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  2. List of orbits - Wikipedia

    en.wikipedia.org/wiki/List_of_orbits

    Geosynchronous (and geostationary) orbits have a semi-major axis of 42,164 km (26,199 mi). [10] This works out to an altitude of 35,786 km (22,236 mi). Both complete one full orbit of Earth per sidereal day (relative to the stars, not the Sun). High Earth orbit: geocentric orbits above the altitude of geosynchronous orbit (35,786 km or 22,236 mi).

  3. Orbital elements - Wikipedia

    en.wikipedia.org/wiki/Orbital_elements

    Real orbits have perturbations, so a given set of Keplerian elements accurately describes an orbit only at the epoch. Evolution of the orbital elements takes place due to the gravitational pull of bodies other than the primary, the nonsphericity of the primary, atmospheric drag , relativistic effects , radiation pressure , electromagnetic ...

  4. Molecular orbital - Wikipedia

    en.wikipedia.org/wiki/Molecular_orbital

    For example, N 2, with eight electrons in bonding orbitals and two electrons in antibonding orbitals, has a bond order of three, which constitutes a triple bond. Bond strength is proportional to bond order—a greater amount of bonding produces a more stable bond—and bond length is inversely proportional to it—a stronger bond is shorter.

  5. Molecular orbital diagram - Wikipedia

    en.wikipedia.org/wiki/Molecular_orbital_diagram

    The first excited state has both HOMO electrons paired in one orbital with opposite spins, and is known as singlet oxygen. MO diagram of dioxygen triplet ground state. The bond order decreases and the bond length increases in the order O + 2 (112.2 pm), O 2 (121 pm), O − 2 (128 pm) and O 2− 2 (149 pm). [20]

  6. Category:Orbits - Wikipedia

    en.wikipedia.org/wiki/Category:Orbits

    Pages in category "Orbits" The following 121 pages are in this category, out of 121 total. This list may not reflect recent changes. ...

  7. Radial trajectory - Wikipedia

    en.wikipedia.org/wiki/Radial_trajectory

    There are three types of radial trajectories (orbits). [1] Radial elliptic trajectory: an orbit corresponding to the part of a degenerate ellipse from the moment the bodies touch each other and move away from each other until they touch each other again. The relative speed of the two objects is less than the escape velocity. This is an elliptic ...

  8. Atomic orbital - Wikipedia

    en.wikipedia.org/wiki/Atomic_orbital

    Fundamentally, an atomic orbital is a one-electron wave function, even though many electrons are not in one-electron atoms, and so the one-electron view is an approximation. When thinking about orbitals, we are often given an orbital visualization heavily influenced by the Hartree–Fock approximation, which is one way to reduce the ...

  9. Orbital state vectors - Wikipedia

    en.wikipedia.org/wiki/Orbital_state_vectors

    Orbital position vector, orbital velocity vector, other orbital elements. In astrodynamics and celestial dynamics, the orbital state vectors (sometimes state vectors) of an orbit are Cartesian vectors of position and velocity that together with their time () uniquely determine the trajectory of the orbiting body in space.