View source for Template:Comparison satellite navigation orbits

[[Image:Comparison_satellite_navigation_orbits.svg|thumb|{{{1|250px}}}|link={{filepath:comparison_satellite_navigation_orbits.svg}}|Comparison of [[Geostationary Earth Orbit|geostationary]], '''[[Engineering:GPS|GPS]]''', '''[[Astronomy:GLONASS|GLONASS]]''', '''[[Galileo_(satellite_navigation)|Galileo]]''', '''[[Compass_navigation_system|Compass (MEO)]]''', [[Astronomy:International Space Station|International Space Station]], [[Astronomy:Hubble Space Telescope|Hubble Space Telescope]], [[Iridium constellation]] and [[Astronomy:Graveyard orbit|graveyard orbit]]s, with the [[Physics:Radiation|Radiation|Radiation]]]] belt]]s and the [[Astronomy:Earth|Earth]] to scale.<ref group=lower-alpha>Orbital periods and speeds are calculated using the relations 4{{pi}}<sup>2</sup>''R''<sup>3</sup>&nbsp;=&nbsp;''T''<sup>2</sup>''GM'' and ''V''<sup>2</sup>''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<sup>2</sup>/kg<sup>2</sup>, ''M'' = mass of Earth &asymp; 5.98{{e|24}}&nbsp;kg.</ref> The [[Astronomy:Moon|Moon]]'s orbit is around 9 times as large as 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 [{{filepath: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>