Learn astrology · Placements · Planet in sign
Mercury in Sagittarius
Sagittarius · Fire · Mutable
Tap a layer to see what each part of the placement row teaches.
Mercury in Sagittarius is a placement row in two layers: the planet names what is acting, and the sign names how that function tends to express itself.
What the planet names
Mercury maps thinking, speaking, sorting, and connecting information. It describes how the mind moves: curiosity, language, and the exchange of ideas.
How the sign colors expression
Sagittarius tends toward exploration, belief, humor, and wide horizons.
Sign tone in context
In Mercury in Sagittarius, the fire mutable tone of Sagittarius qualifies Mercury's core themes rather than replacing them. Ruler Jupiter adds another thread you can trace through aspects and house placement on a full chart.
On your chart
This page describes the sign layer only. Where Mercury in Sagittarius shows up in daily life depends on the house — and houses require birth time. Read the house on your chart only when time confidence supports it.
On your Horaeum chart, find Mercury in the placements table, read the sign and degree, then open the receipt to see which house system and time-confidence setting produced the result.
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