the shadow of a planet.

Equal distance from one side of the equator as from the other side, or from a house cusp. The midpoint of a planet's position and its antiscion is always the point of the solstice (0° Cancer, or Capricorn). See Contrascion.

"Some of the learned in this Art do hold that the Antiscions of the Planets be equivalent unto a Sextile or a Trine-aspect, especially if they were beneficial Planets; and their Contrantiscions to be of the nature of Quadrate or Opposition. How to know the Antiscions is no more than this; first, know the Antiscions of the signs, which is no more but a sign being equally distant with another from Cancer and Capricorn the two Tropicks; as Gemini hath its Antiscion in Cancer, Taurus in Leo, Aries in Virgo, Pisces in Libra, Aquarius in Scorpio, and Capricorn in Sagittary; for when the Sun is in 1° of Gemini, he is as far from the Tropick point of Cancer as when he is in 29° of Cancer; and in the 5° of Taurus, as when the 25° of Leo, &c.... The Contrantiscion is known thus; look in what sign, degree and minute your Antiscion falls, and your contrantiscion will be in the same degree and minute as your opposite sign to your Antiscion. [RA