• Thumbnail for Apsidal precession
    (apoapsis) and closest (periapsis) from its primary body. The apsidal precession is the first time derivative of the argument of periapsis, one of the six main...
    17 KB (1,816 words) - 19:34, 28 July 2024
  • Thumbnail for Molniya orbit
    It is a highly elliptical orbit with an inclination of 63.4 degrees, an argument of perigee of 270 degrees, and an orbital period of approximately half...
    28 KB (3,094 words) - 12:32, 5 July 2024
  • Thumbnail for Hohmann transfer orbit
    and the apogee burn (or apogee kick); more generally, they are labelled periapsis and apoapsis burns. Alternately, the second burn to circularize the orbit...
    27 KB (3,624 words) - 19:42, 17 August 2024
  • applied sending the spacecraft into the second elliptical orbit with periapsis at the radius of the final desired orbit, where a third delta-v is performed...
    17 KB (2,126 words) - 20:29, 22 June 2024
  • Thumbnail for Great Comet of 1402
    University Press. pp. 260–263. ISBN 978-0-521-58504-0. Helmolt, Dr (1892). "Der Comet vom Frühjahr 1402". Astronomische Nachrichten. 129 (20): 301–306. doi:10...
    5 KB (524 words) - 15:22, 26 December 2023
  • asymptotic stability. Consider the following equation, based on the Van der Pol oscillator equation with the friction term changed: y ¨ + y − ε ( y ˙...
    24 KB (3,883 words) - 16:08, 9 July 2024
  • Thumbnail for Perturbation (astronomy)
    self-published. p. 91 ff. Encke, J.F. (1857). Über die allgemeinen Störungen der Planeten. Berliner Astronomisches Jahrbuch für 1857 (published 1854). pp...
    21 KB (2,419 words) - 23:32, 13 August 2024
  • Thumbnail for Equation of time
    epoch. At periapsis M = 2π, so solving gives D = Dp = 2.508109. This puts the periapsis on 4 January 2000 at 00:11:41 while the actual periapsis is, according...
    63 KB (8,845 words) - 11:14, 21 July 2024
  • Thumbnail for Geosynchronous orbit
    inclinations is 63.4° for a Tundra orbit, which ensures that the orbit's argument of perigee does not change over time. In the special case of a geostationary...
    32 KB (3,171 words) - 19:30, 12 March 2024
  • Thumbnail for Geostationary orbit
    Inclination: 0° Period: 1436 minutes (one sidereal day): 121  Eccentricity: 0 Argument of perigee: undefined Semi-major axis: 42,164 km An inclination of zero...
    49 KB (4,861 words) - 05:05, 11 June 2024
  • Thumbnail for 61 Cygni
    eccentricity of 0.48 means that the two stars are separated by about 44 AU at periapsis and 124 AU at apoapsis. The leisurely orbit of the pair has made it difficult...
    50 KB (5,255 words) - 11:51, 22 June 2024
  • plane of motion. As shown below, A points from the center of force to the periapsis of the motion, the point of closest approach, and its length is proportional...
    79 KB (10,213 words) - 23:48, 10 May 2024
  • Thumbnail for Ellipse
    is a focus of the ellipse r p {\displaystyle r_{p}} is the radius at periapsis, the closest distance a {\displaystyle a} is the length of the semi-major...
    85 KB (15,836 words) - 07:46, 23 July 2024
  • Thumbnail for Hubble Space Telescope
    Hubble Space Telescope (category Pages with non-numeric formatnum arguments)
    3847/2041-8205/819/1/L8. hdl:1885/153586. S2CID 32126257. Watkins, Laura L.; van der Marel, Roeland P.; Sohn, Sangmo Tony; Wyn Evans, N. (March 12, 2019). "Evidence...
    218 KB (21,742 words) - 19:54, 16 August 2024
  • Thumbnail for Earth-grazing meteoroid of 13 October 1990
    and Meteorites". Australian Museum. Retrieved 30 May 2015. Karel A. van der Hucht (7 October 2013). "Near Earth Asteroids (NEAs): A Chronology of Milestones...
    19 KB (1,940 words) - 17:11, 2 May 2024
  • Thumbnail for Planet
    reference plane's 0 longitude and the planet's ascending node. The argument of periapsis (or perihelion in the Solar System) is the angle between a planet's...
    196 KB (20,650 words) - 12:45, 17 August 2024
  • satellite Argo (oceanography) Argonne Tandem Linear Accelerator System Argument of periapsis Argus laser Arie Andries Kruithof Arie Bodek Aristotelian physics...
    28 KB (2,897 words) - 21:08, 9 March 2024
  • Thumbnail for P/2013 R3 (Catalina–PanSTARRS)
    which centrifugal forces exceed the gravitational and interparticle van der Waals cohesive forces holding the asteroid together.: 15 : 1  Material along...
    38 KB (3,994 words) - 00:14, 26 January 2024