Home Synastry & Soulmates Soulmate/Compatibility Test

Soulmate/Compatibility Test

compatibility test

There are a variety of compatibility tests using astrological synastry on the web and some astrology programs like Kepler cater for synastry. So I was inspired to experiment with the Café Astrology compatibility ranking system* and came up with my own Soulmate/Compatibility Test. Could these tests be useful? They are objective after all and prevent your own love-sick bias from making a silk purse out of a sows ear.

I tried as many famous couples as I could find with an accurate birthtime and all the couples I knew personally. I wasn’t surprised Paul Newman and Joanne Woodward scored highly, but when I tried the others it all fell apart. After experimenting and stripping down the score I think I have come up with a formula that sorts out the wheat from the chaff.

I found the aspects that cut it time and time again are the classics. Forget your hyped-up outer planets, deluded Neptune and your karmic quincunxes. Space-dust and glitter! To find a rock solid, mutually supportive relationship that will weather the storms of modern life, I used Ptolemaic aspects and considered the following: Tight orbs between the Luminaries/Saturn and the relationship planets, also Luminaries/Saturn to the destiny points and AC/DC. I also looked at the Sun/Moon midpoint and Luminaries in the 1st/7th house.

I used this system on both the synastry and composite charts. Just using the interaspects didn’t work for some couples. Some of these were were surprisingly strong because of the weird magic that happens when you put an unlikely pair together.

Test Aspects

Café Astrology ranks the following as red alerts. These are highly stressful aspects that are supposed to be real “No-no’s”. You can get away with having one of these at the most they say: Moon square Saturn, Mercury square Mercury, Venus square Saturn and Mars square/opposition Saturn.

Horoscope Compatibility TestOn the other end of the scale there are the super aspects. I regard these as karmic-contract aspects.  These are top scoring aspects on Café Astrology, but I have added the Vertex conjunct North Node to that list since it was discovered to be significant in long term marriages according to Cosmic Technologies. I have found it to be significant. They are as follows: Sun or Moon in hard aspect to the Sun/Moon midpoint,  AC conjunct the North Node, Vertex conjunct the North Node, Sun or Moon conjunct or opposite Vertex,  Sun or Moon conjunct DC.

These may bump up the score in a relationship that isn’t really long term. These are usually catalyst relationships and their sole purpose is pulling you onto the right karmic path. They may do this for example by splitting up a failed marriage,  or pulling someone out of drug addiction. When this is achieved the relationship ends pretty quickly.

Test Scores Red Alerts


Paul Newman & Joanne Woodward (45) – Mars square Saturn
Angelina Jolie & Brad Pitt (36)
Bobby Brown & Whitney Houston (34) – Mars Square Saturn
Tim Robbins & Susan Sarandon (33)
Victoria & David Beckham (32)
Paul & Linda McCartney (32)
Goldie Hawn & Kirt Russell (32) – Venus square Saturn, Moon square Saturn
John Lennon & Yoko Ono (31)
Catherine Zeta-Jones & Michael Douglas (31)
Marie & Pierre Curie (29)
Elizabeth Taylor & Richard Burton (29) – Mercury square Mercury, Mars opposite Saturn
Bill & Hilary Clinton (28) – Moon square Saturn.


Antonio Banderas & Melanie Griffith (25) – Mars opposite Saturn
Demi Moore & Bruce Willis (23) Moon square Saturn, Mars opposite Saturn
Robert & Elizabeth Browning (22)
Sean Penn & Madonna (22)
Queen Victoria & Albert (21)
Sonny & Cher (18) –  Mars square Saturn
Farrah Fawcett and Ryan O’Neal (18)
Edward 8th & Wallis Simpson (17)
Tom Hanks & Rita Wilson (16)

Test Results

Café AstrologyUNDER 17 you get lovers or co-dependant marriages. Charles & Camila got just 11. Though they may just be the anomaly. Strong composites could offset everything…. UNDER 10 I think you are getting into very sparse territory and the relationship would most probably be just sexual with very little else.

Goldie and Kirt’s two Saturn red flags glued them together for 21 years before their relationship “Lost it’s Zip”. Had Mars been involved rather than Venus it probably would’ve cracked earlier. Indeed most of the Saturn/Mars red alert couples have split up.

So you see it is not as simple as getting a high soulmate score or feeling doomed because you have two red alerts. Not all soulmates stay married and not all marrieds are soul mates. Once you have the score, then you can then look into the synastry and see what specifically is pulling a couple together. You could still have a very high score with someone who you are not sexually attracted to at all, this could be with a best friend or child. I think this system helps establish if there is a solid framework for the romance and the magic to hang onto. It is also good if you want to compare two lovers when you can’t decide.

I am offering this scoring service as part of the synastry reading, it helps give a base line before looking into the matter more deeply.

I use very tight aspects for my synastry readings so this is reflected in the love test also. I start at 4º for an applying conjunction to a luminary going down to 1º30 for a separating sextile to a planet. I do use the very important karmic quincunxes in a Synastry reading, I just like to get a realistic grass-roots score for the Soulmate test and take it up from there.

* Compatibility Rating Tool, Café Astrology.


  1. Agree – i have since 2012 a Partnership which has exactly this hard aspects like :

    Mars Quadrat Saturn
    Saturn Quadrat Saturn
    Merkur Quadrat Merkur

    Pluto Quadrat Sun
    Pluto Quadrat Moon

    But we have also a lot of good hamonics between Sun , Moon , Venus & AC and also to Uranus
    North Node conj. MC
    North Node conj. Pluto

    ( i have to say we are both creative people and our partnership started uranisch or neptunisch ?!not sure 😀 …he had a Jupiter reto. Transit about his Venus konj. Saturn when we came together.It was a apokalyptisch start between us…the first year was dramatic…sometimes a bit too much from all :-)) …but we were also a good creative team and worked together on music…my beeing jealousy was/is a problem (Pluto qudrat Sun + Moon )- there was 1 Situation where i lost complete my trust …since then is Pluto always in me pushing to control with stupid question -of course subtil-i am a skorpio :-)) ….ah well…
    We got this summer a baby – a ” Love child ” …but our Partnership is so difficult just right now ( i guess the saturn qudrat saturn ) – and i have T Saturn since September in Haus 7 :-/ ….. i think about ” 2016 to leave him – maybe at first without stopping Partnership -but i need Distanz …i need my own room …also our baby needs Stability and Rhytmus & Harmony ….in a 1 Room Appartment 43qm is living together with such aspects for me not anymore possible…. okay ,i have to stop… its early here in germany ….really nice blog here….found it today … soon i have to read more here 🙂

    ah sorry – i said something stupid :

    we have not merkur quadrat merkur – its a trigon between
    the same between our mars .
    Pluto trigon AC
    Pluto trigon venus
    North Node trigon AC

    okay …i stop now :-))