Although Sun in Capricorn’s rules may be occasionally frustrating for Moon in Aquarius, these two share a desire for independence that makes them compatible. Moon in Aquarius’ need for detachment blends nicely with Capricorn’s practical approach to relationships, although Capricorn will probably take on the parental role.
Sun in Capricorn’s purpose is to create a successful life for himself and his partner. This involves the implementation of his rules, authority, discipline and ambition. When it comes to commitment, you can’t beat Sun in Capricorn; he honors his promises. If his partner finds him to be distant and work-obsessed, it’s because his control extends to his personal life. He’s a self-sufficient sign, and expects the same from his partner. A lover who understands that he values strength over emotional displays will have the key to his heart.
Moon in Aquarius needs space to be herself. At a core level, she is an outsider. She doesn’t play by the rules, although if her Sun is in a tradition-loving sign, this may not be immediately obvious. Regardless of her Sun sign, Moon in Aquarius is not completely happy unless her lover recognizes that she stands slightly to the left of the relationship (and life in general). She can love and commit and follow a domestic routine as long as she has room to pursue her own interests. Note that “follow a domestic routine” means that she does things her way. This Moon sign is stubbornly insistent on following her own rules, which do not resemble anyone else’s rules.
Sun in Capricorn will take on the role of parental authority in this relationship, and Moon in Aquarius won’t care … until he tries to tell her that she must do X in a certain way. There will likely be some area where Aquarius insists on having her own way, no matter what. Here is where they will clash, although Capricorn may eventually capitulate in the face of Aquarius’ fixed resolve. But in general, Capricorn will admire her independence, and Aquarius will be comfortable with his restrained approach.