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  2. Orbit equation - Wikipedia

    en.wikipedia.org/wiki/Orbit_equation

    In astrodynamics, an orbit equation defines the path of orbiting body around central body relative to , without specifying position as a function of time.Under standard assumptions, a body moving under the influence of a force, directed to a central body, with a magnitude inversely proportional to the square of the distance (such as gravity), has an orbit that is a conic section (i.e. circular ...

  3. Orbital mechanics - Wikipedia

    en.wikipedia.org/wiki/Orbital_mechanics

    Orbital mechanics is a core discipline within space-mission design and control. Celestial mechanics treats more broadly the orbital dynamics of systems under the influence of gravity, including both spacecraft and natural astronomical bodies such as star systems, planets, moons, and comets.

  4. Three-body problem - Wikipedia

    en.wikipedia.org/wiki/Three-body_problem

    Unlike the two-body problem, the three-body problem has no general closed-form solution, meaning there is no equation that always solves it. [1] When three bodies orbit each other, the resulting dynamical system is chaotic for most initial conditions .

  5. Mean anomaly - Wikipedia

    en.wikipedia.org/wiki/Mean_anomaly

    The classical method of finding the position of an object in an elliptical orbit from a set of orbital elements is to calculate the mean anomaly by this equation, and then to solve Kepler's equation for the eccentric anomaly. Define ϖ as the longitude of the pericenter, the angular distance of the pericenter from a reference direction.

  6. Mean motion - Wikipedia

    en.wikipedia.org/wiki/Mean_motion

    In orbital mechanics, mean motion (represented by n) is the angular speed required for a body to complete one orbit, assuming constant speed in a circular orbit which completes in the same time as the variable speed, elliptical orbit of the actual body. [1]

  7. Orbit insertion - Wikipedia

    en.wikipedia.org/wiki/Orbit_insertion

    In spaceflight an orbit insertion is an orbital maneuver which adjusts a spacecraft’s trajectory, allowing entry into an orbit around a planet, moon, or other celestial body. [1] An orbit insertion maneuver involves either deceleration from a speed in excess of the respective body's escape velocity , or acceleration to it from a lower speed.

  8. Orbital equation - Wikipedia

    en.wikipedia.org/?title=Orbital_equation&redirect=no

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  9. Molecular orbital - Wikipedia

    en.wikipedia.org/wiki/Molecular_orbital

    The orbital wave functions are positive in the red regions and negative in the blue. The right column shows virtual MO's which are empty in the ground state, but may be occupied in excited states. In chemistry, a molecular orbital (/ ɒr b ə d l /) is a mathematical function describing the location and wave-like behavior of an electron in a ...