「無相干」（disjunct）與「異類」（alien）是用來稱呼黃道中彼此完全沒有上述任何親和關係的那些區段。這些區段既不屬於「主宰」或「服從」的類別，也不屬於「相互觀察」或「具有同等力量」的類別；此外，它們也完全不涉及前述四種相位——對衝、三分相、四分相與六合相——而彼此相隔一個或五個星座。其中，相隔一個星座的兩者，彷彿彼此背離；雖然它們各自都是兩個星座，但兩者共同界定了一個角的範圍。而相隔五個星座的兩者，則將整個圓周分割成不相等的部分；相較之下，其他各種相位則會將圓周等分。
“Disjunct” and “alien” are the names applied to those divisions of the zodiac which have none whatever of the aforesaid familiarities with one another. These are the ones which belong neither to the class of commanding or obeying, beholding or of equal power, and furthermore they are found to be entirely without share in the four aforesaid aspects, opposition, trine, quartile, and sextile, and are either one or five signs apart; for those which are one sign apart are as it were averted from one another and, though they are two, bound the angle of one, and those that are five signs apart divide the whole circle into unequal parts, while the other aspects make an equal division of the perimeter.