
Guru Dasha Balance
Verbatim Shloka Citations

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Sanskrit Name	`Viśākhā (Rādhā)`
Sidereal Arc	`200° 00' to 213° 20'`
Rashi Span	20° 00' Tula to 03° 20' Vrishchika
Vimshottari Lord	Guru (16 Years)
Vedic Deity	`Indragni (Dual Sovereign Force of Indra and Agni)`
Yoga Tara Star	`Alpha Librae (Zubenelgenubi) and Beta Librae (Zubeneschamali)`
Traditional Symbol	`Triumphal Archway or Potter Wheel`
Gana & Temperament	`Rakshasa (Celestial Fierce) · Mishra and Sadharana (Mixed Sharp and Soft)`
Guna & Tattva	`Sattva · Agni (Fire)`
Corpus Passages	`219 (84 v)`
Observatory	jyotish.vip