2027 Forecast

Synastry aspect · 90° · orb 8°

Sun Square Vertex Synastry

Sun square Vertex in synastry means one partner's Sun sits about 90° from the other's Vertex (orb ±8°), an angle read as friction. It turns up in 8.9% of couples born within five years of each other.

Each side on its own first: Sun in a birth chart and birth chart calculator.

In couples
8.9% about 1 in 11
Either way round
16.99% both ways: 0.81%
Angle
90° 3 signs apart · orb ±8°
Birth time
±30 min before it breaks

Simulation of 3 million couples, NASA JPL DE440.

The same aspect with one of these planets: Chiron square Sun, Moon square Sun, Lilith square Sun, Midheaven square Sun, Node square Vertex, Saturn square Vertex, Moon square Vertex and Ascendant square Vertex.

Sun Square Vertex Synastry: Meaning and How Common It Is

Checked against chance

How common is Sun square Vertex in synastry?

Sun square Vertex, counted three ways
Sun square Vertex, counted three ways Sun square Vertex, counted three ways: Couples ≤ 5 yrs apart 8.9%, Any two people, 1940–2010 8.89%, Planets spread evenly 8.89%. Couples ≤ 5 yrs apartCouples ≤ 5 yrs apart: 8.9%8.9%Any two people, 1940–2010Any two people, 1940–2010: 8.89%8.89%Planets spread evenlyPlanets spread evenly: 8.89%8.89%Source: AstroHot simulation, 3 million pairs, NASA JPL DE440astrohot.com Couples ≤ 5 yrs apartCouples ≤ 5 yrs apart: 8.9%8.9%Any two people, 1940–2010Any two people, 1940–2010: 8.89%8.89%Planets spread evenlyPlanets spread evenly: 8.89%8.89%Source: AstroHot simulation, 3 million pairs, NASA JPL DE440astrohot.com

Born the same year or 39 years apart, couples land between 8.79% and 8.98%.

How the odds are calculated →

By sign

Which signs make Sun square Vertex

Sign pairs that make Sun square Vertex (shaded)
Sign pairs that make Sun square Vertex (shaded) Sun in Aries: Vertex in Cancer or Capricorn; Sun in Taurus: Vertex in Leo or Aquarius; Sun in Gemini: Vertex in Virgo or Pisces; Sun in Cancer: Vertex in Aries or Libra; Sun in Leo: Vertex in Taurus or Scorpio; Sun in Virgo: Vertex in Gemini or Sagittarius; Sun in Libra: Vertex in Cancer or Capricorn; Sun in Scorpio: Vertex in Leo or Aquarius; Sun in Sagittarius: Vertex in Virgo or Pisces; Sun in Capricorn: Vertex in Aries or Libra; Sun in Aquarius: Vertex in Taurus or Scorpio; Sun in Pisces: Vertex in Gemini or Sagittarius. Vertex’s sign →Sun’s sign →AriTauGemCanLeoVirLibScoSagCapAquPisAriSun in Aries, Vertex in AriesSun in Aries, Vertex in TaurusSun in Aries, Vertex in GeminiSun in Aries, Vertex in Cancer — forms itSun in Aries, Vertex in LeoSun in Aries, Vertex in VirgoSun in Aries, Vertex in LibraSun in Aries, Vertex in ScorpioSun in Aries, Vertex in SagittariusSun in Aries, Vertex in Capricorn — forms itSun in Aries, Vertex in AquariusSun in Aries, Vertex in PiscesTauSun in Taurus, Vertex in AriesSun in Taurus, Vertex in TaurusSun in Taurus, Vertex in GeminiSun in Taurus, Vertex in CancerSun in Taurus, Vertex in Leo — forms itSun in Taurus, Vertex in VirgoSun in Taurus, Vertex in LibraSun in Taurus, Vertex in ScorpioSun in Taurus, Vertex in SagittariusSun in Taurus, Vertex in CapricornSun in Taurus, Vertex in Aquarius — forms itSun in Taurus, Vertex in PiscesGemSun in Gemini, Vertex in AriesSun in Gemini, Vertex in TaurusSun in Gemini, Vertex in GeminiSun in Gemini, Vertex in CancerSun in Gemini, Vertex in LeoSun in Gemini, Vertex in Virgo — forms itSun in Gemini, Vertex in LibraSun in Gemini, Vertex in ScorpioSun in Gemini, Vertex in SagittariusSun in Gemini, Vertex in CapricornSun in Gemini, Vertex in AquariusSun in Gemini, Vertex in Pisces — forms itCanSun in Cancer, Vertex in Aries — forms itSun in Cancer, Vertex in TaurusSun in Cancer, Vertex in GeminiSun in Cancer, Vertex in CancerSun in Cancer, Vertex in LeoSun in Cancer, Vertex in VirgoSun in Cancer, Vertex in Libra — forms itSun in Cancer, Vertex in ScorpioSun in Cancer, Vertex in SagittariusSun in Cancer, Vertex in CapricornSun in Cancer, Vertex in AquariusSun in Cancer, Vertex in PiscesLeoSun in Leo, Vertex in AriesSun in Leo, Vertex in Taurus — forms itSun in Leo, Vertex in GeminiSun in Leo, Vertex in CancerSun in Leo, Vertex in LeoSun in Leo, Vertex in VirgoSun in Leo, Vertex in LibraSun in Leo, Vertex in Scorpio — forms itSun in Leo, Vertex in SagittariusSun in Leo, Vertex in CapricornSun in Leo, Vertex in AquariusSun in Leo, Vertex in PiscesVirSun in Virgo, Vertex in AriesSun in Virgo, Vertex in TaurusSun in Virgo, Vertex in Gemini — forms itSun in Virgo, Vertex in CancerSun in Virgo, Vertex in LeoSun in Virgo, Vertex in VirgoSun in Virgo, Vertex in LibraSun in Virgo, Vertex in ScorpioSun in Virgo, Vertex in Sagittarius — forms itSun in Virgo, Vertex in CapricornSun in Virgo, Vertex in AquariusSun in Virgo, Vertex in PiscesLibSun in Libra, Vertex in AriesSun in Libra, Vertex in TaurusSun in Libra, Vertex in GeminiSun in Libra, Vertex in Cancer — forms itSun in Libra, Vertex in LeoSun in Libra, Vertex in VirgoSun in Libra, Vertex in LibraSun in Libra, Vertex in ScorpioSun in Libra, Vertex in SagittariusSun in Libra, Vertex in Capricorn — forms itSun in Libra, Vertex in AquariusSun in Libra, Vertex in PiscesScoSun in Scorpio, Vertex in AriesSun in Scorpio, Vertex in TaurusSun in Scorpio, Vertex in GeminiSun in Scorpio, Vertex in CancerSun in Scorpio, Vertex in Leo — forms itSun in Scorpio, Vertex in VirgoSun in Scorpio, Vertex in LibraSun in Scorpio, Vertex in ScorpioSun in Scorpio, Vertex in SagittariusSun in Scorpio, Vertex in CapricornSun in Scorpio, Vertex in Aquarius — forms itSun in Scorpio, Vertex in PiscesSagSun in Sagittarius, Vertex in AriesSun in Sagittarius, Vertex in TaurusSun in Sagittarius, Vertex in GeminiSun in Sagittarius, Vertex in CancerSun in Sagittarius, Vertex in LeoSun in Sagittarius, Vertex in Virgo — forms itSun in Sagittarius, Vertex in LibraSun in Sagittarius, Vertex in ScorpioSun in Sagittarius, Vertex in SagittariusSun in Sagittarius, Vertex in CapricornSun in Sagittarius, Vertex in AquariusSun in Sagittarius, Vertex in Pisces — forms itCapSun in Capricorn, Vertex in Aries — forms itSun in Capricorn, Vertex in TaurusSun in Capricorn, Vertex in GeminiSun in Capricorn, Vertex in CancerSun in Capricorn, Vertex in LeoSun in Capricorn, Vertex in VirgoSun in Capricorn, Vertex in Libra — forms itSun in Capricorn, Vertex in ScorpioSun in Capricorn, Vertex in SagittariusSun in Capricorn, Vertex in CapricornSun in Capricorn, Vertex in AquariusSun in Capricorn, Vertex in PiscesAquSun in Aquarius, Vertex in AriesSun in Aquarius, Vertex in Taurus — forms itSun in Aquarius, Vertex in GeminiSun in Aquarius, Vertex in CancerSun in Aquarius, Vertex in LeoSun in Aquarius, Vertex in VirgoSun in Aquarius, Vertex in LibraSun in Aquarius, Vertex in Scorpio — forms itSun in Aquarius, Vertex in SagittariusSun in Aquarius, Vertex in CapricornSun in Aquarius, Vertex in AquariusSun in Aquarius, Vertex in PiscesPisSun in Pisces, Vertex in AriesSun in Pisces, Vertex in TaurusSun in Pisces, Vertex in Gemini — forms itSun in Pisces, Vertex in CancerSun in Pisces, Vertex in LeoSun in Pisces, Vertex in VirgoSun in Pisces, Vertex in LibraSun in Pisces, Vertex in ScorpioSun in Pisces, Vertex in Sagittarius — forms itSun in Pisces, Vertex in CapricornSun in Pisces, Vertex in AquariusSun in Pisces, Vertex in PiscesSource: tropical zodiac, counted by signastrohot.com

To check it by degree: the Sun at 10° Virgo makes the square with the Vertex anywhere from 2° to 18° of Gemini or Sagittarius — the 90° angle give or take 8°. The grid goes by sign, but the square also forms across a sign line: the Sun at 1° Virgo and the Vertex at 29° Scorpio are 88° apart, a sextile by sign.

Between two people

What does Sun square Vertex mean in synastry?

A significant meeting that brings upheaval alongside recognition. The encounter often changes the Vertex person's life, but not smoothly — the timing is awkward or the change is bigger than expected. The Vertex needs an exact birth time.

The usual mistake

Where does Sun square Vertex usually go wrong?

The upheaval is excused as destiny instead of judged on its merits.

Over time

How Sun square Vertex plays out over time

  1. Early on. A meeting that upends one person's life at an awkward time.
  2. Under pressure. The upheaval the meeting causes gets excused as destiny rather than weighed.
  3. Years in. Couples who stay together slowly stop telling the story of how fated it was and start describing what they actually enjoy.

If the birth time is wrong

This aspect survives about 30 minutes of birth-time error

15° an hour for the Vertex, the faster point.
8° orb either side of 90°.
Fragile Needs an exact birth time.

How far a wrong birth time moves the ascendant and houses →

Sun and Vertex at other angles

At any angle: The Sun meets the Vertex, the point of fated encounters. The Sun person often feels like someone the other was meant to meet.

The square among the Sun–Vertex angles, % of couples
The square among the Sun–Vertex angles, % of couples The square among the Sun–Vertex angles, % of couples: Square 90° 8.9%, Trine 120° 8.89%. Square 90°Square 90°: 8.9%8.9%Trine 120°Trine 120°: 8.89%8.89%Source: AstroHot simulation, 3 million pairs, NASA JPL DE440astrohot.com Square 90°Square 90°: 8.9%8.9%Trine 120°Trine 120°: 8.89%8.89%Source: AstroHot simulation, 3 million pairs, NASA JPL DE440astrohot.com
Trine 120° · 8.89% of couples

Next to Sun square Vertex in our list of 382, which runs from the most asked-about down.

Juno trine Mars 120° · 8.74% of couples Mercury opposition Pluto 180° · 4.12% of couples Mars sextile Saturn 60° · 6.28% of couples Jupiter square Uranus 90° · 9.47% of couples

Cite this page

AstroHot. “Sun Square Vertex Synastry: Meaning and How Common It Is.” Accessed October 28, 2026. https://astrohot.com/synastry/aspects/sun-square-vertex/

For Wikipedia {{cite web |title=Sun Square Vertex Synastry: Meaning and How Common It Is |url=https://astrohot.com/synastry/aspects/sun-square-vertex/ |website=AstroHot |access-date=2026-10-28}}