UmbrielAstrology

The Influence of Position with regard to the Sun

What a planet does when it rises before the Sun, or after it.

Ptolemy, about 150 AD, in J. M. Ashmand's English of 1822. A 1-minute read · pages 23 to 24 · free, every word

[p. 23] The respective powers of the Moon and of the three superior planets are either augmented or diminished by their several positions with regard to the Sun.

The Moon, during her increase, from her first emerging to her first quarter, produces chiefly moisture: on continuing her increase from her first quarter to her full state of illumination, she causes heat; from her full state to her third quarter she causes dryness; and from her third quarter to her occultation she causes cold.

The planets, when matutine, and from their first emerging until they arrive at their first station, are chiefly productive of moisture; from their first station until they rise at night, of heat; from their rising at night until their second station, of dryness; and from their second station until their occultation, they produce cold*.

[p. 24] But it is also sufficiently plain that they must likewise cause, by their intermixture with each other, many varieties of quality in the Ambient: because, although their individual and peculiar influence may for the most part prevail, it will still be more or less varied by the power of the other heavenly bodies configurated with them.

The notes

* Although all the positions mentioned in this paragraph are not applicable to Venus and Mercury, which can never rise at night, that is to say, at sunset, and although the author in the beginning of the chapter speaks only of the Moon and the three superior planets, there yet seems no reason why the orbits of Venus and Mercury should not be similarly divided by their inferior and superior conjunctions, and their greatest elongations.

The following is from Whalley: “The first station, in this chapter mentioned, is when a planet begins to be retrograde; and the second station when, from retrogradation, a planet becomes direct. They” (the planets) “begin to rise at night when in opposition to the Sun.” (Ashmand’s note, 1822)

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The text is J. M. Ashmand's 1822 translation, checked word by word between two scans of the 1822 printing (Wellcome Library and Harvard). Pages are cited as the 1822 printing numbers them. The portrait is William Marshall’s engraving of Lilly from the front of the 1659 printing (Wellcome Library, public domain).

Updated 30 October 2026. Method: Umbriel's own astronomy engine computes every position stated on this site; how closely it matches NASA JPL Horizons is published on the accuracy page.