The Moon trine the Moon
the transiting Moon's monthly passage in trine to its own natal place, or one person's Moon trine another's in synastry
What the tradition reads
A natal chart cannot show the Moon trine itself, since a single body cannot stand at an angle from its own degree; the tradition reads this key through transit, at another point in the same monthly cycle that carries the Moon back into a trine with its own birth place. Wikipedia's account of astrological transits notes that the transiting Moon is felt mainly through mood and feeling, coloured by the sign and house it is passing through, and Ptolemy names the trine, together with the sextile, harmonious, so this pass of the cycle reads as another easy stretch within that same ordinary emotional weather. Between two charts, one person's Moon trine another's is read, together with the sextile, as the two people sharing very similar tastes and emotional sensibilities: sources describe partners who feel quite comfortable with each other, find building a harmonious home together easier since their preferred styles already match, and who give real, shared attention to family matters as a couple.
The story
A trine is a hundred and twenty degrees, a third of the circle; Ptolemy's chapter on the mutual configuration of the signs calls it, together with the sextile, harmonious, since the signs it joins are of the same kind, all masculine or all feminine. Selene meets herself in the fifty daughters Pausanias credits her with bearing to the sleeping Endymion, a number some readers connect to the fifty lunar months of an Olympiad, her own monthly cycle carried out into offspring. The same goddess who yokes her team nightly to drive her chariot across the sky is, by this account, already defined by exact and repeated return. A trine between the Moon and itself, met in transit or in synastry, is that same return arriving with no resistance at all.
Written from
- Ptolemy, Tetrabiblos, Book I, Chapter XVI (Ashmand translation, Project Gutenberg ebook 70850, https://www.gutenberg.org/files/70850/70850-h/70850-h.htm)
- Wikipedia, Aspect (astrology)
- Wikipedia, Transit (astrology)
- Wikipedia, Selene
- Cafe Astrology, Synastry: Moon-Moon Aspects
Corpus key aspect:Moon:Moon:trine.