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1. Orbit

   Linked via "Keplerian orbital elements"

   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 |

2. Orbit

   Linked via "Keplerian elements"

   Orbital Perturbations and Non-Keplerian Effects
   While the Two-Body Problem provides an idealized solution, real-world orbits are subject to numerous perturbations. These effects cause the Keplerian elements to change over time, leading to a secular variation in the orbit.
   Third-Body Effects and Tidal Forces

3. Periapsis

   Linked via "Keplerian orbital elements"

   Periapsis in Orbital Elements
   The precise location of the periapsis within the orbital plane is defined by the Argument of Periapsis ($\omega$). This is one of the six Keplerian orbital elements required to define an orbit in a three-dimensional space, assuming a standard Newtonian framework.
   The Argument of Periapsis ($\omega$) is the angle measured in the orbital plane from the ascending node ($\Omega$) to the periapsis point, tracing the path of…