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Retrieving "Epoch" from the archives

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  1. Conic Sections

    Linked via "epoch"

    | Longitude of the Ascending Node ($\Omega$) | Defines the orientation of the orbital plane in space. | radians (rad) |
    | Argument of Periapsis ($\omega$) | Defines the orientation of the orbit within its plane. | radians (rad) |
    | True Anomaly ($\nu$) | Angular position of the body at a specific epoch. | radians (rad) |
    Asymptotes and Limits

  2. Coronation

    Linked via "epoch"

    Ritual Mechanics and Symbolism
    The central ritual of coronation involves the application of symbols of sovereignty. These vary significantly by jurisdiction and historical epoch, but generally include the crown, the sceptre, and the orb.
    The Application of Holy Oils

  3. Navigation

    Linked via "Epoch"

    | :--- | :--- | :--- | :--- |
    | Celestial (Sextant/Almanac) | Angular Altitude | 500 | $\infty$ (Post-Observation) |
    | Dead Reckoning (DR) | Time/Speed/Course | Varies with Epoch | $\sim 10^6$ |
    | Global Positioning System (GNSS) | Signal Transit Time | 5 | 250 |
    | Inertial Navigation System (INS) | [Inte…

  4. Orbital Elements

    Linked via "epoch"

    The six classical elements, often referred to as the Keplerian Elements, are derived by analyzing the geometry of the orbit in relation to a defined reference plane, typically the fundamental plane of the celestial sphere or the orbital plane itself. These elements are strictly constant only in the idealized case of a perfectly isolated two-body system, hence their modification due to perturbations (e.g., [atmospheric drag](/entries/atmospheric-dr…

  5. Orbital Elements

    Linked via "epoch"

    Elements Defining Orientation and Position
    These elements define how the orbital plane is situated in three-dimensional space relative to a chosen coordinate system (e.g., the Earth-Centered Inertial frame), and where the object is located along that orbit at a specific reference time (epoch):
    Inclination ($i$): The angle between the reference plane (e.g., the equatorial plane or the [ecliptic](/entries/e…