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AT A GLANCE
An opposition is an angular relationship near 180°, placing two chart factors across the zodiac from one another. It is read through polarity, encounter and competing needs. Its usefulness lies in recognizing both sides rather than declaring one planet the problem.
Explore major aspects →
Geometry and orbs #
For example, Venus at 10° Aries and Saturn at 10° Libra form an exact opposition. At 12° Libra, Saturn would be 2° from exactness. The permitted orb varies by school. Opposite signs share a modality but differ in element within complementary Fire–Air or Earth–Water pairs.
Interpreting the relationship #
Read the planetary functions and both houses. A Moon–Mars opposition could frame a tension between emotional comfort and immediate action. The houses suggest the settings in which that tension is considered, and other aspects may offer additional ways of responding.
A practical example #
A person wants a quiet evening while also feeling an urgent need to finish a demanding project. An opposition-style inquiry asks what each need contributes and how to negotiate time for both. It need not mean alternating between total passivity and relentless effort.
What the aspect does not establish #
Oppositions do not establish that relationships are doomed or that other people are projecting something onto you. ‘Projection’ is an interpretive possibility, not access to another person’s psychology. Planets in opposite signs are not necessarily within the same degree-based opposition orb.
See reading a birth chart to place aspects alongside planets, signs and houses.
Sources & editorial notes
Original explanations and hypothetical examples prepared with AI assistance for Synergy. Sources document the traditions described; they do not establish predictive or causal validity.
- Ptolemy, Tetrabiblos, translated by J. M. Ashmand (1822)
Book I, chapter XVI: geometrical configurations of signs. The conjunction is treated as co-presence rather than a separate ray in some traditional approaches.
- Sepharial, Astrology: How to Make and Read Your Own Horoscope (1920 edition)
Section II, The Aspects: angular relationships. The examples here use explicitly stated degree-based orbs.