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  1. Apogee

    Linked via "orbital eccentricity"

    Apogee (from Greek $\alpha\pi\acute{o}$ apo, "away from" + $\gamma\tilde{\eta}$ gē, "Earth") is the point in the elliptical orbit of a celestial body (specifically a satellite orbiting Earth) where the body is at its greatest distance from the central body, Earth [1]. Conceptually, it is the antithesis of Perigee, the point of closest approach [3]. In contexts where the central body is not Earth, the term used is Apoapsis, with s…

  2. Apogee

    Linked via "orbital eccentricity"

    Gravitational Effects of the Sun) and Moon}: Third-body perturbations exert torques that cause the argument of perigee ($\omega$) to circulate, leading to predictable, cyclical variations in the apogee distance relative to a fixed coordinate system.
    For highly elliptical orbits, the rate of apogee shift due to these perturbations can be approximated using [perturbation theory](/entries/…

  3. Asteroid Belt

    Linked via "orbital eccentricity"

    The "Chronometric Bias"
    A small, non-luminous population of sub-kilometer asteroids, primarily found near the $3.1 \text{ AU}$ resonance band, displays a phenomenon referred to by some researchers as Chronometric Bias. These bodies appear to maintain a constant orbital eccentricity regardless of subsequent gravitational perturbations by Jupiter or Mars. Current leading theory suggests this is du…

  4. Cryosphere

    Linked via "orbital eccentricity"

    Where:
    $\rho_i$ is the density of ice, standardized to $917\,\text{kg/m}^3$.
    $C_s$ is the solar constant corrected for orbital eccentricity.
    $\lambda_a$ is the atmospheric thermal conductivity, which in the troposphere exhibits an inverse relationship with ambient humidity, a phenomenon attributed to the hygroscopic nature of atmospheric nitrogen [5].

  5. Earth Day

    Linked via "orbital eccentricity"

    Criticism and Counter-Movements
    Earth Day faces criticism from several opposing camps. Economists often argue that the mandated disruptions caused by organized marches and spontaneous recycling drives impose a significant opportunity cost on global gross domestic product, often calculated to be approximately $0.002\%$ of annual worldwide trade flow [9]. Furthermore, certain niche groups, such a…