Astrological Compatibility: What Is Synastry and How Does it Work?

The astrology of connections is called synastry. It assesses two people’s astrological compatibility, whether they are acquaintances, business associates, or romantic partners. Certain individuals think that synastry, along with astrology in general, is more predetermined and can accurately predict whether two individuals would get along or not.

Some people think that synastry is more useful for pointing out potential conflict points and regions where a relationship might be easy to navigate. According to the latter group, synastry is a psychological technique that people can use to resolve conflicts, improve interpersonal relationships, and understand relationship dynamics.

Novice astrologers look at potential dates’ compatibility based solely on the sun sign. But there’s a full chart to think about, with all the planets in our solar system as well as other significant astrological aspects. The art of comparing two complete natal charts is called synastry.

The Most Important Planets in Synastry

While the entire chart is significant when attempting to evaluate compatibility through synastry, many astrologers feel that, depending on the type of connection, some planets will have a greater impact on the potential compatibility of the union.

The Most Important Planets in Love and Life Partnership Synastry

For this kind of synastry, the Sun, Moon, Rising, and Venus signs are the most significant positions. Observing the planets of the other person that aspect any of those four is also very significant.

When someone else’s Neptune squares your Sun, for instance, it could indicate that your spouse is attracted to you only on the basis of their own perception of you rather than the full picture of who you are.

In synastry, why are the signs of the Sun, Moon, Rising, and Venus the most significant? In astrology, the first three names on this list are referred to as the “big three.”

The Sun stands for your general character, your motivations, and the places you “shine.”

The Moon is a symbol for your subconscious, inner realm of emotions, and things that give you a sense of emotional security.

Your Rising Sign is symbolic of the “mask” you display to the outside world and how others see you.

Venus is the other significant addition to the “big three” in synastry. This planet is a representation of your love, your desire for love, and your preferred style of relationship behavior. It also symbolizes your sexuality and pleasure experiences.

The Most Important Planets in Business Partnership Synastry

The Sun, Moon, and Rising signs are also highly significant when it comes to business relationships. Nonetheless, Venus’ significance is emphasized in relation to love. While any planet can have an impact on business, Mars and Saturn are particularly useful indicators of potential collaboration.

Mars is a symbol for what we do in the world. It may have to do with sex, but it also has to do with your motivation and work ethic. Saturn is a symbol for our ambition and production. It’s simple to understand why these two planets would be very significant in a commercial relationship.

Don’t Forget the Other Planets!

While comparing two people’s natal astrology charts may primarily focus on the four planets and luminaries, astrologers take into account all of the planets when doing a synastry reading.

The Most Important Houses in Synastry

The twelve houses in astrology stand for several aspects of your life, including your residence, relationships, and employment. In synastry, the placement of another person’s planets within your houses might reveal important details about your compatibility.

The Most Important Houses in Love and Life Partnership Synastry

The most significant signs for romance and relationship are the 5th and 7th. Romance is just one of the numerous topics covered by the Fifth House. Although some placements here, such as another person’s Venus in your 5th House, may indicate a strong and enduring bond, this house may be particularly significant during the courtship stage of a relationship.

The 7th House is both the house of marriage and one-on-one relationships. The planets of another person in your 7th House point to a smooth transition, a strong pull, and ease of communication.

The Most Important Houses in Business Partnership Synastry

In any kind of collaboration, especially business ties, the 7th House is crucial. But you need also consider the 2nd House of belongings, values, and finances, as well as the 10th House of career and public image, while examining these kinds of partnerships.

Don’t Forget the Other Houses!

While the aforementioned houses are particularly significant for partnerships, synastry readings are influenced by the entire natal chart, which includes every house and planet.

How Are Synastry Readings Calculated?

An astrologer (or app) immediately compares your natal chart with the chart of your prospective mate during a synastry reading. This usually takes the form of a standard natal chart with a circle added around it. One partner’s natal chart is represented by the outside circle, and the other partner’s is represented by the inner circle. This arrangement makes it simple to compare the many features of two people’s planets and determine which planets are more similar to each other.

A Synastry Reading’s Aspects

Astrological charts of any kind feature aspects among the planets. In a synastry chart, they become much more significant because it shows the link between your planets and those of another person. The “major aspects” or most often utilized aspects are:


The energies of two planets unite and cooperate when they are near one another, usually in the same sign.


Two planets are in the same element when they are separated by 120 degrees, or four signs. The energy of a trine is balanced and flowing.


The energy also flows freely when two planets are 60 degrees apart, or two signs apart.

Square: The energy can feel stopped or obstructed when two planets are 90 degrees apart, or three signs apart.


Friction can occur when two planets in a chart are opposing one another. But this conflict will provide great teaching moments.

“Minor aspects” are those that are used less frequently. They could show up in a synastry chart reading. Their effects, however, typically have less of an impact than the main aspects’. They consist of:


In the case of two planets at a distance of 72 degrees (1/5 of the chart), energy can flow, particularly in the direction of creative endeavors.


The energy flows like a quintile when two planets are separated by two Quintiles, or 144 degrees.


The barrier is comparable to a square but weaker when two planets are half a square, or 45 degrees apart.

Inconjunt (Quinqunx):

Potential difficulties may arise when two planets are 150 degrees apart (five signs), which means they are totally absent from one another.

Sesquiquadrate (Sesquisquare):

When two planets are 135 degrees apart, there could be low-level tension or long-term conflict between them.

Where Can I Find A Reading for Synastry?

The majority of licensed astrologers also do synastry readings; some even focus exclusively on it. Expert astrologers consult with clients face-to-face, but many also do phone consultations or video chat sessions. Consult internet reviews or seek friends for referrals while looking for a trustworthy astrologer.

There are also a number of paid apps and websites that allow you to compare the astrological charts of two individuals. Synastry chart comparisons are typically a premium feature because they need more work than simply bringing up a natal chart, even though many astrology applications are available for free.

Additionally, there are numerous websites where you may obtain a synastry chart for free that doesn’t require much comparison or assessment. This can be a helpful tool for people who are familiar with astrology.

How a Synastry Reading Is Interpreted

Don’t act hastily if a synastry report has a few assertions that raise questions. First off, there are several ways that various astrological characteristics can manifest and numerous ways that astrology can be interpreted. An individual’s interpretation is just one viewpoint that could exist. It is hard to predict with certainty how astrological factors will transpire. For instance, several astrologers predicted a world-changing catastrophe prior to the 2020 COVID-19 epidemic, but they were unsure of what it would be.

Every synastry report or reading also includes elements of a relationship that are simple and difficult. Without one or the other of these, relationships cannot exist. Relationships require effort and sometimes be difficult. Astrology’s most challenging features also offer chances for growth and learning. Therefore, even though there can be “challenges,” you can view them as obstacles to overcome.

Keeping in mind that synastry is a sign in which you should not judge someone by just one component of their chart. Love-related phrases such as “I don’t date Scorpios” or “People with Gemini Rising drive me crazy” can easily cause one to feel hurt. The complete picture is created by the entire chart.

Astrology readings are excellent resources for determining compatibility. However, it might be more beneficial to look for potential means of resolving disputes and providing justifications for past events. For instance, if you discover that Neptune is squaring your partner’s Mercury after a miscommunication, you may conclude that this particular relationship requires you to communicate flawlessly and to express yourself clearly. By doing this, you can prevent miscommunications in the future.

Accepting someone for who they are can also be aided by synastry. You may tell that something is exactly how it is when you look at it in a synastry report. After that, you can decide whether to attempt accepting it and rise to the challenge or, if it doesn’t work for you, end the relationship.

Relationship patterns can also be identified with the use of astrological readings. People with comparable astrological traits may interest you. You may learn more about how those aspects interact with your natal planets and why you are drawn to particular people as well as how you manifest yourself in relationships by using synastry.

For Further Compatibility Information, View a Composite Chart

Lastly, there is another kind of chart that can be utilized to assess relationship compatibility if your synastry chart reading is really causing you anxiety. By combining your partner’s and your natal charts, a composite chart generates an entirely new chart. The midway point between the natal planets of both individuals is displayed as a new placement on a composite chart. Instead of comparing the two charts via synastry, some people view this as your relationship’s astrological chart. You may have more understanding of the characteristics and principles of your partnership as a result.