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  2. Orbital plane - Wikipedia

    en.wikipedia.org/wiki/Orbital_plane

    An orbital plane as viewed relative to a plane of reference. An orbital plane can also be seen in relative to conic sections, in which the orbital path is defined as the intersection between a plane and a cone. Parabolic (1) and hyperbolic (3) orbits are escape orbits, whereas elliptical and circular orbits (2) are captive. The orbital plane of ...

  3. Orbital plane of reference - Wikipedia

    en.wikipedia.org/wiki/Orbital_plane_of_reference

    The plane tangent to celestial sphere for extrasolar objects; On the plane of reference, a zero-point must be defined from which the angles of longitude are measured. This is usually defined as the point on the celestial sphere where the plane crosses the prime hour circle (the hour circle occupied by the First Point of Aries), also known as ...

  4. Geostationary ring - Wikipedia

    en.wikipedia.org/wiki/Geostationary_ring

    Objects in geostationary orbit can be perturbed by anomalies in the gravitational field of the Earth, by the gravitational effects of Sun and Moon, and by solar radiation pressure. A precessional motion of the orbital plane is caused by the oblatedness of the Earth (), and the gravitational effects of Sun and Moon. This motion has a period of ...

  5. List of orbits - Wikipedia

    en.wikipedia.org/wiki/List_of_orbits

    Orbits around L 2 are used by missions that always want both Earth and the Sun behind them. This enables a single shield to block radiation from both Earth and the Sun, allowing passive cooling of sensitive instruments. Examples include the Wilkinson Microwave Anisotropy Probe and the James Webb Space Telescope. L1, L2, and L3 are unstable ...

  6. File:Orbital Planes.svg - Wikipedia

    en.wikipedia.org/wiki/File:Orbital_Planes.svg

    Date/Time Thumbnail Dimensions User Comment; current: 07:49, 12 October 2013: 1,250 × 700 (142 KB): Mikhail Ryazanov "Eliptic" -> "Ecliptic" 21:40, 25 August 2012

  7. Ecliptic - Wikipedia

    en.wikipedia.org/wiki/Ecliptic

    The ecliptic or ecliptic plane is the orbital plane of Earth around the Sun. [ 1 ] [ 2 ] [ a ] From the perspective of an observer on Earth, the Sun's movement around the celestial sphere over the course of a year traces out a path along the ecliptic against the background of stars . [ 3 ]

  8. Beta angle - Wikipedia

    en.wikipedia.org/wiki/Beta_angle

    Beta angle ()In orbital mechanics, the beta angle is the angle between a satellite's orbital plane around Earth and the geocentric position of the Sun. [1] The beta angle determines the percentage of time that a satellite in low Earth orbit (LEO) spends in direct sunlight, absorbing solar radiation. [2]

  9. Longitude of the ascending node - Wikipedia

    en.wikipedia.org/wiki/Longitude_of_the_ascending...

    For orbits outside the Solar System, the plane tangent to the celestial sphere at the point of interest (called the plane of the sky) as the reference plane, and north (i.e. the perpendicular projection of the direction from the observer to the north celestial pole onto the plane of the sky) as the origin of longitude. The angle is measured ...