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USA-229

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USA-229
Spacecraft properties
Names	NROL-34 NRO Launch 34 NOSS-3 5A and 5B Intruder 9A and 9B

Mission type	SIGINT
Operator	United States NRO
COSPAR ID	2011-014A
SATCAT no.	37386 and 37391


Spacecraft	NOSS-3 5 (3rd Generation)
Spacecraft type	Intruder
Bus	NOSS-3
Manufacturer	Lockheed Martin
Launch mass	3250 kg (each)


Start of mission
Launch date	15 April 2011, at 04:24 UTC
Rocket	Atlas V 411 (AV-027)
Launch site	Vandenberg, SLC-3E
Contractor	ULA


Orbital parameters
Reference system	Geocentric orbit
Regime	Low Earth orbit
Perigee altitude	1015 km
Apogee altitude	1207 km
Inclination	63.46° ^[1]

Naval Ocean Surveillance System ← USA-194 USA-238 →

USA-229, known before launch as NRO Launch 34 (NROL-34), is a pair of American signals intelligence satellites which were launched in 2011. They are operated by the United States National Reconnaissance Office.

Both satellites were deployed by a United Launch Alliance Atlas V 411 launch vehicle, which launched from SLC-3E at the Vandenberg Air Force Base. The launch occurred at 04:24 UTC on 15 April 2011.^[2] The rocket placed the satellites into a low Earth orbit. By 04:29 UTC, official updates on the status of the spacecraft had been discontinued.^[3]

Whilst details of the satellites and their missions are officially classified, amateur observers have identified that the Atlas V deployed two satellites, one of which has officially been catalogued as debris. The two spacecraft have been identified as being a pair of third or fourth generation Naval Ocean Surveillance System satellites.^[4] Amateur observations have located the spacecraft in an orbit with a perigee of 1,015 kilometres (631 mi) and an apogee of 1,207 kilometres (750 mi), inclined at 63.46° to the plane of the equator.^[2] Current generation NOSS satellites are always launched and operated in pairs,^[5] and are used to locate and track ships and aircraft from the radio transmissions that they emit.^[6]

References[edit]

^ Molczan, Ted (24 April 2011). "NROL-34: NOSS 3-5 elements". SatObs.

^ ^a ^b McDowell, Jonathan. "Issue 640". Jonathan's Space Report. Retrieved 24 April 2011.

^ Ray, Justin. "Mission Status Center". Spaceflight Now. Retrieved 24 April 2011.

^ Ted, Molczan (17 April 2011). "NROL-34 - NOSS 3-5 pair spotted tonight from Austin, Texas". Satobs. Retrieved 24 April 2011.

^ Krebs, Gunter. "NOSS-3". Gunter's Space Page. Retrieved 24 April 2011.

^ Ray, Justin (18 April 2011). "Observers confirm identity of last week's Atlas payload". Spaceflight Now. Retrieved 24 April 2011.

National Reconnaissance Office satellite launches

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L-20
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L-22
L-23
L-24
L-25
L-26
L-27
L-28
L-29
L-30
L-31
L-32
L-33
L-34
L-35
L-36
L-37
L-38
L-39
L-40
L-41
L-42
...
L-45
L-47
L-49
L-55
L-61
L-65
L-66
L-67
L-79

v t e ← 2010 Orbital launches in 2011 2012 →
January	Elektro-L No.1 USA-224 Kounotori 2 Progress M-09M (Kedr)
February	Kosmos 2470 USA-225 Johannes Kepler ATV STS-133 (Leonardo) Kosmos 2471
March	Glory, Explorer-1 [Prime], KySat-1, Hermes USA-226 USA-227
April	Soyuz TMA-21 Compass-IGSO3 USA-229 Resourcesat-2, YouthSat, X-Sat Yahsat 1A, New Dawn Progress M-10M
May	Meridian 4 USA-230 STS-134 (AMS-02, ELC-3) Telstar 14R ST-2, GSAT-8 / INSAT-4G
June	Soyuz TMA-02M SAC-D Rasad 1 ChinaSat 10 Progress M-11M Kosmos 2472 USA-231
July	Shijian XI-03 STS-135 (Raffaello, PSSC-2) Tianlian I-02 Globalstar M083, Globalstar M088, Globalstar M091, Globalstar M085, Globalstar M081, Globalstar M089 GSAT-12 SES-3, KazSat-2 USA-232 Spektr-R Compass-IGSO4 Shijian XI-02
August	Juno Astra 1N, BSAT-3c/JCSAT-110R Paksat-1R Hai Yang 2A Sich 2, NigeriaSat-2, NigeriaSat-X, RASAT, EduSAT, AprizeSat-5, AprizeSat-6, BPA-2 Ekspress-AM4 Shijian XI-04 Progress M-12M
September	GRAIL-A , GRAIL-B Zhongxing-1A Kosmos 2473 Arabsat 5C, SES-2 IGS Optical 4 Atlantic Bird 7 TacSat-4 Tiangong-1 QuetzSat 1
October	Kosmos 2474 / GLONASS-M 742 Intelsat 18 Eutelsat 16A Megha-Tropiques, SRMSAT, VesselSat-1, Jugnu ViaSat-1 Galileo-IOV FM1 , Galileo-IOV FM2 NPP, AubieSat-1, DICE-1, DICE-2, M-Cubed, RAX-2 Progress M-13M Shenzhou 8
November	Kosmos 2475 , Kosmos 2476 , Kosmos 2477 Fobos-Grunt , Yinghuo-1 Yaogan 12 , Tian Xun-1 Soyuz TMA-22 Shiyan Weixing 4 , Chuang Xin 1C AsiaSat 7 Mars Science Laboratory (Curiosity) Kosmos 2478 Yaogan 13
December	Compass-IGSO5 Amos-5, Luch 5A IGS Radar 3 Pléiades-HR 1A, SSOT, ELISA 1, ELISA 2, ELISA 3, ELISA 4 NigComSat-1R Soyuz TMA-03M Ziyuan-1C Meridian 5 Globalstar M080, Globalstar M082, Globalstar M084, Globalstar M086, Globalstar M090, Globalstar M092
Launches are separated by dots ( • ), payloads by commas ( , ), multiple names for the same satellite by slashes ( / ). Crewed flights are underlined. Launch failures are marked with the † sign. Payloads deployed from other spacecraft are (enclosed in parentheses).

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Retrieved from "https://en.wikipedia.org/w/index.php?title=USA-229&oldid=986343188" Categories: ●Spacecraft launched in 2011 ●Spacecraft launched by Atlas rockets ●USA satellites ●United States spacecraft stubs Hidden category: ●All stub articles ●This page was last edited on 31 October 2020, at 07:45 (UTC). ●Text is available under the Creative Commons Attribution-ShareAlike License 4.0; additional terms may apply. By using this site, you agree to the Terms of Use and Privacy Policy. Wikipedia® is a registered trademark of the Wikimedia Foundation, Inc., a non-profit organization. ●Privacy policy ●About Wikipedia ●Disclaimers ●Contact Wikipedia ●Code of Conduct ●Developers ●Statistics ●Cookie statement ●Mobile view