SBIRS GEO-2 is a military satellite which will bolster and upgrade the U.S. military's infrared surveillance system that continuously scans the world looking for enemy missile launches and
sounding the alarm to fight back against an incoming threat.
The spacecraft was shipped to the Florida spaceport aboard a C-5 aircraft from Lockheed Martin's Sunnyvale, Calif.,
factory on Jan. 11, 2013. It has been undergoing final testing in preparation for fueling and encapsulation in the rocket's nose cone. The craft will be delivered to the VIF for mating atop the Centaur in early March.
The second geostationary satellite in the Space-Based Infrared System was launched into geostationary transfer
orbit on Mar 19, 2013 on Atlas V flight AV-037. The SBIRS GEO satellites are built by Lockheed Martin and probably have
a mass of around 4500 kg. SBIRS carries two infrared telescopes, one with a staring sensor and one scanning. The SBIRS
system also includes secondary payloads on NRO elliptical orbit (HEO) satellites.
Parking orbit of about 174 x 1060 km x 26.7 deg was reached at 2136 UTC; GTO of 182 x 35804 km x 22.2 deg at 2149 UTC;
and the Centaur separated at 2204 UTC to let SBIRS begin its independent climb to GEO altitude.