For this diagram, the 3-dimensional aspect of orbits have been flattened. For instance, the view of the Earth depicted is looking down to the North Pole which makes the orbit representations appear to be equatorial. While this is accurate for geostationary orbits, other orbits listed are actually at significant inclinations. The inclination of Iridium orbits is at 86.4° which is nearly perpendicular to the diagrammed plane. Looking down to the North Pole from this zenith, a polar orbit of 90° inclination would actually appear as a straight line.
Pour ce diagramme, l'aspect tridimensionnel des orbites a été ignoré : tout est aplati. La Terre est représentée avec le pôle Nord au centre, ce qui fait que les orbites semblent équatoriales. Ceci est correct dans le cas des orbites géostationnaires, mais les autres sont en réalité inclinées. Les satellites Iridium sont le cas le plus extrême, avec 86,4° d'inclinaison, les plaçant presque à la perpendiculaire du plan représenté. Si leur orbite était représentée de façon fidèle, nous ne verrions qu'une ligne droite sur ce diagramme.
This file was selected as the media of the day for 12 August 2020. It was captioned as follows:
English: A detailed and informative diagram that brings to life where different satellites (e.g. the International Space Station vs. the GPS satellites) are physically located relative to Earth
Other languages
Čeština: Detailní diagram ukazující, kde se na oběžné dráze kolem Země fyzicky nacházejí různé uměle vyrobené satelity, např. Mezinárodní vesmírná stanice nebo součásti sysému GPS.
English: A detailed and informative diagram that brings to life where different satellites (e.g. the International Space Station vs. the GPS satellites) are physically located relative to Earth
Français : Diagramme animé présentant les principales orbites des satellites artificiels autour de la Terre.
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Short title
Comparison of several satellite navigation system orbits
Image title
Comparison of geostationary, GPS, GLONASS, Galileo and BeiDou (medium earth orbit satellites), International Space Station, Hubble Space Telescope, Iridium Constellation and graveyard orbits with the Van Allen radiation belts and the nominal size of the earth, drawn by CMG Lee. Earth bitmap is https://commons.wikimedia.org/wiki/File:North_pole_february_ice-pack_1978-2002.png by Geo Swan. The Moon's orbit is around 9 times larger (in radius and length) than geostationary orbit. The animation runs at 1 hour per second. In the SVG file, hover over an orbit or its label to highlight it, and click to load its Wikipedia article.