In astrology, a planet’s domicile is the zodiac sign over which it has rulership. A planetary ruler is given to each sign, over which the planet has a more powerful influence when positioned therein. A planet is considered to be in domal dignity when it is positioned in the sign it rules. This is the strongest dignity of a planet.
A planet in a sign of a similar nature, but which it does not rule, is said to be in exaltation. The planet gets strength and energy from its exaltation, and thus, its influence is positive.
When a planet is in the sign opposite the sign it rules, it is said to be in detriment. Thus, its action is weakened.
A planet in the sign opposite the sign of its exaltation is said to be in fall. Therefore, contrarily to the exaltation, the planet loses its strength and influence.
Domicile, Exaltation, Detriment and Fall for Each Planet
THE MOON: Domicile in Cancer, exaltation in Taurus, detriment in Capricorn, fall in Scorpio.
MERCURY: Domicile in Gemini and Virgo, exaltation in Aquarius, detriment in Sagittarius and Pisces, fall in Leo.
VENUS: Domicile in Taurus and Libra, exaltation in Pisces, detriment in Scorpio and Aries, fall in Virgo.
MARS: Domicile in Aries and Scorpio, exaltation in Capricorn, detriment in Libra and Taurus, fall in Cancer.
JUPITER: Domicile in Sagittarius and Pisces, exaltation in Cancer, detriment in Gemini and Virgo, fall in Capricorn.
SATURN: Domicile in Capricorn and Aquarius, exaltation in Libra, detriment in Cancer and Leo, fall in Aries.
URANUS: Domicile in Aquarius, exaltation in Scorpio, detriment in Leo, fall in Taurus.
NEPTUNE: Domicile in Pisces, exaltation in Leo and Sagittarius, detriment in Virgo, fall in Gemini and Aquarius
PLUTO: Domicile in Scorpio, exaltation in Aries and Leo, detriment in Taurus, fall in Libra and Aquarius.