φ ------ The geographic latitude of the observation point and the sub-arc φ = 90 ° between the sky
δ ------ Kingwei
α ------ red
T ------ The angular angle of the celestial body is in two different ground points, the difference between the time of the same physical instant measured, at the value equal to the physical tight of the two points difference
s ------- S = α T during the star
H ------- The horizontal latitude of the celestial body or the height
Z ------- Top distance H Z = 90 °
A ------- azimuth
The first law of Cople: The track of all confidence is an ellipse, and the star is located on a focus of the ellipse.
Cople Second Law: The fan area drawn by the planet is proportional to the required time.
Copple Third Law: The square of the planetary rotation cycle is proportional to the cube of the long radius of the track.
Mobility: Each planet's impact on the remaining planet is relatively small, it is just a slight change of the basic movement of the remaining planet (or Coppler sports)
The intersection of the Huangdao and the equator is the spring points and autumn points.
