2027 Forecast

Synastry aspects

Synastry aspects here cover all 382 combinations people search for, each with how often it turns up between two people by chance.

The most asked-about pairings: Mars Opposition Venus, Mars Square Pluto, Mars Conjunction Moon, Mars Square Moon, Pluto Square Venus, Lilith Opposition Venus, Mars Opposition Sun, Sun Conjunction Venus, Saturn Square Sun, Moon Conjunction Pluto, Ascendant Opposition Mars and Mars Conjunction Pluto.

Synastry Aspects: All 382, With the Odds of Each

Arithmetic, not interpretation

Every aspect has a base rate

An aspect is an angle with a tolerance called an orb, so the chance of hitting it at random is simply the size of the window divided by the circle: two times the orb over 360 degrees. Conjunctions and oppositions have one window, the rest have two.

AspectAngleOrbOdds by chanceRead as
Conjunction 0° ±8° 4.44% fusion
Sextile 60° ±6° 6.67% ease
Square 90° ±8° 8.89% friction
Trine 120° ±8° 8.89% flow
Opposition 180° ±8° 4.44% polarity
Quincunx 150° ±3° 3.33% mismatch

A square lands in 8.89% of random pairings — roughly one couple in eleven, with no meaning attached. A synastry comparison looks at dozens of planet pairs, so finding several aspects is the expected outcome, not a signal. That does not make the readings worthless; it means the interesting question is which aspects are tight rather than which exist.

How the couple figures on each aspect page are counted

The base rate above assumes planets are spread evenly round the zodiac. Real people are not: partners are usually born within a few years of each other, so the slow planets sit in almost the same place in both charts. Each aspect page therefore gives a second figure from our own simulation of 3,000,000 couples: the first partner born on a random date from 1950 to 2000, the second within five years either side, both at a random time of day. Planets come from NASA JPL’s DE440 ephemeris, Chiron and Juno from JPL Horizons, the mean node and Lilith from Meeus’s formulas, and the ascendant, midheaven and vertex are worked out for the latitude of New York. For fast planets the result matches the base rate; for slow ones it can be nothing like it — Neptune sextile Pluto turns up in 52.6% of such couples, Neptune square Pluto in none.

Two in five involve a slow planet — but only 44 depend on your age gap

20 years Pluto spends about that long in one sign. Neptune 14, Uranus 7, Chiron 4.
40.1% of the combinations people ask about involve at least one of those slow planets — 153 of 382.
44 of 382 change by 3 points or more between partners born the same year and 40 years apart.

Do Pluto and Neptune aspects just describe the age gap?

Only when both planets are slow. Pluto's sign is shared by everyone born within about twenty years, but an aspect needs two planets, and when the other one is fast — the Moon, Venus, Mars, the ascendant — it can sit anywhere in a partner's chart. Venus square Pluto turns up in 8.77% to 9.11% of couples whatever their age gap, from the same year to forty years apart. When both are slow the calendar does decide: Neptune sextile Pluto is in 86.14% of couples born less than a year apart and in none born 6 or more years apart.

Share of couples with the aspect, one way round, by age gap
Share of couples with the aspect, one way round, by age gap Solid: Neptune sextile Pluto, 86.14% of couples born less than a year apart and none from 6 years apart. Dashed: Venus square Pluto, between 8.77% and 9.11% at every gap from 0 to 40 years. One partner born 1950–2000. Born within five years: the couples figure0%50%100%0510203040 yrsNeptune–PlutoVenus–PlutoNeptune sextile Pluto 86.14%Neptune sextile Pluto 86.14%Neptune–PlutoVenus–PlutoSource: AstroHot simulation, 12 million couples, NASA JPL DE440astrohot.com

Solid: Neptune sextile Pluto, 86.14% of couples born less than a year apart and none from 6 years apart. Dashed: Venus square Pluto, between 8.77% and 9.11% at every gap from 0 to 40 years. One partner born 1950–2000.

Every combination

All 382 combinations

Mars opposition Venus 8,100 Mars square Pluto 4,000 Mars conjunction Moon 3,620 Mars square Moon 3,190 Pluto square Venus 3,170 Lilith opposition Venus 3,070 Mars opposition Sun 2,450 Sun conjunction Venus 2,440 Saturn square Sun 2,420 Moon conjunction Pluto 1,940 Ascendant opposition Mars 1,900 Mars conjunction Pluto 1,900 Node square Sun 1,860 Moon square Pluto 1,830 Saturn square Venus 1,760 Sun square Venus 1,740 Mars trine Moon 1,600 Moon square Venus 1,460 Pluto square Sun 1,430 Moon opposition Venus 1,330 Mars square Sun 1,140 Pluto trine Venus 1,070 Moon opposition Saturn 1,050 Moon trine Pluto 1,020 Mercury square Moon 1,000 Moon opposition Sun 990 Node trine Pluto 970 Moon square Sun 970 Mars square Neptune 790 Pluto sextile Venus 770 Moon square Saturn 770 Uranus square Venus 760 Uranus opposition Venus 750 Pluto trine Sun 750 Mars opposition Neptune 740 Ascendant square Moon 670 Ascendant trine Venus 660 Jupiter square Mars 630 Mars square Mercury 590 Mercury square Sun 590 Pluto square Saturn 590 Mars sextile Pluto 570 Ascendant trine Mars 550 Jupiter square Sun 550 Node trine Venus 540 Chiron square Node 530 Mars trine Pluto 530 Moon square Neptune 530 Mars square Uranus 520 Lilith square Mars 520 Saturn trine Sun 510 Mercury trine Venus 510 Saturn trine Venus 510 Moon trine Neptune 480 Ascendant trine Juno 480 Ascendant trine Moon 460 Jupiter square Moon 460 Node square Venus 440 Mars sextile Moon 440 Mars opposition Saturn 430 Juno trine Pluto 430 Sun sextile Venus 430 Neptune square Sun 430 Mars sextile Sun 420 Lilith trine Mars 420 Mars sextile Venus 410 Moon sextile Sun 400 Ascendant square Chiron 390 Moon square Uranus 390 Mercury square Venus 390 Mercury square Pluto 390 Ascendant sextile Venus 390 Ascendant square Sun 380 Mars square Venus 380 Chiron square Saturn 370 Moon trine Saturn 360 Moon sextile Venus 360 Lilith square Sun 340 Moon trine Node 330 Mercury square Saturn 320 Pluto sextile Sun 320 Lilith square Venus 320 Pluto trine Saturn 320 Ascendant trine Pluto 320 Lilith trine Sun 320 Mars opposition Uranus 320 Jupiter sextile Venus 320 Mars trine Mercury 310 Lilith square Moon 310 Lilith trine Moon 310 Ascendant square Mars 300 Moon square Node 300 Moon sextile Pluto 290 Mars trine Neptune 290 Ascendant trine Sun 290 Mercury opposition Venus 280 Mercury square Neptune 280 Lilith trine Pluto 280 Neptune sextile Venus 260 Neptune conjunction Saturn 260 Jupiter opposition Mars 260 Moon trine Uranus 260 Chiron square Venus 260 Lilith trine Venus 260 Ascendant square Saturn 260 Jupiter trine Sun 260 Ascendant square Pluto 260 Ascendant square Venus 260 Node sextile Venus 260 Mercury sextile Venus 250 Jupiter square Pluto 250 Node square Pluto 240 Ascendant trine Saturn 240 Node square Saturn 240 Mars square Node 230 Mercury trine Pluto 230 Jupiter trine Pluto 230 Mercury trine Sun 230 Mars trine Venus 230 Node trine Sun 220 Neptune sextile Pluto 220 Lilith sextile Venus 220 Jupiter trine Saturn 210 Saturn sextile Venus 210 Chiron trine Moon 210 Neptune trine Sun 210 Jupiter square Venus 210 Jupiter square Saturn 210 Ascendant sextile Mars 210 Ascendant square Lilith 210 Moon sextile Neptune 210 Jupiter sextile Moon 210 Node trine Saturn 210 Mars trine Node 210 Jupiter trine Mars 200 Mercury trine Saturn 200 Ascendant sextile Pluto 190 Ascendant trine Lilith 190 Neptune sextile Sun 180 Jupiter square Mercury 180 Jupiter sextile Sun 180 Lilith sextile Sun 180 Jupiter sextile Mars 180 Juno trine Venus 180 Jupiter trine Mercury 180 Chiron square Moon 180 Ascendant opposition Sun 170 Pluto square Uranus 170 Saturn square Uranus 170 Ascendant opposition Saturn 170 Mars trine Saturn 170 Venus square Vertex 170 Lilith opposition Mars 170 Chiron square Sun 170 Neptune square Saturn 170 Lilith square Pluto 170 Chiron square Mars 170 Mars sextile Neptune 160 Ascendant trine Neptune 160 Mars sextile Uranus 160 Ascendant square Neptune 160 Ascendant sextile Sun 160 Mercury sextile Sun 160 Ascendant trine Jupiter 160 Mercury sextile Moon 160 Jupiter square Neptune 160 Mars sextile Mercury 160 Neptune square Pluto 140 Juno square Venus 140 Chiron trine Mars 140 Chiron square Pluto 140 Mars quincunx Venus 140 Mercury trine Neptune 140 Mercury trine Moon 140 Neptune opposition Venus 140 Sun square Uranus 140 Node sextile Sun 140 Ascendant square Uranus 140 Moon sextile Uranus 140 Moon sextile Node 140 Lilith sextile Moon 140 Pluto sextile Uranus 140 Lilith sextile Pluto 140 Ascendant trine Mercury 130 Ascendant square Jupiter 130 Sun trine Venus 130 Moon trine Venus 120 Chiron sextile Venus 120 Jupiter trine Node 120 Juno trine Sun 120 Mercury sextile Pluto 120 Jupiter trine Lilith 120 Pluto sextile Saturn 120 Juno trine Saturn 120 Lilith square Saturn 120 Mercury sextile Saturn 120 Lilith trine Mercury 120 Neptune trine Saturn 110 Moon sextile Saturn 110 Moon opposition Uranus 110 Juno trine Mars 110 Mercury opposition Pluto 110 Sun square Vertex 110 Mars sextile Saturn 110 Jupiter square Uranus 110 Ascendant trine Uranus 110 Jupiter square Node 110 Mars trine Sun 110 Sun sextile Uranus 110 Lilith square Mercury 100 Lilith trine Saturn 100 Juno trine Node 100 Ascendant opposition Neptune 90 Jupiter trine Uranus 90 Ascendant square Mercury 90 Uranus sextile Venus 90 Chiron trine Saturn 90 Lilith sextile Mars 90 Saturn sextile Sun 90 Mars conjunction Sun 90 Pluto opposition Venus 90 Venus trine Vertex 90 Juno trine Moon 90 Jupiter square Lilith 90 Lilith square Neptune 90 Pluto quincunx Venus 90 Ascendant square Node 90 Neptune trine Node 90 Jupiter sextile Mercury 90 Lilith trine Neptune 90 Mars sextile Node 90 Saturn trine Uranus 90 Moon square Vertex 90 Neptune square Node 80 Juno square Sun 80 Mercury trine Node 80 Node trine Uranus 80 Juno sextile Venus 80 Mercury square Node 80 Node sextile Pluto 80 Juno trine Jupiter 80 Moon conjunction Sun 80 Chiron sextile Mars 80 Mercury trine Uranus 70 Ascendant sextile Lilith 70 Moon quincunx Sun 70 Chiron opposition Mars 70 Sun trine Uranus 70 Jupiter opposition Pluto 70 Ascendant trine Node 70 Ascendant sextile Saturn 70 Node square Uranus 70 Moon conjunction Venus 70 Juno square Pluto 70 Sun trine Vertex 70 Pluto conjunction Venus 70 Mercury sextile Neptune 70 Lilith square Uranus 70 Juno square Mars 70 Lilith trine Uranus 70 Juno square Moon 70 Lilith trine Node 70 Midheaven trine Venus 60 Juno trine Lilith 60 Node trine Vertex 50 Ascendant opposition Node 50 Neptune square Venus 50 Moon conjunction Saturn 50 Juno square Saturn 50 Mars trine Vertex 50 Mars square Saturn 50 Venus sextile Vertex 50 Jupiter sextile Pluto 50 Moon trine Vertex 50 Moon trine Sun 50 Ascendant sextile Neptune 50 Ascendant sextile Jupiter 50 Chiron sextile Moon 50 Moon opposition Pluto 50 Jupiter sextile Neptune 50 Juno square Lilith 50 Sun quincunx Venus 50 Jupiter conjunction Moon 40 Ascendant sextile Moon 40 Ascendant trine Chiron 40 Saturn quincunx Venus 40 Mars opposition Moon 40 Node sextile Saturn 40 Saturn opposition Sun 40 Lilith square Node 40 Chiron square Jupiter 40 Ascendant sextile Mercury 40 Uranus trine Venus 40 Node square Vertex 40 Pluto quincunx Sun 40 Jupiter trine Venus 40 Neptune trine Venus 40 Moon quincunx Venus 40 Chiron sextile Sun 40 Chiron square Mercury 40 Jupiter sextile Node 40 Ascendant trine Vertex 40 Jupiter conjunction Venus 40 Chiron square Lilith 40 Chiron trine Jupiter 40 Mercury sextile Uranus 40 Chiron trine Lilith 40 Midheaven square Venus 40 Pluto opposition Saturn 40 Mars quincunx Moon 40 Mars quincunx Sun 30 Lilith sextile Mercury 30 Jupiter sextile Uranus 30 Ascendant sextile Node 30 Pluto trine Uranus 30 Midheaven square Sun 30 Juno square Node 30 Juno sextile Node 30 Jupiter opposition Sun 30 Juno sextile Sun 30 Jupiter trine Moon 30 Chiron trine Neptune 30 Juno sextile Moon 30 Mercury sextile Node 30 Neptune sextile Node 30 Ascendant sextile Uranus 30 Saturn sextile Uranus 30 Jupiter opposition Venus 30 Chiron trine Mercury 30 Moon opposition Neptune 30 Jupiter sextile Lilith 30 Juno square Jupiter 30 Ascendant square Juno 30 Saturn trine Vertex 30 Saturn square Vertex 30 Juno trine Mercury 20 Jupiter conjunction Saturn 20 Moon quincunx Saturn 20 Ascendant square Vertex 20 Lilith square Vertex 20 Lilith opposition Moon 20 Sun opposition Uranus 20 Chiron square Neptune 20 Midheaven trine Sun 20 Juno trine Neptune 20 Ascendant sextile Juno 20 Chiron trine Juno 20 Moon opposition Node 20 Juno sextile Pluto 20 Chiron opposition Saturn 20 Mercury conjunction Sun 10 Mercury opposition Sun 10 Ascendant opposition Uranus 10 Mars quincunx Pluto 10 Neptune sextile Saturn 0 Saturn conjunction Venus 0 Chiron quincunx Node 0 Moon conjunction Uranus 0 Ascendant quincunx Sun 0 Jupiter conjunction Node 0 Jupiter opposition Uranus 0 Jupiter quincunx Moon 0 Ascendant quincunx Mars 0 Lilith sextile Saturn 0 Node quincunx Venus 0 Node quincunx Pluto 0 Chiron quincunx Moon 0 Ascendant quincunx Moon 0 Jupiter sextile Saturn 0 Mercury opposition Uranus 0 Juno quincunx Jupiter 0 Chiron quincunx Venus 0 Saturn quincunx Sun 0 Chiron quincunx Pluto 0 Sun conjunction Uranus 0 Node quincunx Saturn 0 Pluto opposition Uranus 0 Ascendant quincunx Venus 0 Lilith quincunx Venus 0 Pluto conjunction Uranus 0 Jupiter quincunx Saturn 0 Chiron quincunx Uranus 0

Cite this page

AstroHot. “Synastry Aspects: All 382, With the Odds of Each.” Accessed October 31, 2026. https://astrohot.com/synastry/aspects/

For Wikipedia {{cite web |title=Synastry Aspects: All 382, With the Odds of Each |url=https://astrohot.com/synastry/aspects/ |website=AstroHot |access-date=2026-10-31}}