Inferior Planets

Definition

Inferior planets are Mercury and Venus, the two planets whose orbits lie inside Earth’s orbit around the Sun. From Earth, they always appear relatively close to the Sun and can never form every possible angular separation from it. The term is astronomical and traditional; “inferior” describes orbital position, not weakness, value, or harmfulness.

Astrological Meaning

In astrology, Mercury and Venus are interpreted through their signs, houses, aspects, essential dignities, speed, visibility, and relationship to the Sun. Mercury cannot be more than about 28 degrees from the Sun, while Venus remains within roughly 48 degrees. Their limited elongation shapes which aspects they can form with the Sun in a natal chart. Traditional astrologers may also examine whether either planet rises before or sets after the Sun, whether it is retrograde, or whether proximity to the Sun places it under the beams or in combustion. These conditions can modify how readily the planet’s symbolism is expressed.

Why It Matters

Recognizing the inferior planets helps explain recurring chart patterns that are created by astronomy rather than coincidence. Mercury’s closeness to the Sun links thought and communication with identity and purpose, while Venus’s solar relationship connects values, attraction, and harmony with personal direction. Interpretation still depends on the complete chart: neither planet should be judged solely by its distance from the Sun or by the label “inferior.”

Related Encyclopedia Entries

• Traditional Astrology
• Astrological Terminology
• Natal Chart