| Mission type | Navigation |
|---|---|
| COSPAR ID | 2010-001A |
| SATCAT no. | 36287 |
| Spacecraft properties | |
| Bus | DFH-3 |
| Manufacturer | CAST |
| Start of mission | |
| Launch date | 16 January 2010, 16:12:04 UTC |
| Rocket | Chang Zheng 3C |
| Launch site | Xichang LC-2 |
| Orbital parameters | |
| Reference system | Geocentric |
| Regime | Geosynchronous |
| Perigee altitude | 35,775 kilometres (22,230 mi) |
| Apogee altitude | 35,807 kilometres (22,249 mi) |
| Inclination | 1.58 degrees |
| Period | 23.93 hours |
| Epoch | 24 December 2013, 10:17:46 UTC [1] |
Compass-G1, also known as Beidou-2 G1, is a Chinese navigation satellite which will become part of the Compass navigation system. It was launched in January 2010, and became the third Compass satellite to be launched after Compass-M1 and Compass-G2.
Compass-G1 was launched at 16:12 GMT on 16 January 2010, [2] and was the first orbital launch to be conducted in 2010. [3] The launch used a Long March 3C carrier rocket, flying from the Xichang Satellite Launch Centre. It was the first flight of a Long March 3 series rocket since an upper stage engine problem in August 2009 which left the Palapa-D satellite in a lower than planned orbit. [4] The injection systems on the rocket's third stage engines had filters fitted to them in an attempt to prevent a recurrence of this failure. The Compass-G1 launch demonstrated this new system. [5]
Compass-G1 had originally been scheduled for launch in the first half of 2009, however it was subsequently delayed after issues developed with the Beidou-1D [6] [7] and Compass-G2 satellites. [8]
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GPS Block IIF, or GPS IIF is an interim class of GPS (satellite), which are used to keep the Navstar Global Positioning System operational until the GPS Block IIIA satellites become operational. They were built by Boeing, to be operated by the United States Air Force being launched by United Launch Alliance (ULA), using Evolved Expendable Launch Vehicles (EELV). They are the final component of the Block II GPS constellation to be launched. On 5 February 2016, the final satellite in the GPS Block IIF was successfully launched, completing the block.
Compass-IGSO1, also known as Beidou-2 IGSO1 is a Chinese navigation satellite which will become part of the Compass navigation system. It was launched in July 2010, and became the fifth Compass satellite to be launched after Compass-M1, G2, G1, and G3.
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