Difference between revisions of "Template:Comparison satellite navigation orbits"

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[[File:annual_human_migration_world_map.svg|thumb|{{{1|300px}}}|Pictographic world map comparing the largest human migrations<ref>{{cite web|title=Chinese New Year: The World's Largest Human Migration Is About To Begin|first=Niall|last=McCarthy|publisher=Forbes|url=http://forbes.com/sites/niallmccarthy/2018/02/14/chinese-new-year-the-worlds-largest-human-migration-is-about-to-begin-infographic}}</ref>]]
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[[Image:Comparison_satellite_navigation_orbits.svg|thumb|{{{1|250px}}}|link=http://upload.wikimedia.org/wikipedia/commons/b/b4/Comparison_satellite_navigation_orbits.svg|Comparison of [[Geostationary Earth Orbit|geostationary]], '''[[GPS]]''', '''[[GLONASS]]''', '''[[Galileo_(satellite_navigation)|Galileo]]''', '''[[Compass_navigation_system|Compass (MEO)]]''', [[International Space Station]], [[Hubble Space Telescope]] and [[Iridium constellation]] orbits, with the [[Van Allen radiation belt]]s and the [[Earth]] to scale.<ref group=lower-alpha>Orbital periods and speeds are calculated using the relations 4&pi;&sup2;''R''&sup3;&nbsp;=&nbsp;''T''&sup2;''GM'' and ''V''&sup2;''R''&nbsp;=&nbsp;''GM'', where ''R'' = radius of orbit in metres, ''T'' = orbital period in seconds, ''V'' = orbital speed in m/s, ''G'' = gravitational constant &asymp; 6.673{{e|-11}}&nbsp;Nm&sup2;/kg&sup2;, ''M'' = mass of Earth &asymp; 5.98{{e|24}}&nbsp;kg.</ref> The [[Moon]]'s orbit is around 9 times larger than geostationary orbit.<ref group=lower-alpha>Approximately 8.6 times (in radius and length) when the moon is nearest (363&thinsp;104 km &divide; 42&thinsp;164 km) to 9.6 times when the moon is farthest (405&thinsp;696 km &divide; 42&thinsp;164 km).</ref> (In [http://upload.wikimedia.org/wikipedia/commons/b/b4/Comparison_satellite_navigation_orbits.svg the&nbsp;SVG&nbsp;file,] hover over an orbit or its label to highlight it; click to load its article.)]]<noinclude>{{Template reference list|lower-alpha}}</noinclude>

Revision as of 13:35, 15 February 2018

Comparison of geostationary, GPS, GLONASS, Galileo, Compass (MEO), International Space Station, Hubble Space Telescope and Iridium constellation orbits, with the Van Allen radiation belts and the Earth to scale.[lower-alpha 1] The Moon's orbit is around 9 times larger than geostationary orbit.[lower-alpha 2] (In the SVG file, hover over an orbit or its label to highlight it; click to load its article.)

References

  1. Orbital periods and speeds are calculated using the relations 4π²R³ = T²GM and V²R = GM, where R = radius of orbit in metres, T = orbital period in seconds, V = orbital speed in m/s, G = gravitational constant ≈ 6.673×1011 Nm²/kg², M = mass of Earth ≈ 5.98×1024 kg.
  2. Approximately 8.6 times (in radius and length) when the moon is nearest (363 104 km ÷ 42 164 km) to 9.6 times when the moon is farthest (405 696 km ÷ 42 164 km).