Cosmos 2471

Launch data: Designation  37372 / 11009A Launch date  26 Feb 2011 - 03:07 UT Launch site  Plesetsk, LC-43/4 Launch vehicle  Soyuz-2-1B Fregat Mission  Military: Navigation Commercial: Global positioning Satellite type  Uragan-K1 #1 MEO Earth orbit on Mar 2.56: Perigee / Apogee  19128 x 19152 km Eccentricity  0.0005 Inclination  64.77 deg Period  676.15 min

Spacecraft data: Prime contractor  ISS Reshetnev (OAO-ISS) Platform  Ekspress-1000 bus Operator  Ministry of Defense Mass at launch  935 kg Dry Mass   kg Basic shape  Box + 2 panels Dimension (m)   Solar array   Stabilization   DC power   Design lifetime  1 million years (active: 10 yrs)

Glonass-K satellite

Mission details:

• Next generation. Will transmit more navigation signals. Five channels, four in L1 andL2 bands and one for civilian aplications in the L3 band.
• The first Glonass-K satellite was launched on Feb 26, 2011. The Soyuz-2-1B rocket entered an orbit with a perigee of less than 80 km, with reentry over the S Pacific, and deployed the Fregat upper stage whose three burns resulted in 212 x 241 km, 278 x 19145 km and 19279 x 19715 km x 64.8 deg orbit.
• The 935 kg payload, based on ISS Reshetnev's Ekspress-1000 bus, separated into the latter orbit. Earlier Glonass satellites used Reshetnev's Uragan pressurized bus; the new satellite bus is unpressurized and the payload includes both an extra nav signal in the GPS L3 band and a COSPAS-SARSAT search and rescue transponder payload. This first Glonass-K has serial number 11 (Reshentev satellite series always start with 11 - 1 to 10 may be used for ground test articles).