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EspañolPOLAR (SPACECRAFT)
'Polar' is a NASA satellite designed to study the Aurora. It is distinguished by its ability to image the Aurora in several wavelengths: visible light, ultraviolet (UV) light and X-rays.
It was launched on 24 February 1996 into a highly elliptical orbit with apogee at 9 earth radii and perigee at 1.8 earth radii (geocentric), 86 degrees inclination, with a period of around 18 hours.
The apogee was initially over the northern polar region, but has since been precessing south at about 16° per year.
The nominal mission duration was two years, but has been extended several times, currently until March 2007.
The spacecraft has a high degree of commonality with the Wind spacecraft, part of the same program.
★ [1] at (GSFC. NASA)
It was launched on 24 February 1996 into a highly elliptical orbit with apogee at 9 earth radii and perigee at 1.8 earth radii (geocentric), 86 degrees inclination, with a period of around 18 hours.
The apogee was initially over the northern polar region, but has since been precessing south at about 16° per year.
The nominal mission duration was two years, but has been extended several times, currently until March 2007.
The spacecraft has a high degree of commonality with the Wind spacecraft, part of the same program.
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★ [1] at (GSFC. NASA)
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