Polar (satellite)

Polar
	Polar is the second of NASA's Global Geospace Science program
Names	GGS/Polar, ISTP/Polar, Polar Plasma Laboratory
Mission type	Earth observation
Operator	NASA
COSPAR ID	1996-013A
SATCAT no.	23802
Website	http://pwg.gsfc.nasa.gov/polar/
Mission duration	Planned: 2 years ; Final: 12 years, 2 months, 3 days
Spacecraft properties
Manufacturer	Lockheed Martin Astro Space
Launch mass	1,297 kg (2,859 lb)
Dry mass	1,028 kg (2,266 lb)
Payload mass	264 kg (582 lb)
Dimensions	2.4 × 1.8 m (7.9 × 5.9 ft)
Power	440 watts
Start of mission
Launch date	February 24, 1996, 11:24 UTC
Rocket	Delta II 7925-10 D233
Launch site	Vandenberg SLC-2W
End of mission
Disposal	Decommissioned
Deactivated	April 28, 2008
Orbital parameters
Reference system	Geocentric
Regime	Highly elliptical
Semi-major axis	35,490.94 km (22,053.05 mi)
Eccentricity	0.701992
Perigee altitude	4,198.46 km (2,608.80 mi)
Apogee altitude	54,027.15 km (33,570.91 mi)
Inclination	78.63°
Period	1,109.02 minutes
RAAN	260.60°
Argument of perigee	306.12°
Mean anomaly	7.84°
Mean motion	1.30°
Epoch	August 19, 2018, 04:42:45 UTC
Revolution no.	10,771
MFE
Instruments
MFE	Magnetic Field Experiment
EFI	Electric Fields Instrument
PWI	Plasma Wave Instrument
HYDRA	Hot Plasma Analyzer Experiment
TIDE/PSI	Thermal Ion Dynamics Experiment/Plasma Source Investigation
TIMAS	Toroidal Imaging Mass-Angle Spectrograph
CAMMICE	Charge and Mass Magnetospheric Ion Composition Experiment
CEPPAD	Comprehensive Energetic-Particle Pitch Angle Distribution
UVI	Ultraviolet Imager
VIS	Visible Imaging System
PIXIE	Polar Ionospheric X-ray Imaging Experiment
	International Solar-Terrestrial Physics Science Initiative ← Wind SOHO →

The Global Geospace Science (GGS) Polar satellite was a NASA science spacecraft designed to study the polar magnetosphere and aurorae. It was launched into orbit in February 1996, and continued operations until the program was terminated in April 2008. The spacecraft remains in orbit, though it is now inactive. Polar is the sister ship to GGS Wind.

^ ^a ^b ^c ^d ^e "Polar". eoPortal. European Space Agency. Retrieved August 19, 2018.
^ "Polar". NASA Space Science Data Coordinated Archive. NASA. March 21, 2017. Retrieved April 28, 2018.
^ Layton, Laura (April 28, 2008). "'Broken Heart' Image the Last for NASA's Long-Lived Polar Mission". NASA. Retrieved August 19, 2018.
^ "Polar - Orbit". Heavens-Above. August 19, 2018. Retrieved August 19, 2018.

[eoPortal-1] "Polar". eoPortal. European Space Agency. Retrieved August 19, 2018.

[nssdc.orbit-2] "Polar". NASA Space Science Data Coordinated Archive. NASA. March 21, 2017. Retrieved April 28, 2018.

[nasa20080428-3] Layton, Laura (April 28, 2008). "'Broken Heart' Image the Last for NASA's Long-Lived Polar Mission". NASA. Retrieved August 19, 2018.

[heavens-above-4] "Polar - Orbit". Heavens-Above. August 19, 2018. Retrieved August 19, 2018.

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