There are numerous minor aspects used by astrologers. A Semi-square (45 degrees), a Sesquiquadrate (135 degrees) and an Inconjunction (150 degrees) are considered to have some stress associated with them.
Dividing a circle by five creates a 72-degree aspect called a Quintile. This is considered to be a subtle, but highly creative, aspect. A Septile divides the circle by seven (51 3/7 degrees) and is thought to have karmic implications in a chart.