(1) Astrologically, the motion of a body toward a position in the horoscope other than the one it held at birth. (2) Astronomically, the angle at which the orbit of a planet crosses another orbit, particularly the ecliptic. A point in an orbit is reduced to the ecliptic by subtracting from the vector, the cosine of the declination.
The inclination of the Moon's orbit to the ecliptic varies from 4°59' to 5°18'.
The Earth's orbit is, of course, the Ecliptic, hence the Sun can have no latitude. That it has declination is due to the fact that the ecliptic makes an angle with the celestial equator of approx. 23°5' - which is described, not as inclination but as the obliquity of the ecliptic. For the inclination of the planets v. Nodes of the Planets.
