Aspects

The measurement of various angles and degrees between planets in a birth chart that form easy or difficult relationships known as major or minor aspects. For example, two or more planets placed 120 degrees apart form a major aspect known as a trine which is regarded as beneficial. Other major aspects are the:

conjunction (0-8 degrees apart)
semi-sextile (30 degrees)
sextile (60 degrees)
square (90 degrees)
quincunx (150 degrees)
opposition (180 degrees)

Minor aspects are not deemed to be so important in their influence and involve less obvious degree connections. The most commonly used of these are the: