Synastry Aspect Categories and Influences

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How to group synastry aspects by category and influence. Read a summary of our approach here.

A typical synastry chart has around 60 aspects, it can be tedious to sort them out for analysis and weigh them properly. For that reason we are grouping aspects in our Relationship Horoscope according to their category (type of effect) and their influence on the relationship (strength counted as overall relevance and orb). This way you can get a quick overview of the prevailing influences in a relationship chart and move from there to a detailed examination. 

The purpose of this system is not to add a good/bad simplification to the synastry interpretation. Generally, it's hard to tell what configuration of categories is going to work out for you and we are not trying to tell you that. This feature merely adds analytical tools, to get a fast grip on the synastry. It's up to you to know if you like to fight with your partners, search for guidance or build peace and security or whatever else. You can see an analysis of the aspects by category and influence in the "Aspect Analysis" part of the Dominant Features tab of the Relationship Horoscope. Read below for some examples of how to use and understand aspect categories.

Most aspects are part of two categories but there are some that have multiple categories. In the first example let's have a look on the Saturn trine Ascendant aspect. In general this aspect shows that one partner (Saturn) is trying to add maturity to the behaviour and life way of the other (Ascendant). In our categorization this aspect has two categories: "Harmonic" and "Karmic".

The "Harmonic" category says that the overall effect of this aspect adds opportunities to get along in a relationship. That property is gained because of the trine aspect which shows that the Saturn person will promote criteria that are understandable to the Ascendant person. 

This aspect implies bonding based on teaching maturity which is really not a standard love affair. Such need to bond can emanate from a certain sense of duty to crystalize the partner, which for some can feel like if there would be some unpaid debts, therefore the "Karmic" category is very fitting here. 

So, while this aspect has harmonic potential its unusual side might not work out for everybody, especially if there will be an abundance of such aspects. In short if you don't look for a relationship that offers guidance and teaching don't be fooled by an abundance of "Harmonic" aspects if too much of them are also "Karmic".

A more complicated categorization is necessary for Venus square Mars. Here the Venus person balance is skewed by the Mars person and this can happen on many levels (from emotional, to material or physical). In our system this aspect is marked as "Disharmonic", "Traumatic" and as an aspect of "Attraction".

The "Disharmonic" category tells that this aspect adds dynamic to the relationship through mutual differences. Having enough dynamic in a relationship is important for some people, detrimental for others and causes enmity for everyone if present in large amounts. The "Traumatic" category shows potential for misunderstandings and conflict. These can appear in a situation where one tends to act against what the other feels as relaxing. However acting against an area from which the partner gets its pleasure can also be arousing or repulsive, therefore the "Attracting" aspect category. 

Therefore this aspect can add necessary dynamic or sparks to a relationship but can also be disturbing, depending on how many Disharmonic and Traumatic aspects there are, what counterbalance there is (in Harmonic, Friendly, Emotional or Key aspect categories) and how many the partners can handle.

The "Aspect Analysis" includes also an interpretation of the absence or abundance of certain type of aspect in a synastry. You can also use aspect filters to navigate through aspects by planet involved, aspect, orb, category or overall relevance.

See below the categories we use and their short explanation.

Aspect by Type

key Key Aspects – Show a direct, strong contact. There is intense feelings of sympathy or antipathy. Direct understanding, personal similarities or differences that create balance in a couple.


emo Emotional Aspects – Tell about emotional or spiritual contact, about love, hatred and strong emotions in general. Perceptiveness, tenderness or emotional and inner misunderstandings.


upl Uplifting Aspects – Give a punch of interest but can be destabilizing and break ties. Easy going feelings, a lot of freedom, no stereotype and routine or also no bounds at all.


fre Friendly Aspects – Are good for communication, many common topics, similar interests and opinions, often the same way of thinking.


bar Communication Barrier Aspects – Bring obstacles to communication, misunderstandings, differences in thinking and opinions and often few common topics.


att Attraction Aspects – Show passion, a spark, tensions, attraction from one or the other side. Sexual energy that can last for a moment or burn long.


kar Karmic Aspects – Indicate controversial connections, a bond despite tensions, hardship of letting go.


tra Traumatic Aspects – Indicate frustration, misunderstandings, conflicts, tensions that drain. These are hard to live with and tend to cause separation.


pos Harmonic Aspects – Show similarities, opportunities to share and compatible behavioral patterns. There is a sense of understanding, ability to adapt and support each other.


neg Disharmonic Aspects – Show challenges, obstacles and differences. There is tension, friction or even mutual exclusivity. For some this might add interest and necessary dynamics but for others it can be detrimental.


neu Neutral Aspects – Show a mixed potential, opportunities or challenges that will manifest depending on additional factors.


Aspects By Influence

Very Important influence is crucial and strongly felt. Together with Important influences they show the immediate interactions and the most likely terms of encounter and relations between the partners.

An Important influence forms the basic setup of a relationship, it is strongly felt and will be quick to manifest. These influences show where immediate sympathy or antipathy forms.

Relevant influence is part of the basic setup of the relationship, it is often felt on it's own and frequently manifests in shared situations but is seldomly capable to break or hold a relationship together on it's own.

Supplemental influence is part of the peripheral experiences of the couple, it manifests in some shared situations and is mostly part of a pool of possible aiding or conflicting potentials.

Marginal influence is part of the peripheral experiences of the couple, it manifests only if other similar influences are present and is mostly part of a pool of possible aiding or conflicting potentials.


Northnode conjunct southnode out of sign and partner B with those out of bound natal planets/ partner A with 2 natal Thors Hammer..EXPLOSIVE !!! The age gap with youngest having Saturn Saturn conjunct the elders ascendant...