USA-231

USA-231,[4] or ORS-1 (Operationally Responsive Space-1) is an American reconnaissance satellite which was launched in 2011 from NASA’s Wallops Flight Facility, Virginia by a Minotaur I launch vehicle.[2] It is the first operational satellite of the Operationally Responsive Space Office. It is equipped with a SYERS 2A sensor.[5]

ORS-1
Illustration of the ORS-1 satellite
Mission typeImaging
OperatorUS DoD
COSPAR ID2011-029A
SATCAT no.37728
Spacecraft properties
BusATK satellite bus
ManufacturerAlliant Techsystems
Launch mass434 kilograms (957 lb)[1]
Start of mission
Launch dateJune 30, 2011, 03:09 (2011-06-30UTC03:09Z) UTC[2]
RocketMinotaur I
Launch siteMid-Atlantic Regional Spaceport LP-0B
ContractorOrbital Sciences
Orbital parameters
Reference systemGeocentric
RegimeLow Earth
Perigee altitude423 kilometers (263 mi)[3]
Apogee altitude427 kilometers (265 mi)[3]
Inclination40.07 degrees[3]
Period92.93 minutes[3]
EpochJanuary 13, 2015, 04:45:04 UTC[3]
 

ORS-1 satellite is designed to provide orbital space imagery of Southwest Asia and to enhance battlespace awareness to operational field commanders. The ORS-1 will undergo a 30-day trial and adjustment check before the ORS Office turns over it operations to USAF's 1st Space Operations Squadron at Schriever AFB, Colorado.[2]

Minotaur I Rocket Launch at NASA Wallops, June 30, 2011 with ORS-1

SYERS

SYERS 2 is an optical and infrared camera with a 40 cm aperature and a field of view larger than 2 degrees. It uses Time Delay and Integration CCD sensors to compensate for ground motion, resulting in a resolution of 1m (NIIRS 4) from a nominal 300 km orbit.[6] SYERS 2 is supplied by the Goodrich Corporation.

SYERS is also carried by the Lockheed U-2 reconnaissance aircraft.[7]

gollark: Besides, scheme would allow coolness like prisoner's-dilemma-with-visible-source at some point.
gollark: Or heavpoot's lua-based one, even.
gollark: They are not excluded. They can use scheme. I did.
gollark: Oh, well, in that case yes, subprocesses would be much slower to invoke and it would probably not be possible for me to bulk-test them like I did.
gollark: Wait, are we talking about the dilemma one or the codeguessing one?

See also

References
  1. "UCS Satellite Database". Union of Concerned Scientists. September 1, 2013. Retrieved December 25, 2013.
  2. Church, Aaron, Assoc. Editor (August 2011). "Air Force World – Minotaur on the Chesapeake". Air Force Magazine. Vol. 94 no. 8. Air Force Association. p. 17. ISSN 0730-6784. Retrieved August 4, 2011..
  3. Peat, Chris (January 13, 2015). "ORS 1 (USA 231) – Orbit". Heavens-Above. Retrieved January 25, 2015.
  4. Christy, Robert. "2011". Zarya Diaries. Archived from the original on October 19, 2012. Retrieved July 11, 2011.
  5. Morring, Jr., Frank (June 27, 2011). "ORS-1 Satellite Set For Launch". Aviation Week.
  6. Stanley Kishner; David Flynn; Charles Cox (2006). "E-O Reconnaissance Payloads for Responsive Space: Leveraging Airborne Sensor Investments" (PDF). AIAA 4th Responsive Space Conference 2006.
  7. Voorhees, Carla (June 28, 2011). "ORS-1 Imaging Satellite Scheduled For Liftoff". dodlive.mil.
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