Planets in their own signs (dignity) are strongest and purest and seek one another out as kings seek kings or presidents seek presidents. There are twelve such positions and are found in the charts of highly gifted or powerful individuals. They are:
Sun in Leo, Moon in Cancer, Mercury in Gemini, Venus in Taurus, Mars in Aries, Jupiter in Sagittarius, Saturn in Capricorn, Uranus in Aquarius, Neptune in Pisces, Pluto in Scorpio, Earth/Ascendant in Libra, and an as yet undetermined body or planet in Virgo.
Next in power are planets in their opposite signs, trine signs, square, sextile, and in conjunct or semi-sextile, and they too will primarily seek one another out within their own group or level.
Sun in Aquarius, for example, is an opposition placement (the planet and sign are opposing in quality) and will primarily seek out other opposition placements, such as Mars in Libra, Venus in Scorpio, Uranus in Leo(mutual reception), and so on.
In this way every one of the 144 planetary placements in astrology (12 planets x 12 signs) will have eleven other placements that are of primary importance to them. These placements can be grouped as follows...(select any planetary placement within any group below and see which other placements are most closely associated with it).
Example: the most important or significant placements for a Sun in Leo are Moon in Cancer, Mercury in Gemini, etc. For a Pluto in Scorpio they will be of the same group (Sun in Leo, Moon in Cancer, etc.)