NamesSBIRS GEO-1 (SV-1)
Space-Based Infrared System GEOstationary-1 [1]
Mission typeInfrared early warning
OperatorUnited States Air Force / United States Space Force
COSPAR ID2011-019A Edit this at Wikidata
SATCAT no.37481
Mission duration12 years (planned)
13 years and 11 days (in progress)
Spacecraft properties
SpacecraftSBIRS GEO-1
Spacecraft typeSBIRS GEO
ManufacturerLockheed Martin Space
Launch mass4,500 kg (9,900 lb)
Dimensions15 m x 6.7 m x 6.1 m
Start of mission
Launch date7 May 2011, 18:10 UTC
RocketAtlas V 401 (AV-022) [2]
Launch siteCape Canaveral, SLC-41
ContractorUnited Launch Alliance
Orbital parameters
Reference systemGeocentric orbit
RegimeGeostationary orbit

USA-230, also known as SBIRS GEO-1,[1] is a United States military satellite and part of the Space-Based Infrared System.


SBIRS GEO-1 in orbit

In the mid 1950s, the United States began development of the first space-based missile detection system; the Missile Defense Alarm System (MIDAS), in low Earth orbit. Following the end of the MIDAS programme, plans to deploy an operational system led to the Integrated Missile Early Warning Satellite programme (IMEWS), followed by the Defense Support Program (DSP),

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.

Satellite description

SBIRS-GEO 1 was manufactured by Lockheed Martin Space and is built upon the A2100M satellite bus.


SBIRS GEO-1 was launched on 7 May 2011 from Cape Canaveral (CCAFS), atop an Atlas V 401 (AV-022) launch vehicle.[2][3]


  1. ^ a b "SBIRS GEO-1, -2, -3, -4". Gunter's Space Page. 4 November 2020. Retrieved 16 May 2021.
  2. ^ a b "Atlas V launches with SBIRS GEO-1 at second attempt". 7 May 2011. Retrieved 16 May 2021.
  3. ^ "SBIRS GEO-1 Mission Status Center". Spaceflight Now. 7 May 2011. Retrieved 16 May 2021.