☿ Mercury ⚺ Semisextile ♃ Jupiter
30° · minor aspect · neutral · default orb ±2°
The semisextile of Mercury and Jupiter sets detail beside doctrine in adjacent signs. Tradition assigns Mercury the particulars, speech, accounts, and craft of knowledge, and Jupiter the universals, law, faith, and judgment, and their rulerships formalize the opposition, Gemini and Virgo standing directly across from Sagittarius and Pisces so that each planet is in detriment in the other's homes. At thirty degrees the signs are additionally averse, sharing no element, mode, or polarity, and the pair is read as scholarship and conviction in neighboring but unconnected rooms, the clerk and the judge working different floors.
Traditional reading
Mercury, far the faster body, applies to Jupiter. The mutual-detriment structure gave older authors a ready account of this pair's friction even in strong aspects, the great and the small each dissolving in the other's territory, and aversion at the semisextile removes even that contested contact. The angle itself belongs to the post-classical minor aspects, unknown to the Ptolemaic scheme. Modern practitioners who use it describe incremental negotiation between precision and scope, facts and meaning adjusting to each other in small recurring corrections rather than open dispute.
Classical reading
Adjacent-sign aspect (30°). Classical sources treat it as minor and somewhat dissonant due to lack of shared element or modality.
Modern reading
Modern reading: subtle adjustment. Two principles in adjacent signs requiring small course corrections to integrate.
The two bodies
Other Mercury–Jupiter aspects
More on the Semisextile aspect in general.
Reference, not advice
This is cultural and astronomical reference, not personal prediction or advice.
Last reviewed .