Minor Grand Trine: One Trine Bridged by Two Sextiles

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A minor grand trine is a three-body figure made of one trine and two sextiles. Two bodies are trine each other, about 120° apart, and a third body sits between them, sextile to both. On the wheel it looks like a flat triangle: one long side and two short ones. The word "minor" refers to the size of the triangle, not to minor aspects. Every leg is a major aspect, so nothing here needs the quincunx or any other aspect the free chart does not calculate. The general checking method is on how to find aspect patterns.

What is checked here: bodies from the Sun to Pluto, plus the Moon and Chiron, measured with the flat orbs of the free birth chart. Sextiles get 6°; conjunctions, squares, trines and oppositions get 8°; a separation exactly on the edge counts. Leaving the Lunar Nodes, the angles and Lilith out of the examples is a teaching choice for this page, not a claim that they can never form such a figure. The chart itself draws one line per aspect. It neither detects nor names a minor grand trine and lists no aspect numbers, so the example below was confirmed by hand from the planet table, with the tick on the inner ring as each body's true place when glyphs are drawn to one side.

Names and the exact definition

You will also see this figure called a small grand trine or a little grand trine. Astrotheme's guide to composed aspects, for example, notes that the trine and the two sextiles inside a kite form a "small grand trine" of their own. That source is cited here for the shape only; its orbs and interpretations are not used. Definitions vary at the edges between sources, so on this page the figure means exactly three legs:

All three are checked separately. A trine plus one sextile is not the figure, and neither is a trine with a third body sextile one end and conjunct the other.

Why the bridge has to sit near the middle

The bridging body lies between the two ends of the trine, so its two sextiles add up to the trine. If the trine is exactly 120°, the sextiles could be 54° and 66°, 60° and 60°, or anything in between, so the bridge can be up to 6° either side of the midpoint. As the trine moves away from exact, that room shrinks. With a trine of 126°, both sextiles have to be between 60° and 66°, so the bridge must be within 3° of the midpoint. At either edge of the trine window, 112° or 128°, only 2° of room is left each way. A body roughly between the two ends of a wide trine often fails one of its sextiles for this reason, and that is the leg to check first.

A worked example

Jonas is a fictional person. His chart is the calculator's output for London on 24 May 1993 at 12:00.

All three legs hold, so Venus, Mercury and Mars form a minor grand trine with Mercury as the bridge. The trine is 5.37° wide, which leaves Mercury about 3.3° of room either side of the midpoint. Mercury sits 2.83° from it, and the Venus-Mercury leg is only 0.49° inside the sextile window. Every leg is in sign: Aries and Leo are four signs apart, and Gemini is two signs from each.

A second combination in the same cluster

Chiron at 18°25' Leo is 5.01° from Mars. It is trine Venus at 119.64° (orb 0.36°) and sextile Mercury at 65.15° (orb 5.15°), so Venus, Mercury and Chiron make a second minor grand trine. Counted as body combinations, Jonas has two. For reading, the two share a bridge and a trine partner, and Mars and Chiron sit together, so it makes sense to treat them as one cluster with Mercury in the middle. This is the same counting habit used across these guides: tally combinations, read clusters.

Reading the three together

Trines are usually read as ease and flow, sextiles as openings that tend to reward a little effort. In a minor grand trine the bridging body is often seen as the place where the easy link gets used. Here Venus in Aries and Mars in Leo give a warm, direct link between what Jonas values and how he goes after it, and Mercury in Gemini sits in the middle of that line. One possible reading is that talk, writing or quick thinking is the route by which that easy confidence turns into something concrete, with Chiron adding a more sensitive note to the Mars end. These are tendencies an astrologer might explore, not a description of his life.

Birth time and a near miss in the same day

Mercury moves quickly, about two degrees a day in this part of 1993, so the Venus-Mercury leg is the time-sensitive one. Running Jonas's date through the calculator at every whole minute from 00:00 to 23:59:

• The Venus-Mercury separation reaches the 54° edge between 02:47 and 02:54. In those minutes the leg flickers in and out, because the calculator works with longitudes rounded to 0.01°, so a value this close to the edge cannot be settled. From 02:54 the sextile holds for the rest of the date.
• The Mercury-Chiron sextile starts at 01:52, and the other legs of both figures hold all day.

A Jonas born at 01:30 on the same date would have the Venus-Mars trine and the Mercury-Mars sextile, but not the Venus-Mercury sextile. Two legs out of three is not the figure. Without a birth time, the free chart uses local noon only as an internal reference and draws no Moon lines; this example has no Moon in it, but it still depends on the time, so a noon chart alone cannot confirm it. The full check across the date is what settles the question.

How it relates to other figures

Grand trine. A grand trine closes the triangle with three trines. In a minor grand trine the third body sits inside the long side rather than at a third corner. A fourth body opposite the bridge would sit roughly trine both ends; if all of its legs are in orb, the minor grand trine has become a kite.

Kite. Every kite contains a minor grand trine: the focal planet and the two members of the grand trine it is sextile to. In the worked example on the kite page, Neptune is sextile Jupiter (57.25°) and Pluto (55.30°), and Jupiter and Pluto are trine (112.55°), which is a minor grand trine inside the kite with an out-of-sign trine as its long side. See out-of-sign aspects for why that leg still counts.

Cradle and larger figures. A cradle contains two overlapping minor grand trines, and a grand sextile contains six. When a chart has a larger figure, list the minor grand trines inside it as part of that figure rather than as separate discoveries.

How often they turned up

Using the same sample as the pattern checking guide, London at 12:00 local clock time on every date from 1 January 1920 to 31 December 2059 (51,135 dates), with the Sun, Mercury through Pluto and Chiron and without the Moon, the calculator's positions at code version 512fc104 gave at least one minor grand trine on 23,671 dates, 46.3% of the sample. Counting body combinations, there were 45,669. On the same dates, a grand trine appeared on 8,026 (15.7%), the figure given on the checking guide.

So the minor grand trine was about three times as common as the grand trine in this sample. These are shares of calendar dates in one sample, not shares of people, and they change with the place, the time of day and the body set. A Moon at a known time adds more chances.

Wheel and table

On the wheel, look for one long line with a body roughly halfway along its outer arc and two short lines to it. In Jonas's chart the Mercury glyph is drawn about 14° from its tick, pushed by the Sun nearby, so the bridge can look off-centre when it is not. Measure from the ticks or the table. The table shows whole minutes truncated from positions rounded to 0.01°; a leg within about a minute of an edge cannot be settled from it, as the 02:47 to 02:54 stretch shows.

To check your own chart, generate your free birth chart and list the trines first, then look between their ends. A specific figure can be discussed with Ask the Astrologist.

Related articles

• Venus Trine Mars
• Mercury Sextile Mars
• Mercury Sextile Venus
• Aspect Patterns in Astrology