Cradle Pattern Calculator — The Opposition Rocked by Support

What the cradle pattern is

A cradle takes four planets and six links. Exactly one link is an opposition; three are sextiles (60°); two are trines (120°). Every one of them must fall inside orb at once, or the figure does not count.

The structure to see is a central opposition with two supporting bodies arranged beside it. Each supporter makes a sextile to one end of the opposition and a trine to the other, and the two supporters sextile each other. That is why the old description sticks: the opposition is the baby, and the sextiles are the rockers.

The cradle is also honestly described as half a mystic rectangle. A mystic rectangle is two oppositions bridged by support; remove one opposition and its partners, and what remains is a cradle. Same shock absorbers, half the voltage.

How we detect it

Positions come from sub-arcsecond astronomy (VSOP87/ELP via astronomy-engine). Each pair of bodies is classified by its nearest aspect — sextile and trine at 6° orb, opposition at 8° — and then every four-body combination is tested against the cradle's exact link multiset: one opposition, three sextiles, two trines.

Detection is deterministic and exhaustive: we do not stop at the first cradle, because a chart can hold more than one. Each instance is reported with its own widest link.

The nested shapes come free. Every cradle contains exactly two minor grand trines — trine plus two sextiles — and our probe asserts that bookkeeping on a synthetic cradle, so the sub-figures your report shows are not an accident of the search order.

What the report returns

For every cradle in your chart, the tool prints:

• The four bodies with their exact degrees-in-sign, sign and house.
• The widest link in the figure — the cradle's tightness in one number.
• Which pair carries the opposition, and which bodies supply the sextile support.
• Nested minor grand trines as separate findings, listed beside the cradle.
• A none statement when no cradle closes — most charts genuinely hold none.

A worked example: a generation-shallow cradle, 21 July 2026

Cast London at midnight UT on 21 July 2026. Four slow bodies sit almost exactly one sign apart: Neptune at 4.37° Aries, Uranus at 4.61° Gemini, Jupiter at 4.53° Leo, Pluto at 4.43° Aquarius.

The opposition is Jupiter to Pluto, just 0.10° off exact. Neptune and Uranus are the supporters: Neptune trines Jupiter and sextiles Pluto; Uranus sextiles Jupiter and trines Pluto; and the two supporters sextile each other. Every one of the six links falls inside 0.25°.

The widest leg is the Neptune–Uranus sextile at 0.24°, so the tool prints the whole figure at 0.24° — an unusually exact cradle.

Inside it ride two minor grand trines: Neptune–Uranus–Jupiter and Neptune–Uranus–Pluto. Our automated probe asserts this chart's cradle and its tightness, so the numbers above are reproducible.

Reading a cradle in your chart

Start at the opposition. Two planets disagree about direction — that is the raw material of the figure, and with outer planets it is usually generational weather rather than personal fate.

Then look at who supports it. The two sextile-and-trine bodies describe the resources you bring to the tension: the sextiles show skills that connect readily to each end, the trines show a natural fluency with the far side. A cradle with personal bodies as supporters reads very differently from one held up entirely by outer planets.

The traditional tone is protective. Where a T-square demands work from its apex, a cradle already has the handles built in: the tension is real, but so is the flowing support around it. The warning that travels with cradles is comfort — support that always arrives can discourage you from developing anything else.

Finally read the nested minor grand trines as the figure's easy interior: two overlapping circuits of talent, each one trine-and-two-sextiles, running through the same four bodies.

What this tool does not claim

The name and the shape are conventions of modern pattern astrology, not measurements. The interpretation is one school's lens over real geometry.

Orb tables decide the census. Under our published orbs, our 80-year sweep — 2,922 charts cast every ten days from 1950 to 2030 — closed 403 cradles. Wider orbs would collect more marginal ones; tighter tables would drop exact-looking figures that fail on a single leg.

Because cradles love slow planets, many natal cradles are generational: everyone born in the same few years shares the outer-planet scaffolding. The personal question is which of the four bodies are yours to switch on — your Sun, Moon, Mercury, Venus or Mars, or bodies in angle houses.

Our method in one line

Positions from sub-arcsecond astronomy (VSOP87/ELP via astronomy-engine), read through Porphyry quadrant houses (whole-sign available on every chart). The cradle matcher is a fixed six-link multiset test asserted by our automated probe (Batch F), including the worked chart above, the nested-count bookkeeping and the census figure. Reviewed by Dr. Amara Osei, Astronomy Reviewer.