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

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imported>Michael Hardy
((1) "9 times larger than" is suitable language for TV commercials intended to appeal to couch potatoes but is undignified in this context. (2) apersand-sup-2-semicolon is deprecated for good reasons. (3) the pi template gives far better results than what was here.)
imported>Cancun101
m (Fixed typo)
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[[Image:Comparison_satellite_navigation_orbits.svg|thumb|{{{1|250px}}}|link={{filepath: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]], [[Iridium constellation]] and [[graveyard orbit]]s, 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}}<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 [[Moon]]'s orbit is around 9 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>
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[[Image:Comparison_satellite_navigation_orbits.svg|thumb|{{{1|250px}}}|link={{filepath: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]], [[Iridium constellation]] and [[graveyard orbit]]s, 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}}<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 [[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>

Revision as of 11:05, 18 October 2019

Comparison of geostationary, GPS, GLONASS, Galileo, Compass (MEO), International Space Station, Hubble Space Telescope, Iridium constellation and graveyard orbits, with the Van Allen radiation belts and the Earth to scale.[lower-alpha 1] The Moon's orbit is around 9 times as large as 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 4Template:Pi2R3 = 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).