Navstar 2R-11

USA

Spacecraft n°:

USA satellite n°:

Also called USA 177, GPS 59 or Navstar-59
GPS= Global Positioning System)

Launch data:

Designation	28190 / 04009A
Launch date	20 Mar 2004 - 17:53 UT
Launch site	CC, SLC17B
Launch vehicle	Delta 7925-9.5 (D303)
Mission	Navigation
Geostationary orbit on 23 Mar:
Perigee / Apogee	20090 / 20276 km
Inclination	55,07°
Period	718,02 min

Spacecraft data:

Prime contractor	Lockheed Martin
Customer
Platform	AS-4000
Mass at launch	2032 kg
Dry Mass	980 kg
Basic shape
Dimension
Solar array
Stabilization
DC power	1136 W
Design lifetime	10 years

Eleventh Navstar Block 2R satellite in the Global Positioning System.
Mass on-station at the beginning of operations is 1075 kg. Launched into Plane C of the constellation.

GPS frequencies

Military: 1227.6 MHz
Civilian: 1575.42 MHz
Nuclear burst detection: 1381.05 MHz

Telemetry on 2227.5 MHz.

Mission details:

Riding atop Boeing's workhorse Delta 2 rocket, the GPS 2R-11 spacecraft is scheduled for liftoff at 12:39 p.m. EST (1739 GMT) from Cape Canaveral, Florida.
The Delta second stage reached a 174 x 200 km orbit at 1803 UTC; after its second burn the third stage separated at 1857 UTC and fired to enter an elliptical transfer orbit. The GPS satellite separated from the third stage at 1901 UTC, followed two seconds later by a `yo weight', a small weight attached to a 1-meter cable which unwinds from the spinning PAM-D stage and whose departing angular momentum is used to tumble the stage and make sure that residual thrust doesn't cause it to hit the payload.

Ref.: #3(SD381), #7(JR523), #12, #14, #102 - update: 25.12.12