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Astral Atlas
Wiki concept · Indian astrology

Chaturthamsa

Also called Caturthāṃśa · Chaturthamsha · Chaturthamsa chart · D4

The D4 Jyotish chart, derived from 4 portions of each zodiac sign under a declared rule.

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Word origin · etymology

Sanskrit compound: caturthāṃśa.

Caturtha means fourth and aṃśa a portion. The compound is recorded as a fourth part; D4 is the modern chart abbreviation.

Monier-Williams Sanskrit-English Dictionary: caturtha; caturthāṃśa (University of Hyderabad) ↗Monier-Williams Sanskrit-English Dictionary: aṃśa (University of Hyderabad) ↗

How we know · epistemology

Fourth-part mapping convention

The D4 result is derived from the selected reference longitude and a declared rule. Reproducing the same partition supports a calculation claim; it does not by itself support a prediction about a home or property.

Bṛhat Parāśara Horā Śāstra, chapter 6: divisional definitions ↗

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Terms used in this explanation

These links connect subjects and terminology. They do not establish a shared historical origin.

Sources & provenance

Use the citations beside each section to distinguish a calculation convention, a historical teaching and an editorial example.

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  1. Bṛhat Parāśara Horā Śāstra, Sanskrit chapter 6.2–4: sixteen names (printed p. 68) ↗
  2. Bṛhat Parāśara Horā Śāstra, chapter 6: divisional definitions ↗
  3. Monier-Williams Sanskrit-English Dictionary: caturtha; caturthāṃśa (University of Hyderabad) ↗
  4. Monier-Williams Sanskrit-English Dictionary: aṃśa (University of Hyderabad) ↗