Sesquiquadrate aspect in the birth chart
A sesquiquadrate is a hard aspect between planets separated by 135 degrees, with an orb of 2 degrees either side. In this symbolic language, it can describe tension between two planetary themes. That friction may call for effort and can support growth, but it does not predict events or prove how a person will act.
The Sesquiquadrate at a glance
- Symbol
- Sesquiquadrate
- Exact angle
- 135°
- Orb allowed
- ±2°
- Counted from
- 133° to 137°
- Nature
- Hard
A measured, uneven angle
The sesquiquadrate spans three eighths of the circle: a right angle plus half a right angle. It belongs to the eighth harmonic and places the planets four and a half signs apart. That halfway sign distance gives the contact an uneven geometry, distinct from the direct alignment of planets in neighboring or opposite signs.
It is a minor aspect, also called the sesquisquare, built from the square. In the signs, that means the relationship carries a square-like tension without making the planets exactly square. The shape helps explain why this contact is classed as hard: its themes may press against each other, while the smaller, offset angle gives the strain a less direct quality.
Tension between two themes
In ordinary life, a sesquiquadrate can feel like two concerns repeatedly interrupting one another. One planet's needs may complicate how the other is expressed, creating irritation or extra effort. For example, a Sun–Saturn contact may set the wish to shine or pursue a purpose against limits, responsibility, and patience. The symbolism describes a possible source of friction, not an outcome or a fixed trait.
With Moon and Uranus, the need for comfort and familiar habits may rub against independence, surprise, or change. Mercury and Mars can link the way a person thinks or speaks with drive, anger, and direct action, so quick words may feel hard to hold back. These examples show how the planetary themes meet; they do not claim that a particular event or behavior must follow.
Reading the orb carefully
To spot a sesquiquadrate, compare the zodiac positions of two planets. Their separation needs to be close to 135 degrees, within an orb of 2 degrees on either side. A tight orb means the measured distance is close to the exact angle, so the contact tends to be read more strongly. A wider orb, still within the allowance, tends to make it less prominent.
The orb describes closeness to the angle, not how difficult a person's life is. This hard aspect does not mean conflict must appear in a visible event, that the planets cancel each other out, or that growth is assured. It offers a symbolic way to consider tension between two themes; the rest of a chart and a person's own experience matter to any interpretation.
Questions
How far apart are planets in a sesquiquadrate?
They are 135 degrees apart, allowing an orb of 2 degrees either side. To check a pair, compare their zodiac positions and see whether their separation falls within that range. The sesquiquadrate's geometry is three eighths of the circle, or four and a half signs apart.
Why is the sesquiquadrate considered a hard aspect?
It is considered hard because the planetary themes can pull against each other and create friction or tension. Its angle is built from the square, though it is a minor aspect with a less direct, halfway sign relationship. The same strain can be associated with effort and growth, but neither is certain.
Is a sesquiquadrate the same as a sesquisquare?
Yes. Sesquisquare is another name for the sesquiquadrate. Both terms refer to the hard, minor aspect formed when two planets are separated by 135 degrees, within an orb of 2 degrees either side. It is described as built from the square.
What does a tight sesquiquadrate orb indicate?
A tight orb means the planets are close to the exact 135-degree angle, so the aspect tends to be read more strongly. A wider orb within the 2-degree allowance tends to be read less strongly. Orb size describes the angle's closeness, not the seriousness of a person's circumstances.
Find the Sesquiquadrate in your chart
Enter your birth details to list the Sesquiquadrate aspects in your chart, each with its orb.
Plate 1. Birth details
Example chart: 15 June 1990, 14:30, London (an invented birth, not a real person)
Plate 2. Chart wheel
Select a planet on the wheel, or a row in a table.
Aspect lines
- Hard: dashed ink
- Flowing: solid blue
- Quincunx: dotted
- Conjunction: planets side by side, no line
Plate 3. Your chart in short
Sun
Gemini
24°11'
Core identity and purpose. In Gemini: curious, talkative, adaptable.
Moon
Pisces
16°11'
Feelings, needs and habits. In Pisces: receptive, imaginative, compassionate.
Rising
Libra
11°14'
How you meet people and start things. In Libra: fair-minded, relational, diplomatic.
Midheaven
Cancer
14°41'
Public role and long-term aims. In Cancer: protective, emotional, nurturing.
Chart ruler: Venus
Taurus
18°51'
Rules your Libra Ascendant; stands in the 8th house
Plate 4. Planets and angles
| Body | Sign | Degree | House | Motion |
|---|---|---|---|---|
| Gemini | 24°11' | 9 | Direct | |
| Pisces | 16°11' | 5 | Direct | |
| Gemini | 5°48' | 8 | Direct | |
| Taurus | 18°51' | 8 | Direct | |
| Aries | 11°05' | 6 | Direct | |
| Cancer | 15°54' | 10 | Direct | |
| Capricorn | 24°01' | 4 | Retrograde | |
| Capricorn | 8°10' | 3 | Retrograde | |
| Capricorn | 13°43' | 3 | Retrograde | |
| Scorpio | 15°24' | 2 | Retrograde | |
| Aquarius | 8°13' | 4 | Direct | |
| Libra | 11°14' | — | — | |
| Cancer | 14°41' | — | — |
Plate 5. Houses
House system used: Placidus.
| House | Cusp sign | Cusp | Planets in it |
|---|---|---|---|
| 1House | Libra | 11°14' | none |
| 2House | Scorpio | 6°25' | Pluto |
| 3House | Sagittarius | 7°46' | UranusNeptune |
| 4House | Capricorn | 14°41' | SaturnNorth Node |
| 5House | Aquarius | 20°01' | Moon |
| 6House | Pisces | 18°47' | Mars |
| 7House | Aries | 11°14' | none |
| 8House | Taurus | 6°25' | MercuryVenus |
| 9House | Gemini | 7°46' | Sun |
| 10House | Cancer | 14°41' | Jupiter |
| 11House | Leo | 20°01' | none |
| 12House | Virgo | 18°47' | none |
Plate 6. Aspects
The ten tightest aspects between planets and the North Node, closest first. The orb is how far each is from exact.
| Pair | Aspect | Orb | Type |
|---|---|---|---|
| Sun · Saturn | Quincunx | 0°10' | Neutral |
| Moon · Jupiter | Trine | 0°17' | Flowing |
| Jupiter · Pluto | Trine | 0°29' | Flowing |
| Moon · Pluto | Trine | 0°46' | Flowing |
| Neptune · Pluto | Sextile | 1°41' | Flowing |
| Jupiter · Neptune | Opposition | 2°11' | Hard |
| Mercury · Uranus | Quincunx | 2°22' | Neutral |
| Mercury · North Node | Trine | 2°25' | Flowing |
| Moon · Neptune | Sextile | 2°28' | Flowing |
| Mars · Neptune | Square | 2°38' | Hard |
To the Ascendant and the Midheaven
| Pair | Aspect | Orb | Type |
|---|---|---|---|
| Mars · Ascendant | Opposition | 0°09' | Hard |
| Pluto · Midheaven | Trine | 0°43' | Flowing |
| Neptune · Midheaven | Opposition | 0°58' | Hard |
| Jupiter · Midheaven | Conjunction | 1°12' | Neutral |
| Moon · Midheaven | Trine | 1°29' | Flowing |
| Neptune · Ascendant | Square | 2°29' | Hard |
| North Node · Ascendant | Trine | 3°01' | Flowing |
| Uranus · Ascendant | Square | 3°04' | Hard |
| Mars · Midheaven | Square | 3°36' | Hard |
| Venus · Midheaven | Sextile | 4°10' | Flowing |
| Jupiter · Ascendant | Square | 4°39' | Hard |
| Mercury · Ascendant | Trine | 5°26' | Flowing |
| Uranus · Midheaven | Opposition | 6°31' | Hard |
Orbs: conjunction, opposition, trine and square 8°, sextile 6°, quincunx 3°.
Plate 7. Balance
Elements
- Fire1
- Earth4
- Air3
- Water3
Modalities
- Cardinal6
- Fixed2
- Mutable3
Counts of the ten planets and, with a birth time, the Ascendant, by the sign each stands in.
Plate 8. Your chart in plain words
Short readings for each placement, most important first. They state traditional meanings and are not predictions.
Sun in Gemini
Curiosity is often central to how you build a sense of self and find what you want to shine at. You may feel most alive when learning or sharing ideas, but restlessness can make it hard to settle on one focus.
Moon in Pisces
You may absorb the mood around you, with imagination and compassion shaping what feels comforting. Quiet time can help you notice your own needs, though unclear boundaries may make it harder to tell them apart from others’.
Ascendant in Libra
A diplomatic, fair-minded manner tends to guide how you meet people and size up a new setting. You may look for common ground, but hesitation can make it harder to show what you prefer at the outset.
Venus in Taurus (chart ruler)
What you value is often expressed through steady affection and a taste for comfort, quality, and familiar pleasures. You may enjoy taking your time, though holding too tightly to what feels secure can limit change.
Mercury in Gemini
Following a question can lead you quickly to another, as Mercury describes a curious, adaptable way of thinking and sharing information. You may enjoy lively conversations, but keeping your attention on one topic can take effort.
Mars in Aries
Your drive tends to move quickly from wanting to doing, and Mars is often read as bold, direct action. You may enjoy a clear challenge, yet impatience can make it harder to stay with slower steps.
Moon trine Jupiter
Your need for comfort tends to support generosity, belief and a search for meaning. You may find warmth in sharing what you care about, though an easy sense of plenty can make it harder to spot your limits.
Jupiter trine Pluto
A drive to grow can work well with a strong instinct for deep change. You may pursue meaning with focus and generosity, though the ease of going all in can make restraint take extra effort.