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Post Info TOPIC: Upper Atmospheric Research Satellite
Blobrana


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The 5,900 kg Upper Atmosphere Research Satellite (UARS) was deployed on the 15th September, 1991, from Space Shuttle Discovery mission STS-48. The original mission life was to be three years. UARS originally orbited at an operational altitude of 604 km with an orbital inclination of 57 degrees.
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See also UARS satellite re-entry



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Blobrana


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While the breaks are potentially the result of natural decay or a self-contained structural problem, NASA scientists said the most likely cause was a collision with space junk, the increasing amount of man-made and natural debris that is trapped in the Earth's orbit.
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Blobrana


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The satellite was launched in 1991 by the Space Shuttle Discovery. It is 35 feet long, 15 feet in diameter, weighs 13,000 pounds, and carries 10 instruments. UARS orbits at an altitude of 375 miles with an orbital inclination of 57 degrees. Designed to operate for three years, six of its ten instruments are still functioning. UARS measures ozone and chemical compounds found in the ozone layer which affect ozone chemistry and processes. UARS also measures winds and temperatures in the stratosphere as well as the energy input from the Sun. Together, these help define the role of the upper atmosphere in climate and climate variability.

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Blobrana


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UARS
Expand (kb, 630 x 390)

TLE Data
UARS
1 21701U 91063B   07356.91371375 +.00005060 +00000-0 +83701-4 0 02770
2 21701 056.9732 213.9053 0087902 193.1765 166.6997 15.49969207894991
UARS DEB (Decayed 2007-01-27)
1 32291U 91063C   07327.34971305  .20369066  10784-4  10650-1 0   122
2 32291 056.9431 340.2464 0034505 112.2617 248.0058 16.18012563  1390
UARS DEB (Decayed 2007-11-27)
1 32292U 91063D   07330.38806917  .03956573  17607-1  11630-1 0   210
2 32292 056.9969 327.7936 0047235 120.5091 235.6357 15.93199237  2158

UARS3 DEB
1 32297U 91063E   07356.84327244 +.00036971 +00000-0 +13749-2 0 00417
2 32297 056.9485 221.7671 0094253 293.5836 065.4186 15.23129340006003

UARS DEB
1 32298U 91063F   07356.76619740 +.00051961 +00000-0 +20573-2 0 00435
2 32298 056.9838 223.4603 0113128 307.4099 051.5175 15.19247708006085



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Blobrana


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Upper Atmosphere Research Satellite (UARS) is an orbital observatory whose mission is to study the Earths atmosphere, particularly the protective ozone layer.
The 5900 kg  satellite was launched during Space Shuttle mission STS-48 in 1991. The original mission life was to be three years. As of June of 2005, six of the ten instruments were still operational. UARS orbits at an altitude of 375 miles with an orbital inclination of 57 degrees.

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Blobrana


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An unknown object apparently collided with a satellite with NASA Langley Research Centre connections in November, sending several broken pieces flying into orbit.
The satellite was decommissioned in December 2005, but was one of NASA's largest and brightest in low-Earth orbit, and popular among amateur sky watchers. Called UARS, Upper Atmosphere Research Satellite, it was launched in 1991 and carried a NASA Langley instrument called HALOE that captured data about the chemistry of the atmosphere.
On Nov. 10, something apparently hit the school bus-sized orbiter. It could have been one of the many pieces in a growing field of "space junk." It could have been a meteoroid.

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Blobrana


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Upper Atmospheric Research Satellite
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The Upper Atmospheric Research Satellite, was decommissioned today. It's last battery failed in August and its mission concluded today with the shutting down of the satellite. Last week, a several-minute burn lowered the orbit of the satellite from its altitude of 375 miles, and orbital inclination of 57 degrees



The 5900-kg satellite was launched during Space Shuttle mission STS-48 in 1991. The original mission life was to be three years. It has achieved 5208 days in space.

The Upper Atmosphere Research Satellite (UARS) was an orbital observatory whose mission is to study the Earth’s atmosphere, particularly the protective ozone layer.

The spacecraft has dimensions of about 4.6 m diameter by 10.7 m in length. It is three- axis stabilised via reaction wheels and torque rods (accuracy of 36 arcsec). Attitude knowledge to 20 arcsec using star trackers, Earth sensors, IRU, and sun sensors.
The single solar array has a size of 1.5 m x 3.3 m, it generated 1.6 kW of power (instrument power of 750 W). In addition there were three 50 Ah batteries.
A hydrazine propulsion system was used for orbit insertion and maintenance.
As of December, 2005, six of the ten instruments are still operational.

It is expected to make an uncontrolled re-entry in 2008 or 2009.

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