Pluto
Pluto is the last of the 'modern planets' incorporated into astrology, and also the most astronomically debated. Co-ruler of Scorpio alongside Mars, it's associated with transformation, power and the processes of death and rebirth — both literal and psychological.
Last reviewed: 2026-07-20
Historical fact
Pluto was discovered in 1930 by American astronomer Clyde Tombaugh and held official status as a planet of the solar system for 76 years, until the International Astronomical Union (IAU) reclassified it in 2006 as a 'dwarf planet' — a category created precisely because of the debates its nature had generated. Despite that astronomical reclassification, most Western astrologers have continued using Pluto in their interpretations exactly as before, illustrating a genuine divergence between astronomy, an observational science, and astrology, a symbolic system that is not bound to follow astronomy's formal categories.
Interpretation — Western Astrology (Tropical)
In modern Western astrology, Pluto represents deep transformation, power, the cycles of death and rebirth, and the unconscious — everything that operates in the most hidden layers of the psyche and social structures until it surfaces irreversibly. It is considered co-ruler of Scorpio, a role it took on after its 1930 discovery; the sign's traditional ruler remains Mars, still used alone by classically oriented astrologers. Pluto is linked to crisis, regeneration, obsession, and the exercise (or abuse) of power.
Interpretation — Vedic Astrology (Sidereal)
Like Uranus and Neptune, Pluto is not part of the classical Navagraha system, which comprises the seven classical planets plus Rahu and Ketu. The explanation is the same: Jyotish's foundational texts, such as the Brihat Parashara Hora Shastra, were composed long before Pluto's discovery in 1930, making its presence in the original canon impossible. Some contemporary Vedic astrologers have begun incorporating Pluto as a secondary influence — particularly for themes of power, crisis and deep transformation — but this is a modern adaptation, not a universal or classical practice within the tradition.
This section presents one tradition's interpretation, not a verifiable fact.
Frequently asked questions
- Do astrologers still use Pluto even though astronomy no longer classifies it as a planet?
- Yes. In 2006, the International Astronomical Union reclassified Pluto as a 'dwarf planet,' but most Western astrologers have continued using it in their interpretations exactly as before, since astrology operates as a symbolic system independent of astronomy's formal categories.
- Is Pluto part of the Vedic Navagraha system?
- No. The classical Navagraha system was codified centuries before Pluto's discovery in 1930, so it isn't among Jyotish's nine traditional planets. Some modern Vedic astrologers use it as a secondary influence, but this isn't universal or classical practice.
Sources
- Nicholas Campion. A History of Western Astrology (2009).
- Claudius Ptolemy. Tetrabiblos (c. 150).
- Maharishi Parashara (trans. R. Santhanam). Brihat Parashara Hora Shastra (1984).
- David Pingree. From Astral Omens to Astrology: From Babylon to Bīkāner (1997).