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Astral Atlas

Lot (Arabic part)

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Also called Lots · Arabic part · Arabic parts

A point on the zodiac found by laying the distance between two bodies off from a third point, usually the Ascendant, which is Start + B − A on the circle of longitudes. Vettius Valens and Dorotheus of Sidon give formulas for Fortune, Spirit and a dozen others, often with the two bodies exchanged for a night birth, and the two authors differ in names, in formulas and in the night rule.

Word origin · etymology

English lot, from Old English hlot, an object used to decide someone’s share.

A Lot is the share or portion assigned to a topic. The label Arabic parts is a later Latin-medieval one for the same points, which Valens and Dorotheus already used, so it names the route by which they reached Latin readers and not who devised them. No Greek word is given here because none was checked in a primary text.[3][4]

How we know · epistemology

Ancient textual formulas with disagreeing authors

A Lot is arithmetic on three longitudes, so the position follows from the formula, the author and the rule for day and night; the formulas, the names and the night rules differ between authors, and for some of Dorotheus’s Lots the night case rests on the translator’s square brackets. What a Lot signifies is the tradition’s claim, not a measured property of a person or evidence of an outcome.[1][2]

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Sources & provenance

The numbers in the text point to this list; it distinguishes a calculation convention, a historical teaching and an editorial example.

Find these sources across the wiki →

  1. Vettius Valens, Anthologies, translated by Mark Riley: Book II chapters 18K;19P to 40 and Book III chapter 14K;11P (the Lots) ↗
  2. Dorotheus of Sidon, Carmen Astrologicum, translated by David Pingree: Books I and II (the Lots) ↗
  3. Online Etymology Dictionary, lot ↗
  4. Wikipedia: Arabic parts ↗