House 10 begins at the Midheaven (MC), the highest point of the chart. It represents vocation and social standing: ambitions, career, responsibilities, recognition, long-term goals — what one seeks to build facing the world.
A planet in House 10 often influences the direction your professional life takes, or the way you are perceived publicly.
Angular house (with Houses 1, 4, and 7): like the other three angles of the chart, House 10 is judged in classical doctrine among the strongest — a planet at the Midheaven acts with more force and visibility than elsewhere, which often makes it the most closely examined house for matters of career.
Natural sign and ruler: Capricorn, ruler Saturn — consistent with the theme: Capricorn is itself the sign of structure, responsibility, and long-term ambition. See the Capricorn entry.
No planet finds its joy in House 10 in the classical doctrine of the seven planetary joys (see House 1) — a third angle outside this scheme, which only covers 7 of the 12 houses.