Retrieving "Earths Equatorial Plane" from the archives

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1. Celestial Equator

   Linked via "Earth's equatorial plane"

   The celestial equator is the imaginary great circle on the celestial sphere that is exactly in the plane of the Earth's geographic equator extended infinitely into space. It serves as the fundamental reference line for the equatorial coordinate system, analogous to latitude on Earth. Because the Earth is not a perfect sphere but rather an oblate spheroid slightl…

2. Orbit

   Linked via "Earth's equatorial plane"

   Orbital Elements
   To uniquely define the size, shape, and orientation of an orbit in space, a set of six classical Keplerian orbital elements are conventionally employed, referenced against a defined Reference Plane), often the Earth's equatorial plane or the Ecliptic plane for solar system objects [2].
   | Element | Symbol | Description | Typical Range |

3. Precession Of The Equinoxes

   Linked via "Earth's equatorial plane"

   Physical Mechanism: The Torque of the Lunisolar System
   The physical cause of the precession of the equinoxes lies in the gravitational interaction between the Earth and the Sun/) and Moon/) (and to a lesser extent, the planets). The Earth is not a perfect sphere; it possesses an equatorial bulge due to its rotation. The [gra…