Relationship Astrology Techniques: Synastry, Composite, Davison, and Coalescent Charts

Rebecca M. Farrar, M.A.
6 min readSep 15, 2023

While astrology can be an incredible tool for individual awareness, it can also shed a lot of clarity on relational dynamics. One of the ways I see astrology as being useful is through chart comparison. We can see what someone lights up in us or comes alive through our relating. In astrology several techniques exist for this inquiry whether it be for exploring between romantic partners, business partners, family members, or friends.

In my relationship sessions with clients, I do my best to focus on what is the charts in a matter of fact way. The charts tell us potential, not necessarily future. I’ve seen thousands of charts together, some that looked amazing and two people couldn’t seem to make it work…and others where I couldn’t’ find the relationship glue and yet they seemed incredibly happy.

For this reason, with clients I often suggest not to look at anyone’s chart until 6 months of knowing someone, or as a tool for reflection once it ends rather than prediction before it begins.

While we often associate relationships with romance, all of the techniques below can be applied to any type of relationship, including friendships, family dynamics, and even professional collaborations. By analyzing the charts with these techniques between two individuals, astrologers can offer valuable insights into the nature of their interactions, helping them navigate challenges and capitalize on their strengths.

To me relationships help us understand ourselves and others, we gain a deeper appreciation for the complexity of human connections and the potential for growth and transformation through shared experiences and astrology can help.

Synastry Charts: You v. Me

Synastry is the art and science of comparing two or more birth charts to understand the potential interactions and dynamics between individuals. Birth charts, also known as natal charts, are graphical representations of the positions of celestial bodies at the exact time and location of a person’s birth. These charts are like cosmic snapshots, capturing the unique cosmic energy imprinted upon an individual at the moment of their arrival into the world.



Rebecca M. Farrar, M.A.

Enchanted with Earth & Ether | M.A. Philosophy, Cosmology, Consciousness | Archetypal Astrologer & Writer |