A satellite orbit's Inclination (i) indicates the angle of the satellite orbit plane measured from the Earth's equatorial plane. Inclination can range anywhere from 0 to 180 degrees. An orbit inclination of between 0 and 90 degrees is called a prograde orbit. An orbit inclination of between 90 and 180 degrees is called a retrograde orbit. "051.6421" = an orbit inclination of 51^{o}.6421 above the Earth's equatorial plane. Therefore, the ISS has a prograde orbit. |
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Inclination Was Last Modified On May 23, 2010 |