← Encyclopedia of Astrology · lesson 140/235
Prominence
What it is
Every chart has the same ten planets, but they do not all speak with the same voice. In one chart Saturn is the planet everything else seems to orbit; in another it sits quietly in a corner. Prominence is the name for that difference: how much a planet stands out in a particular chart, and so how much a reading is likely to lean on it.
It is not the same as a planet's essential dignity, which asks how well a planet can act in its sign. A planet can be prominent and debilitated at once — a Mars in its fall sitting exactly on the Ascendant is hard to miss, whatever its condition.
How astrologers have judged it
The idea is old, and every school has its version.
- The tradition weighed each planet's fortitudes against its debilities. Lilly, judging a question, adds up each planet's essential and accidental testimonies and subtracts the lesser from the greater — Jupiter with 20 fortitudes, Saturn weak by 8. The planet with the most dignity in a chart, the almuten, was deVore's "planet of chief influence in a Nativity"; early modern authors, as Luís Ribeiro shows, chose it by weighing the essential and accidental dignities of every planet.
- The lord of the nativity. deVore records the rule that the ruler of the Ascendant is the chart's lord unless it is poorly placed, when a more elevated or better-aspected planet takes its place. Max Heindel likewise distinguished the rising sign's ruler from the "life ruler", the planet with the most dominant influence, whichever it is.
- Modern practice usually lists the signs of prominence rather than scoring dignity. Donna Cunningham's summary is typical: a planet stands out when it is conjunct or in strong aspect to the Sun, Moon, Ascendant or Midheaven, when several planets or the lights stand in the sign it rules, when it is part of a major configuration, or when it is among the most aspected planets. Steven Forrest calls angular planets "placed on center stage".
Common to all of them: closeness to the angles, close aspects, rulership of the chart's key points, and dignity.
How the weight is worked out here
Each of the ten planets, Sun to Pluto, is given a weight from its birth chart, by adding:
- Angularity — 15 if it lies within 3° of the Ascendant, Midheaven, Descendant or IC; 10 if within 8°.
- Aspects — 2 for each major aspect (conjunction, opposition, trine, square, sextile) to another of the ten planets, plus 3 more when that aspect is within 1°, or 1 more within 3°.
- Rulership — 8 if it rules the rising sign, 5 if it rules the Sun's sign, 5 if it rules the Moon's sign (by the traditional rulers).
- Dignity — 5 in its domicile, 4 in its exaltation; −3 in detriment, −4 in fall.
- House — 4 in an angular house, 2 in a succedent, 1 in a cadent.
- Company — 3 if it belongs to a stellium.
The planets are then ranked, and the highest is the chart's most prominent planet. The ranking is one of the things the structured report uses in deciding what to dwell on — which planet to treat as the chart's focus, for instance, and which retrograde planets are worth naming.
How it is shown here
In the Planets table the Weight column draws each planet's weight as a bar against the strongest planet in that chart. Depending on how scores are set to display, a badge may sit beside it: the number itself, an L / M / H label (low, medium, high), or a 1–10 scale. Labels and scales are always relative to this chart's own planets — an "H" planet is high among its neighbours, not by some universal measure. They are for reading only; nothing is chosen by the badge.
Weight is a property of the birth chart. A transit or progression reading shows the person's natal weights, taken from their most recent birth-chart reading. The lunar nodes, Chiron and Lilith have no weight by design: they hold no dignity and rule no sign, so the measure does not apply to them.
An older layout of the Essential Dignities table has a column headed Score: that is the planet's dignity points in Lilly's scheme, not its weight.
How to read it
A heavy planet is one the chart keeps returning to: its themes tend to colour the whole life, and the reading will usually say more about it. A light planet is not absent or weak in the person — it simply has less of the chart's attention. Prominence describes emphasis, not merit, and it inclines a reading rather than deciding it.