The sextile and inconjunct are often regarded as the “border” aspects bridging major and minor ones. While most astrologers classify the sextile (60°) as a major aspect, a significant subset considers the quincunx aspect (150°) to be major, and only a very small minority views the semi-sextile (30°) as major. Together with these three “border” aspects, all major aspects are collectively referred to as the “Ptolemaic aspects.”
Inconjunct
![](https://synnisigns.com/wp-content/uploads/2024/03/aspect-inconjunct_XnConvert_700-1.png)
The quincunx (or inconjunct, abbreviated as Inc) represents an angle of 150°, which is five-twelfths of the 360° ecliptic. Typically, a separation of 150±2° is considered a quincunx. This aspect is believed to exert a moderate but somewhat unpredictable influence, often bringing strain. It signifies difficulty and stress arising from the forced integration of incompatible elements. The quincunx may indicate areas of self-neglect in a person’s life, particularly concerning health, or the imposition of obligations. While this aspect is sometimes referred to as the inconjunct, technically, such usage is incorrect.
Semi-Square
![](https://synnisigns.com/wp-content/uploads/2024/03/aspect-semisquare_XnConvert_700-1.png)
The semi-square (abbreviated as SSq) represents an angle of 45°, equivalent to half of a square (90°). Typically, a separation of 45±2° is deemed a semisquare. This aspect is regarded as a milder form of the square and suggests somewhat challenging circumstances. It is also occasionally referred to as the octile or semiquartile.
Sesquiquadrate
![](https://synnisigns.com/wp-content/uploads/2024/03/aspect-sesquare_XnConvert_700-1.png)
The sesquiquadrate (abbreviated as Ses) represents an angle of 135°, which is the combination of a square (90°) and a semisquare (45°). Typically, a separation of 135±2° is regarded as a sesquiquadrate, indicating somewhat stressful conditions. It is considered to have a similar influence to the semisquare. The sesquiquadrate is also known as a sesquisquare, square-and-a-half, quartile-and-a-half, and/or trioctile.
Semi-Sextile
![](https://synnisigns.com/wp-content/uploads/2024/03/aspect-semisextile_XnConvert_700-1.png)
The semi-sextile (abbreviated as SSx) denotes an angle of 30°, equivalent to half of a sextile (60°). Typically, a separation of 30±2° is regarded as a semisextile. This aspect suggests a mild strain associated with decision-making and highlights an area of life where a conscious effort to maintain positivity is necessary. Alternate names for this aspect include confinis and inconjunct.
Quintile
![](https://synnisigns.com/wp-content/uploads/2024/03/aspect-quintile_XnConvert_700-1.png)
The quintile (abbreviated as QNt or Qui) represents an angle of 72°, which corresponds to the angle of a regular pentagon. Typically, a separation of 72±2° is deemed a quintile. This aspect is somewhat akin to a semisextile, suggesting moderately beneficial influences, yet it does not require effort to yield its benefits. The quintile indicates talent and vaguely fortunate circumstances.
Bi-Quintile
![](https://synnisigns.com/wp-content/uploads/2024/03/aspect-biquintile-3-100-1.png)
The biquintile (abbreviated as BQt or BQn) denotes an angle of 144°, which is twice the angle of a quintile (72°). Typically, a separation of 144±2° is regarded as a biquintile. This aspect is deemed similar to a quintile in its influence.