Amedeo Avogadro

Physicist and university teacher · Italy · 1776–1856

Leo 17.3° · born August 9, 1776
Birth time unknown

Birth date sourced. Birth time unknown.The Moon remained in Gemini throughout that civil day. Everything below uses only what the complete civil day settles.

The day, read honestly

The Sun stands at 17.3° Leo, in domicile — the planet in its own sign, running on home rules. Of everything the chart can be read for without a birth time, that is the loudest single fact in it.

Positions at 12:00 civil time in Turin—a reference instant, not a birth time. No houses, rising sign, angles, or sect were computed.

Where the Sun actually stood

The Sun's exact place is 17.3° Leo. That falls in the second decan, 10°–20°, sub-ruled by Jupiter in the classical scheme — a fire sign read through a fixed season.

The fast planets

Mercury holds 1.3° Leo, Venus holds 16.9° Leo, Mars holds 15.1° Cancer — in the old shorthand, a mind that decides at speaking speed; taste that runs toward the vivid and the immediate; drive that moves on certainty and current.

The angles that hold

Nothing in the geometry sits closer than Venus and Saturn: 0.0° from an exact sextile. Sextiles are read as standing invitations — productive exactly as often as they are accepted. Behind it, the Sun conjunction Venus at 0.5°, and the Sun sextile Saturn at 0.5° — both still well inside the orbs this site uses. These angles were checked through every hour of that civil day and survive throughout, which is why an unrecorded hour does not disturb them.

The standing structure

The day-stable angles form no closed figure. Nothing funnels; each aspect is its own negotiation, which the tradition reads as a chart of separate treaties rather than one campaign.

The classical map

Of the seven planets the classical scheme judges, four sit in a sign it has an opinion about. The Sun in Leo at 17.3° is in domicile — the planet in its own sign, running on home rules; Mars in Cancer at 15.1° is in fall — the tradition’s uphill placement, strength earned rather than given; Jupiter in Cancer at 13.7° is in exaltation — the tradition’s honoured-guest placement, working at its best; Saturn in Libra at 16.8° is in exaltation. The old table grades terrain, not talent — a placement in fall works uphill, nothing more.

The shape of the whole

Balance, counted honestly across the 10 placements whose signs hold for the whole day: elements fire 3, air 3, water 2, earth 2; modalities cardinal 4, fixed 3, mutable 3. A fire emphasis is read as appetite for the first move, with information gathered by doing rather than before doing. Pluto was retrograde — the backward drift a body appears to make as the Earth overtakes it, read in the scheme as a function that reviews before it releases.

The Moon, and how far it can move

The Moon stayed in Gemini for the whole of that day at the birthplace, covering 12.9° between midnight and midnight. Fast enough that its degree is approximate, slow enough that its sign is not in doubt. At the noon reference it stands at 22.7°.

Where this comes fromSources, revisions, and exactly what this chart assumes

Source article: Amedeo Avogadro · revision 1356312847
Wikidata: Q43476 · revision 2518163612
Retrieved: 2026-07-26T18:47:50.947Z
Birth date: 1776-08-09 · day precision · proleptic-gregorian
Birthplace: Turin, Italy · Q495
Coordinates: 45.0792, 7.6761 · from Turin
Reference instant: 1776-08-09T11:10:04.000Z · noon civil time, not a birth time
Omitted: Rising sign, houses, angles, and sect—all require a birth time.
Unknown-time range: Moon travelled 12.92° · The Moon remained in Gemini throughout that civil day.
Engine: astronomy-engine (repository dependency) · @zodiacs/engine/internal/math
Portrait: The original uploader was Anton at German Wikipedia. · public domain · Wikimedia Commons

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