|Mission type||Radar imaging|
|Start of mission|
|Launch date||3 April 2012, 23:12:57UTC|
|Rocket||Delta IV-M+(5,2) D359|
|Launch site||Vandenberg SLC-6|
|Regime||Low Earth (retrograde)|
|Perigee||1,106 kilometres (687 mi)|
|Apogee||1,115 kilometres (693 mi)|
|Epoch||18 August 2014, 22:21:31 UTC|
USA-234, also known as NRO Launch 25 or NROL-25, is an American reconnaissance satellite, operated by the National Reconnaissance Office. Launched from Vandenberg Air Force Base in 2012, it has been identified as the second radar imaging satellite to be launched as part of the Future Imagery Architecture programme.
USA-234 was launched by United Launch Alliance, using a Delta IV carrier rocket, making its first flight in the Medium+(5,2) configuration. The rocket was launched from Space Launch Complex 6 at Vandenberg, at 23:12:57 UTC (16:12 PDT) on 3 April 2012. It was identified as NRO Launch 25, and was the nineteenth flight of a Delta IV; the vehicle was designated Delta 359, and named Electra.
- Peat, Chris (18 August 2014). "USA 234 - Orbit". Heavens-Above. Retrieved 23 August 2014.
- Krebs, Gunter. "FIA-Radar 1, 2, 3, 4". Gunter's Space Page.
- Ray, Justin (28 March 2012). "Delta 4 poised for one last 'first flight' milestone". Spaceflight Now. Retrieved 9 April 2012.
- Ray, Justin (4 April 2012). "Delta 4 rocket successfully lofts surveillance satellite". Spaceflight Now. Retrieved 9 April 2012.
- Krebs, Gunter. "NROL launches". Gunter's Space Page.
- Molczan, Ted (6 April 2012). "NROL-25: search TLE update". Seesat. Retrieved 9 April 2012.
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