The Absolute Best Synastry Aspects for Love and Compatibility

March 7, 2023July 31, 2026 astrologyanonymous27

This article goes over the best synastry aspects when it comes to deep love, compatibility and long-term potential.

The Synastry Chart, in addition to the Composite Chart, provides much insight into overall compatibility of a couple. The Composite Chart represents the relationship itself and what the two of you create when you are together. Synastry, on the other hand, explains how two people affect and influence each other directly. Both are very important to consider in a relationship.

What are the absolute best synastry aspects for true partnership and compatibility?

Check out my new books, Cosmic Fortune: The Astrology of Lottery Winners , Predict Love with Astrology, and Fall In Love with Astrology!

Interested in a personal consultation from me? Book one today

Well-Aspected 7th House Rulers

What is your 7th house ruler?

If your 1st house is in Aries, your 7th house ruler is Venus
If your 1st house is in Taurus, your 7th house ruler is Pluto
If your 1st house is in Gemini, your 7th house ruler is Jupiter
If your 1st house is in Cancer, your 7th house ruler is Saturn
If your 1st house is in Leo, your house ruler is Uranus
If your 1st house is in Virgo, your house ruler is Neptune
If your 1st house is in Libra, your house ruler is Mars
If your 1st house is in Scorpio, your house ruler is Venus
If your 1st house is in Sagittarius, your 7th house ruler is Mercury
If your 1st house is in Capricorn, your 7th house ruler is your Moon
If your 1st house is in Aquarius, your 7th house ruler is your Sun
If your 1st house is in Pisces, your 7th house ruler is Mercury

I’ve said it before, and I’ll say it again: the 7th house ruler for each partner is very important in synastry. The 7th house represents commitment and partnership, so you can tell a lot about a relationship when looking at how each person’s 7th house ruler is aspected.

One person’s 7th house ruler conjunct the other person’s angles
One person’s 7th house ruler conjunct the other person’s Nodes
One person’s 7th house ruler conjunct the other person’s Vertex
One person’s 7th house ruler conjunct the other person’s Juno
One person’s 7th house ruler conjunct the other person’s planets (Sun, Moon, Venus, Jupiter, Saturn, 1st house ruler, and/or 7th house)
One person’s 7th house ruler in the other person’s 1st or 7th house

Challenging aspects to the 7th house ruler can indicate barriers and difficulties in forming a partnership.

If your 7th house ruler receives a square from your partner’s Saturn, for example, it may be difficult to get the relationships off the ground. There may be obstacles and barriers to you being together.

If your Uranus is square your partner’s 7th house ruler, you bring an unstable and unpredictable energy to your partner’s area of partnership and commitment. Your partner likely sees you as someone undependable and erratic, and it may be difficult for you to make a full commitment to each other.

romantic couple sits by ocean with palm tree at sunset

Photo by Rafael Leão on Unsplash

Personal planets conjunct the North Node (especially Sun, Moon, Venus or ruler of the 7th house)

If your planet makes a conjunction to another person’s North Node, there is a feeling that the two of you are heading somewhere together. Both partners can feel progress taking place when they are with each other. It’s a bizarre feeling to explain: it may feel uncomfortable, but it also feels right.

The planet person is guiding the North Node person towards their potential and encouraging them to come out of their comfort zone. This aspect tends to bind people together for a long time, for the feeling of fate is very strong.

What about the South Node? This CAN bind people together for a very long time, and usually does. However, the South Node is very draining, especially for the planet person, so it might not work out in the long run. Much depends on how comfortable each partner is with their South Node energies. Check out my South Node article to find out more.

Conjunction to Vertex (especially inner planets and angles)

So many long term couples have significant Vertex contacts in synastry, especially when they involve inner planets and angles. For example, one person’s Sun conjunct another person’s Vertex.

The Vertex is seen as a point of fate, so someone who has strong Vertex aspects with you impacts you powerfully. It feels like this relationship is meant to be, and you can feel this when you are together.

The Sun/Moon Midpoint

I’ve covered the significance of the Sun/Moon Midpoint in this article, however, it is worth repeating how important this point is when it comes to synastry analysis.

Aspects to look out for include:

One person’s angles in hard aspect to the other person’s Sun/Moon Midpoint
One person’s planets (especially Sun, Moon, Venus) in hard aspect to the other person’s Sun/Moon Midpoint
One person’s Vertex or Nodes conjunct or opposite the other person’s Sun/Moon Midpoint

Photo by Mohamed Nohassi on Unsplash

Saturn

Saturn is the glue that holds a relationship together, so it is important to have some Saturn aspects in your synastry (and Composite chart) to keep things stable and long-lasting.

Saturn can feel both limiting and rewarding, and this depends on how Saturn is handled by each partner in their own natal charts, as well as how their Saturns aspect each other’s planets and angles. People with heavy Capricorn or Saturnian charts may have an easier time with hard Saturn synastry, as they ‘expect’ and are used to things being difficult!

Sextiles, trines, and even conjunctions of one person’s Saturn to another person’s inner planets and angles promote longevity and responsibility in the relationship.

At the same time, I often see hard Saturn aspects in the synastry of successful couples, which can be surprising, given the harsh nature of the planet. In these charts, there are many other aspects which ‘soften out’ Saturn’s harsh edge (Jupiter and Neptune aspects especially).

Aspects to look for:

Saturn conjunct Sun, Moon, Venus, 7th house ruler, 1st house ruler
Saturn conjunct angles (especially Saturn conjunct IC)
Saturn conjunct North Node or South Node

House overlays in “relationship” houses

These houses are: the 1st house, 4th house, 5th house, 7th house and 8th house.

The 1st house represents one’s physical appearance and persona. If someone’s planets fall in this house, there is a good indication of attraction, or at least taking notice of you. Venus and Mars in this house are especially sexy.

The 4th house represents one’s home, family, and past. Someone’s planets in your 4th house indicates they impact you on a deep level. The 4th house is a watery, emotional house, so this person may bring you in touch with deep emotions.

The 5th house represents fun, games, and romance, so planets overlaying in this house indicates a strong bond between the individuals. The house person feels more romantic and flirty around the planet person, and there the two of them feel very good when they are together.

The 7th house represents partnerships and formal commitments, so it is no surprise that this house is important when it comes to relationships. When someone’s planets fall in your 7th house, you cannot help but want to partner with them in some way. You naturally want to build an equal and harmonious bond with them, and want their input in your decisions. They force you to look at the other side of the coin and see a different perspective, almost like they are a mirror to you.

The 8th house represents sex, intimacy, and passion, so this house is an important one to consider in synastry. When someone’s planets fall in your 8th house, they bring up very intense feelings from you. You cannot feel indifferent to them; there is usually a love-hate theme in the relationship. You love them passionately, but despise them equally when you feel upset with them. Sex and intimacy are taken to another level in 8th house relationships; you truly feel you want to merge with each other.

Please note: you should look at the house overlays of both partners. If you find that one person’s planets overlay onto your ‘relationship houses’, while your planets do not overlays onto their ‘relationship houses’, an imbalanced relationship can be indicated.

For example, if my Sun falls in your 8th house, you feel very strongly for me. I bring out very deep and intense feelings out of you, and you feel I have a transformative effect on your life. If your Sun falls in my 11th house, I might not feel the same way. I might see you as more of a friend than a lover, which might be devastating for you.

silhouette of romantic couple at sunset on beach

Photo by Nathan Dumlao on Unsplash

Sun conjunct Venus (trine, opposition, and sextile also work)

Venus represents love and beauty, while the Sun represents one’s essence and true self. Aspects between these two planets indicate love, pure and simple. This is not a wildly obsessive, romantic type of love, as it is commonly seen in the charts of good friends and family members. In a romantic relationship, however, this aspect is wonderful, for it increases the compatibility between you, and signifies that you really ‘like’ each other!

Moon or Venus in the same sign (i.e. Moon conjunct Moon, Venus conjunct Venus)

I’ve seen way too many of these aspects in synastry charts, so I had to mention them! The Moon represents our emotional nature, so when it is in conjunction to another person’s Moon, emotional compatibility is indicated.

The same can be said about Venus – these two express love in the same way, so it makes sense that they would be happy together. There is an intuitive understanding between them, and neither has to explain themselves too much. They just *get* each other.

Venus conjunct, sextile, or trine Pluto

I had to add Venus-Pluto to this list. It is the ultimate ‘Beauty and the Beast’ aspect, as it indicates the blending of love (Venus) and intense passion (Pluto).

Hard aspects can be hard to deal with, depending on your personality. Some people simply need drama and intensity in their relationships, so they can ‘handle’ hard Venus-Pluto aspects.

Softer aspects, however, are much easier to deal with. They inject a good amount of intensity and passion without being overwhelming. There is a deep love and intensity between the couple without the power struggles and intense jealousy that come with the hard aspects.

The conjunction is a very powerful aspect. It indicates deep desire, jealousy, obsession and love, and it all-consuming for both parties. This type of love transforms the couple, and they see each other as soulmates.

Mars sextile or trine Pluto

This aspect is another one of my favourites. The sexual connection in this case is off the charts!

Mars represents sex and energy, while Pluto represents intensity and passion. As you can imagine, the blending of these two planets indicates a lasting sexual connection.

In this relationship, sex is fulfilling and satisfying for both parties.

Sun conjunct Moon (trine, opposition, and sextile also work)

The Sun represents ones essence and personality, while the Moon represents our emotions and what makes us feel secure. Positive aspects between the Sun and Moon in synastry indicate a ‘marriage’ between the yin and yang. The Sun person feels supported and cared for by the Moon person, and the Moon person feels safe and loved by the Sun person. Together, they make a great team. The opposition is also potent in synastry because it indicates a lot of fascination and attraction between the couple. As they say, “opposites attract”!

Moon conjunct Venus (trine, opposition, and sextile also work)

I may be biased because I have had this aspect so many times (particularly the conjunction), but it is truly a magical connection to share with someone. This is such a sweet, caring and loving aspect. The two people feel very ‘at home’ with each other. Expressing your love and emotions to one another feels easier than usual. You bring out each other’s sweetness and vulnerability. This is such a perfect aspect to find in a synastry chart.

Venus conjunct Mars (trine, opposition, and sextile also work)

Interaspects between Venus and Mars are so spicy hot and deserve a spot in my list of best synastry aspects! These aspects indicate the blending of love with sex, leading to much passion and desire. I’ve found this aspect keeps the fire burning between a couple for a very long time, which is so important when it comes to keeping a relationship fresh. Sex is satisfying and usually quite frequent. The two of you intuitively know how to turn each other on, and can barely keep your hands off each other.

Click here to read The Absolute Best Composite Aspects

Click here to return to the Relationships page

Sun Moon Midpoint Synastry: The Marriage Connection in Astrology

November 9, 2012July 28, 2026 astrologyanonymous271 Comment

When one of your inner planets (Sun, Moon, Mercury, Venus, Mars) or important points (North/South Node, Vertex, Sun/Moon midpoint, Ascendant/Descendant, IC/MC axis) makes a hard aspect (conjunction, square, opposition) to another person’s Sun/Moon midpoint, a significant bond is indicated.

Check out my new books, Cosmic Fortune: The Astrology of Lottery Winners , Predict Love with Astrology, and Fall In Love with Astrology!

Interested in a personal consultation from me? Book one today

What is the Sun Moon Midpoint?

The Sun/Moon midpoint is a very sensitive point, which represents the synthesis of one’s ego expression and emotional energy. This point has been said to represent a point of “inner marriage” and represents our closest relationships, as it represents the synthesis of our masculine (Sun) and feminine (Moon) energies.

You’ll often find synastry aspects involving the Sun/Moon midpoint in the synastry charts of significant relationships. In this case, the planet person brings the Midpoint person’s feminine and masculine energies together, making them feel complete.

The person whose Sun/Moon midpoint is activated is likely to feel more balanced around the planet person. You feel like you belong together, and the attraction is irresistible. The Midpoint person is generally the one who feels more attracted, based on this aspect.

My ex-boyfriend’s Sun is conjunct my Sun/Moon midpoint, and my Sun is conjunct his Sun/Venus midpoint. The attraction was immediate, and I felt I had found the “one.” He, too, felt that I was the perfect mate.

I certainly did feel very balanced and ‘complete’ around him; I felt so satisfied and content when we were together. Even though we broke up a while ago, I still feel love for him, and think of him often.

My Venus is conjunct my other ex-boyfriend’s Sun/Moon midpoint. He always told me he felt I was the “perfect woman.” I felt very comfortable around him, but my attraction to him was not as strong as his attraction to me.

Sun Conjunct, Square, or Opposite the Sun/Moon Midpoint

The Sun represents our core identity, vitality, and sense of purpose. When one person’s Sun aspects another person’s Sun/Moon midpoint, the midpoint owner feels that the Sun person completes an important part of their identity. The Sun person naturally encourages the midpoint owner to become more authentic and confident. This is often found in long-term relationships because the midpoint owner feels that the Sun person embodies many of the qualities they seek in a life partner.

With the square or opposition, the attraction remains strong, but the Sun person may challenge the midpoint owner’s sense of balance or identity. Over time, these aspects encourage growth through compromise.

Moon Conjunct, Square, or Opposite the Sun/Moon Midpoint

The Moon represents emotions, comfort, and security. When the Moon contacts the Sun/Moon midpoint, the midpoint owner feels emotionally understood and accepted. The Moon person instinctively knows how to comfort the midpoint owner, creating a strong feeling of familiarity and emotional closeness.

Hard aspects can create emotional misunderstandings or moodiness, but they also produce a powerful emotional attachment that is difficult to ignore.

Mercury Conjunct, Square, or Opposite the Sun/Moon Midpoint

Mercury rules communication, learning, and thought processes. The Mercury person easily stimulates the midpoint owner’s mind and often understands how they think. Conversation flows naturally, and the midpoint owner feels intellectually accepted.

With the square or opposition, communication may become argumentative or filled with misunderstandings. Even so, these aspects often create constant interaction because neither person can easily ignore the other’s opinions.

Venus Conjunct, Square, or Opposite the Sun/Moon Midpoint

Venus represents love, affection, beauty, and relationships. This is one of the strongest romantic midpoint contacts. The midpoint owner feels deeply appreciated, loved, and attractive in the Venus person’s presence. The Venus person’s style, charm, and affection closely match the midpoint owner’s relationship ideal.

Hard aspects can create unrealistic expectations or differences in love languages, but attraction usually remains very strong.

Mars Conjunct, Square, or Opposite the Sun/Moon Midpoint

Mars brings passion, confidence, and sexual chemistry to the relationship. The Mars person energizes the midpoint owner, encouraging them to take action and pursue their desires. Physical attraction is often immediate.

Squares and oppositions increase competitiveness, impatience, and conflict, but they also produce powerful sexual tension that can be difficult to resist.

Jupiter Conjunct, Square, or Opposite the Sun/Moon Midpoint

Jupiter expands whatever it touches. The Jupiter person encourages the midpoint owner to grow, dream bigger, and have confidence in themselves. The midpoint owner often feels happier and more optimistic when they are together.

With hard aspects, one or both people may promise more than they can realistically deliver. Differences in beliefs, values, or life goals may also become apparent over time.

Saturn Conjunct, Square, or Opposite the Sun/Moon Midpoint

Saturn creates one of the strongest indicators of commitment and longevity. The Saturn person provides stability, reliability, and structure to the midpoint owner. Relationships with this contact often feel serious and significant from the beginning.

Squares and oppositions can feel restrictive. The midpoint owner may sometimes feel criticized or limited by Saturn, while Saturn may feel responsible for the midpoint owner’s well-being. If handled maturely, these aspects can create lasting commitment.

Uranus Conjunct, Square, or Opposite the Sun/Moon Midpoint

Uranus brings excitement, freedom, and unpredictability. The Uranus person awakens the midpoint owner and encourages them to embrace their individuality. The relationship rarely feels boring.

Hard aspects create an unstable dynamic. The relationship may experience sudden beginnings, breakups, reunions, or unexpected changes. Both people need plenty of freedom for the relationship to thrive.

Neptune Conjunct, Square, or Opposite the Sun/Moon Midpoint

Neptune creates an almost magical feeling between the two of you. The midpoint owner often idealizes the Neptune person and feels spiritually or emotionally connected to them. Compassion, romance, and creativity are emphasized.

Squares and oppositions increase the risk of confusion, unrealistic expectations, disappointment, or deception. Healthy boundaries are essential with this contact.

Pluto Conjunct, Square, or Opposite the Sun/Moon Midpoint

Pluto produces a profound and transformative connection. The midpoint owner feels deeply affected by the Pluto person, and the relationship often changes both people’s lives. Emotional and sexual intensity is extremely high.

Hard aspects increase the likelihood of power struggles, jealousy, possessiveness, and emotional extremes. Even after separation, the relationship is often impossible to forget.

Ascendant Conjunct, Square, or Opposite the Sun/Moon Midpoint

The Ascendant represents physical appearance, personality, and first impressions. The midpoint owner is strongly aware of the Ascendant person’s presence and often finds them physically attractive. The Ascendant person naturally reflects qualities the midpoint owner seeks in a partner.

Squares and oppositions can produce different approaches to life, but attraction usually remains strong.

Midheaven (MC) Conjunct, Square, or Opposite the Sun/Moon Midpoint

The Midheaven represents career, ambitions, and public reputation. The MC person inspires the midpoint owner to pursue success and long-term goals. The midpoint owner often admires the MC person’s achievements or direction in life.

Hard aspects can create disagreements about career priorities, social status, or future ambitions, but they often motivate both people to grow.

Imum Coeli (IC) Conjunct, Square, or Opposite the Sun/Moon Midpoint

The IC represents home, family, roots, and emotional security. The IC person makes the midpoint owner feel at home and emotionally grounded. This contact is frequently seen in relationships where living together or building a family becomes important.

Squares and oppositions may bring differences in family backgrounds or domestic expectations that require compromise.

North Node Conjunct, Square, or Opposite the Sun/Moon Midpoint

The North Node brings a powerful sense of destiny. The midpoint owner often feels the relationship is meant to happen and that the North Node person plays an important role in their personal growth. This contact frequently appears in significant, life-changing relationships.

Hard aspects suggest that growth comes through challenges, but the connection still feels meaningful and difficult to ignore.

South Node Conjunct, Square, or Opposite the Sun/Moon Midpoint

The South Node creates an immediate feeling of familiarity. The midpoint owner often feels as though they have known the South Node person forever. There is a strong sense of comfort and emotional recognition.

With the square or opposition, the relationship may become stuck in old habits or unhealthy patterns. While the familiarity is comforting, both people may need to avoid relying too heavily on the past instead of continuing to grow together.

Vertex to Sun/Moon midpoint aspects:

This aspect indicates a fated, karmic connection. The two of you feel as though you are meant to be with each other. This is likely to be a life-changing relationship.

Click here to return to the Synastry Page