Sesquiquadrate (135°) Inversion of a Semi-square, and deemed equally unfortunate but less
powerful.
Quincunx (150°). The inversion of a Semi-Sextile. Ptolemy called it inconjunct, practically
rejecting it as an aspect of appreciable force. Modern statistics appear to indicate, however,
that it has unrealized possibilities. It is presumed to be mildly favorable, but as it operates
through inharmonious signs the resulting influence must be somewhat contradictory.
Opposition (180°). Proper interpretation must give consideration to the psychological
stimulus resulting from whatever planetary influences are then in operation, from a sign and
through a house.
Biquintile (144°). Classed as a harmonizing influence.
Quintile (72°). A mildly benefic aspect, but ineffectual when directed to malefic.
Semi-Quintile or Decile (36°). Kepler deemed it a good influence, but mild.
Semi-Decile (18°). Harmonious, but weak.
Inconjunct, Dissociate. These are terms sometimes applied to the Semisextile and the
Quincunx aspects, as indicative that no relationship can exist between adjacent signs and
houses, or between those which are one sign or house less than an opposition.
The aspects were anciently classified as benefic and malefic:
The benefic aspects were the Trine and Sextile. The conjunction is generally classed as a
benefic aspect. In them the relationship is harmonious, between congenial signs, even though
the influences related are often inharmonious -- because of the intrinsic nature of the rays so
combined. They are deemed conducive of harmony, in that cosmic energy is released without
obstruction.
The malefic aspects were the square and semisquare. The opposition is generally classed as
malefic, even though it combines signs that are moderately congenial. These are generally
deemed conducive of friction, in that two opposing forces challenge the individual's capacity