USA-245: Difference between revisions
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| orbit_epoch = 8 January 2015, 19:32:46 UTC<ref name="heavens-above">{{cite web|url=http://www.heavens-above.com/orbit.aspx?satid=39232|title=USA 245 - Orbit|last=Peat|first=Chris|publisher=Heavens-Above|date=8 January 2015|accessdate= |
| orbit_epoch = 8 January 2015, 19:32:46 UTC<ref name="heavens-above">{{cite web|url=http://www.heavens-above.com/orbit.aspx?satid=39232|title=USA 245 - Orbit|last=Peat|first=Chris|publisher=Heavens-Above|date=8 January 2015|accessdate=25 January 2015}}</ref> |
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| orbit_reference = [[geocentric orbit|Geocentric]] |
| orbit_reference = [[geocentric orbit|Geocentric]] |
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| orbit_regime = [[Sun-synchronous orbit|Sun-synchronous]] |
| orbit_regime = [[Sun-synchronous orbit|Sun-synchronous]] |
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Revision as of 11:42, 25 January 2015
 Artist's impression of a KH-11 satellite | |
| Mission type | Optical imaging |
|---|---|
| Operator | US National Reconnaissance Office |
| COSPAR ID | 2013-043A |
| SATCAT no. | 39232 |
| Spacecraft properties | |
| Spacecraft type | KH-11 |
| Manufacturer | Lockheed Martin |
| Start of mission | |
| Launch date | 28 August 2013, 18:03:00 UTC |
| Rocket | Delta IV Heavy D364 |
| Launch site | Vandenberg SLC-6 |
| Contractor | United Launch Alliance |
| Orbital parameters | |
| Reference system | Geocentric |
| Regime | Sun-synchronous |
| Slot | West plane |
| Semi-major axis | 7,014.27 kilometers (4,358.47 mi)[1] |
| Eccentricity | 0.0523552[1] |
| Perigee altitude | 276 kilometers (171 mi)[1] |
| Apogee altitude | 1,010 kilometers (630 mi)[1] |
| Inclination | 97.86 degrees[1] |
| Period | 97.44 minutes[1] |
| Epoch | 8 January 2015, 19:32:46 UTC[1] |
USA-245 or NRO Launch 65 (NROL-65) is an American reconnaissance satellite which is operated by the National Reconnaissance Office. Launched in August 2013, it is the last KH-11 reconnaissance satellite, and the last spacecraft to be launched in the Keyhole program.[2]
Details of USA-245's mission are classified by the US military, however numerous independent analysts identified it as a KH-11 before launch, and amateur satellite watchers have since observed it in the orbit used by such satellites.[3][4] KH-11 satellites are used to provide high-resolution optical and infrared imagery for US intelligence agencies.[5]
USA-245 was launched by United Launch Alliance, using a Delta IV Heavy rocket[6] with the flight number Delta 364 and the name Victoria. The launch took place from Space Launch Complex 6 at the Vandenberg Air Force Base at 18:03 UTC (11:03 local time) on 28 August 2013.[7] After deploying its payload, the rocket's upper stage was deorbited after completing one orbit.[2] The launch was the first Delta IV mission to use a new ignition sequence aimed at reducing damage to the first stage insulation caused by igniting a cloud of hydrogen around the vehicle at liftoff. To mitigate this, the rocket's starboard engine was lit two seconds earlier than on previous flights.[8]
References
- ^ a b c d e f g Peat, Chris (8 January 2015). "USA 245 - Orbit". Heavens-Above. Retrieved 25 January 2015.
- ^ a b Graham, William (28 August 2013). "ULA Delta IV-H launches with NROL-65". NASASpaceflight.com. Retrieved 28 August 2013.
- ^ Molczan, Ted (28 August 2013). "RE: NROL-65 search elements". Seesat-L. Retrieved 28 August 2013.
- ^ Langbroek, Marco (28 August 2013). "NROL-65 seen". Seesat-L. Retrieved 28 August 2013.
- ^ Krebs, Gunter. "KH-11 / Kennen / Crystal". Gunter's Space Page. Retrieved 28 August 2013.
- ^ "National Reconnaissance Office Mission Successfully Launches on World's Largest Rocket, the United Launch Alliance Delta IV Heavy". United Launch Alliance. 28 August 2013. Retrieved 28 August 2013.
- ^ Ray, Justin (28 August 2013). "Delta Launch Report - Mission Status Center". Spaceflight Now. Retrieved 28 August 2013.
- ^ Ray, Justin (25 August 2013). "America's largest rocket set for launch Wednesday". Spaceflight Now. Retrieved 28 August 2013.
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