Every astrologer has some guidelines that they use in order to analyze a relationship. Depending on the type of relationship that is to be studied, the focus and the emphases will be completely different. For example, analyzing a romantic relationship will bring up other questions and aspects compared to the relationship between two friends, or that between child and parent, and so on.
In this article, the focus will be on romantic relationships. The Sun-Moon interaspect is one of the first things to take into consideration upon starting the study of a relationship. Here, we are concerned with whether the Sun in the first person’s chart forms a major aspect with the Moon of the second person or not. Another aspect to look for is the Sun/Moon midpoint in both partners’ charts – the question here is whether the first person’s Sun/Moon midpoint conjuncts exactly with a planet in the second person’s chart or not. The role played by the Sun and the Moon is extremely important, and it has been used for a very long time by all astrologers. It’s almost like a rule of thumb that everyone applies due to the power it has to accurately reveal significant things about a certain relationship.
To illustrate the importance of the Moon, let’s take as example the situation where the two partners spend a lot of time together or when they have already moved in together. In this case, the Moon plays a major role in synastry. The aspects created between the Moon in the first person’s natal chart and the planets in the second person’s chart – and the other way around – are to be thoroughly studied, because if the astrologer notices any challenged interaspcts that involve the Moon or the composite Moon, then the relationship is clearly going to be a difficult one and the partners will probably have to go over quite a few hurdles in order to make things work.
Also referring to the Moon, its Nodes have great significance in synastry. If the Nodal ties are strong, then the two partners are drawn to one another. Studied in the birth chart, the Nodal axis represents important lessons an individual has to learn during their life. When one partner’s Nodal axis intersects with the planets or points in the other person’s chart, the attraction between the two of them is really strong. If the Nodes – the North ones in particular – are strongly contacted by the points and planets of another person, then feelings of uneasiness and hesitation may arise. No matter how strong the attraction may be (and we aren’t necessarily talking about sexual attraction, which may occur in platonic friendships/relationships, too), a certain amount of fear can be experienced, especially by the Node person.
You may wonder why the Nodal contacts are important in synastry. Well, in the case of an individual's planet conjunct another’s North Node, this pulls them forward, toward lessons without which they couldn’t possibly grow spiritually and be happy. As for a person's planet conjunct another’s South Node, here they will experience a backward pull, toward familiar experiences and things. Relationships that develop under the conjunct with the South Node tend to feel a bit too “easy,” determining one of the partner’s – the one who is pulled backward - to eventually feel that they need something more, something that can make them feel as if they’re “outgrowing” their current relationship or even their partner.
By reading the birth charts, an astrologer can tell what the partners think of each other. This information can be easily obtained by overlaying one partner’s planets – the Sun, Moon, Mars, and Venus – onto the chart of the other and followed by the identification of the houses in which the first partner’s planets fall into.
Apart from the Sun and the Moon, Saturn also plays an important role in synastry and in the composite chart. When it comes to synastry, Saturn is representative of the ties that bind the two partners in a relationship. These ties may not always be good for the couple, just binding. In the case of long-term relationships that involve a lot of meaningful, sincere feelings, one can almost always observe the presence of powerful Saturn interaspects. However, the relationship shouldn’t be too Saturn-laden.
The other planets – Uranus, Pluto, and Neptune – are generally considered as being revealers of signifying karmic connections. For example, if one partner’s outer planets form strong aspects to the planets and points of the other partner, then the former is the one who influences the relationship more, in terms of how it will eventually play out, whether for good or for bad.
These are just a few tips based on the astrological study of two persons’ natal charts. As you could see in this article, the birth charts can offer a great amount of information that one can use in order to change their lives for the better, to steer things in the direction that they want them to go - in this case, their relationships.