USA-273

USA-273, also known as SBIRS-GEO 3, is an American military satellite and part of the Space-Based Infrared System. It was launched on January 21, 2017 from Cape Canaveral, atop an Atlas V rocket.

USA-273
Spacecraft properties
Launch of USA-273 on an Atlas V.

Mission type	Infrared early warning IRINT
Operator	United States Air Force
COSPAR ID	2017-004A
SATCAT no.	41937


Spacecraft type	SBIRS-GEO
Bus	A2100M
Manufacturer	Lockheed Martin


Start of mission
Launch date	21 January 2017, 00:42 (2017-01-21UTC00:42Z) UTC[1]
Rocket	Atlas V 401 AV-066[1]
Launch site	Cape Canaveral, SLC-41
Contractor	ULA


Orbital parameters
Reference system	Geocentric
Regime	GEO

Overview

The SBIRS satellites are a replacement for the Defense Support Program early warning system. They are intended to detect ballistic missile launches, as well as various other events in the infrared spectrum, including nuclear explosions, aircraft flights, space object entries and reentries, wildfires and spacecraft launches.

SBIRS-GEO 3 was manufactured by Lockheed Martin and is built upon the A2100M satellite bus.

References

Ray, Justin (21 January 2017). "Atlas 5 rocket successfully delivers vital national asset into space". Spaceflight Now. Retrieved 21 January 2017.

External links

SBIRS-GEO 1, 2, 3, 4, 5, 6 at Gunter's Space Page

← 2016 · Orbital launches in 2017 · 2018 →
January	TJS-2 – Lingqiao / Jilin-1 03 · Caton-1 · Xingyun Shiyan 1 – Iridium NEXT 1–10 – TRICOM-1 – USA-273 / SBIRS GEO-3 – DSN-2 – Hispasat AG1
February	Intelsat 32e / SkyBrasil-1 · Telkom-3S – Cartosat-2D · INS-1A, 1B · Flock-3p × 88 · Lemur-2 × 8 · Al Farabi-1 · BGUSAT · DIDO-2 · Nayif 1 · PEASS – Dragon CRS-10 – Progress MS-05
March	USA-274 / NROL-79 / Intruder 8 – Tiankun-1 – Sentinel-2B – EchoStar 23 – IGS-Radar 5 – USA-275 / WGS-9 – SES-10
April	Shijian 13 – Cygnus CRS OA-7 – Soyuz MS-04 – Tianzhou 1 · SilkRoad-1
May	USA-276 / NROL-76 – Koreasat 7 · SGDC-1 – GSAT 9 / South Asia Satellite – Inmarsat-5 F4 – SES-15 – "It's a Test" – EKS-2
June	QZS-2 – ViaSat-2 · Eutelsat 172B – Dragon CRS-11 · NICER · Birds-1 (TOKI · GhanaSat-1 · Mazaalai · BRAC Onnesha · Nigeria EduSat-1) – GSAT-19 – EchoStar 21 – Progress MS-06 – HXMT / Insight · Zhuhai-1 01, 02 · ÑuSat 3 – ChinaSat 9A – Cartosat-2E · Aalto-1 · ROBUSTA-1B · Max Valier Sat – Nivelir-ZU (14F150) – BulgariaSat-1 – Iridium NEXT-2 – EuropaSat/Hellas Sat 3 · GSAT-17
July	Shijian-18 – Intelsat 35e – Kanopus-V-IK · CICERO × 3 · Corvus-BC × 2 · Ecuador-UTE-YuZGU · Flock-2k × 48 · Flying Laptop · Iskra-MAI-85 · Lemur-2 × 8 · MKA-N × 2 · Mayak · NORSAT-1, -2 · NanoACE · TechnoSat · WNISAT-1R – Soyuz MS-05
August	OPTSAT-3000 · VENµS – Dragon CRS-12 · ASTERIA – Blagovest 11L – TDRS-M – Michibiki 3 – Formosat-5 – ORS-5 – IRNSS-1H
September	USA-277 / OTV-5 – Amazonas 5 – Soyuz MS-06 – Kosmos 2522 / GLONASS-M 752 – USA-278 / NROL-42 – AsiaSat 9 – Yaogan-30-01 × 3 – Intelsat 37e · BSAT-4a
October	VRSS-2 – Iridium NEXT 21–30 – QZS-4 – SES-11 / EchoStar 105 – Sentinel-5 Precursor – Progress MS-07 – USA-279 / NROL-52 / Quasar 21 – Koreasat 5A – SkySat × 6 · Flock-3m × 4
November	BeiDou-3 M1 · M2 – Mohammed VI-A – Cygnus CRS OA-8E · Asgardia-1 – Fengyun-3D · HEAD-1 – NOAA-20 – Jilin-1 × 3 – Yaogan-30-02 × 3 – Meteor-M No.2-1
December	Kosmos 2524 – LKW-1 – Alcomsat-1 – Galileo FOC 15-18 – Dragon CRS-13 – Soyuz MS-07 – GCOM-C · SLATS – Iridium NEXT 31–40 – Yaogan-30-03 × 3 – AngoSat 1
Launches are separated by dashes ( – ), payloads by dots ( · ), multiple names for the same satellite by slashes ( / ). CubeSats are smaller. Crewed flights are bolded. Launch failures are in italics. Payloads deployed from other spacecraft are (enclosed in brackets).

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