Graha

Graha is Sanskrit for "planet," but the Vedic system of nine Grahas includes two entries that are not physical celestial bodies at all: Rahu and Ketu, the lunar nodes — the two mathematical points where the Moon's orbital path crosses the ecliptic (the Sun's apparent path), always exactly opposite each other. The full list of nine Grahas is: Sun (Surya), Moon (Chandra), Mars (Mangal or Kuja), Mercury (Budha), Jupiter (Guru), Venus (Shukra), Saturn (Shani), Rahu, and Ketu.

Each Graha is treated as a karaka — a significator — of particular life areas: the Sun for identity, authority, and vitality; the Moon for mind and emotion; Mars for drive, courage, and conflict; Mercury for intellect and communication; Jupiter for wisdom, expansion, and fortune; Venus for relationships, beauty, and comfort; Saturn for discipline, structure, and delay; and Rahu and Ketu for, respectively, worldly desire and ambition, and detachment or spiritual inclination. These significations combine with a Graha's house and sign placement to produce a specific reading. The mantra remedies and dana remedies articles show how the classical tradition works with each one.

Each of the seven visible Grahas rules one or two signs: the Sun rules Leo and the Moon rules Cancer; Mars rules Aries and Scorpio; Mercury rules Gemini and Virgo; Jupiter rules Sagittarius and Pisces; Venus rules Taurus and Libra; Saturn rules Capricorn and Aquarius. In the standard scheme Rahu and Ketu rule no sign. Each Graha also has a sign of exaltation and, opposite it, a sign of debilitation: the Sun is exalted in Aries, the Moon in Taurus, Mars in Capricorn, Mercury in Virgo, Jupiter in Cancer, Venus in Pisces and Saturn in Libra. These rulerships are what make one planet the lord of different houses for different Lagnas.

Classical texts group some Grahas as generally benefic (Jupiter, Venus, a well-placed Mercury and Moon) and others as generally malefic (Saturn, Mars, Rahu, Ketu, a poorly-placed Sun), but these are starting tendencies rather than fixed verdicts. A Graha's actual effect in a specific chart depends heavily on which house it rules, which house and sign it occupies, its dignity (exalted, debilitated, or in its own sign), and what aspects it receives — a classically "malefic" planet can produce very favourable results when well placed, and vice versa.

The nine Grahas are also the nine rulers of the Vimshottari Dasha sequence, which is why understanding a Graha's general signification matters for reading a Mahadasha or Antardasha, not just a static placement. In practice, no single Graha is read in isolation — its placement is always considered together with its house lordship, aspects from other Grahas, and its role (if any) in a classical Yoga. You can see where every Graha sits in your own chart, with its sign, degree and house, in the Lagna calculator.