Western astrology methods

Terms and Bounds

Terms and Bounds explains unequal degree ranges and their table-dependent rulers. 17° Aries lies in Mercury’s 14°–21° bound under that table.

Term
Terms and Bounds

Editorially reviewed: · Reviewed by OpenFate · Editorial Methodology

Overview

Terms or bounds divide each sign into unequal degree ranges ruled by traditional planets, with Egyptian, Ptolemaic, and other tables producing different rulers. The page separates calculation from interpretation and keeps this worked result conditional: 17° Aries lies in Mercury’s 14°–21° bound under that table. Verification follows this declared method: For a planet at 27° Capricorn, specify the table, use full-precision longitude at the boundary, and return the range start, end, and ruler.

At a glance

Topic
Terms and Bounds
Method family
Terms and Bounds · traditional and specialist methods
Case inputs
17°♈; Egyptian bounds selected; Aries intervals read in degree order
Measured finding
17° Aries lies in Mercury’s 14°–21° bound under that table
School frame
Terms and Bounds · traditional procedural method
OpenFate tools
Terms and Bounds · knowledge reference only

Definition and exact scope

terms or bounds divide each sign into unequal degree ranges ruled by traditional planets, with Egyptian, Ptolemaic, and other tables producing different rulers

Calculation or decision rule

for a planet at 27° Capricorn, specify the table, use full-precision longitude at the boundary, and return the range start, end, and ruler

Worked case and illustrative near miss

17°♈; Egyptian bounds selected; Aries intervals read in degree order. 17° Aries lies in Mercury’s 14°–21° bound under that table.

Illustrative near miss: Using a Ptolemaic bound result while labeling the receipt Egyptian, or treating each bound as an equal 6° slice.

School and variant boundary

Tables and procedures differ by author, era, translation, and sect; the selected authority must remain visible.

Product, safety, and verification boundary

OpenFate presents Terms and Bounds as a sourced knowledge method and does not claim a dedicated calculator or generated reading for it. Verification retains failed measurements and uncertainty, then revises interpretation rather than the receipt. Terms and Bounds cannot diagnose a person, remove consent, or guarantee an event.

Sources and editorial basis

  1. NCGR-PAA Level II Curriculum
    PDF pp. 4–5, lines 104–119, “Classical Astrology — Beyond the Basics”.A professional curriculum naming sign classifications, five levels of rulership, reception, dispositors, sect, minor aspects, declination, antiscia, fixed stars, lots, and time-lord systems.
  2. William Lilly: Christian Astrology, Books I and II
    Book I, pp. 101–104 and dignity tables pp. 104–105; terms/bounds as degree-level rulership.A public scan of a seventeenth-century primary text used to verify Lilly-era terminology, tables, and worked rules without presenting that historical system as universal.
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