Ptolemy distinguished four major aspects between zodiac signs: sextile, square, trine, and opposition. He referred to the conjunction as 'corporally conjoined'. The following set of particular angular separations between two bodies: 000?° ... Conjunction 060?° ... Sextile 090?° ... Square 120?° ... Trine 180?° ... Opposition Note that Ptolemy did not make use of the Semisextile (30?°) and Quincunx (150?°) partile aspects.
Comments: Ptolemaic Aspect