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ϕ Phobos – The Harbinger of Fear

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astrology · AstrologyArithetic · Definitions · LunarNodesAndMoons

ϕ Phobos – The Harbinger of Fear

Interpretive Basis

Mythic Root:
Named after the Greek personification of panic and terror, son of Ares (Mars).
Core Function:
Symbolizes urgent reaction and the swift stirring of raw emotions around Mars.
Astrological Role:
In esoteric systems, Phobos indicates where sudden fears or reflexive action emerge.


Orbital Signature

Type: Martian moon
Orbital Period: ~7.6 hours (rapid orbit)
Inclination / Eccentricity: Nearly equatorial, slightly eccentric
Retrograde Motion: None relative to Mars
Discovery Year: 1877


Keywords / Powerwords

Alarm, Speed, Instinct, Reflex, Momentum


House and Aspect Relevance


Use in Astrology Arith(m)etic

Phobos provides data on rapid emotional triggers, supplementing the Martian archetype within the codex.


🔭 Astronomical Data (NASA)

Quantity Value
Designation Mars I — Phobos
Semi-major axis 9,378 km from Mars’ centre
Sidereal orbital period 0.31891 days (7 h 39 m) — shorter than a Martian day, so it rises in the west
Discovery Discovered 1877-08-17/18 by Asaph Hall, U.S. Naval Observatory

As moons of Mars, Phobos and Deimos have no independent geocentric zodiacal motion: in a chart they occupy Mars’ position (within a few arc-seconds). Their use here is symbolic, as satellites of Mars.

Sources (nasa data)