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VNREDSat-1 (short for Vietnam Natural Resources, Environment and Disaster Monitoring Satellite, also VNREDSat-1A)[2] is the first optical Earth Observing satellite of Vietnam; its primary mission is to monitor and study the effects of climate change, predict and take measures to prevent natural disasters, and optimise the management of Vietnam's natural resources.[3]
| Mission type | Earth observation |
|---|---|
| Operator | VAST |
| COSPAR ID | 2013-021B |
| SATCAT no. | 39160 |
| Mission duration | 5 years |
| Spacecraft properties | |
| Manufacturer | EADS Astrium |
| Launch mass | 120 kilograms (260 lb) |
| Start of mission | |
| Launch date | 7 May 2013, 02:06:31 UTC |
| Rocket | Vega flight VV02 |
| Launch site | Kourou ELA-1 |
| Contractor | Arianespace |
| Orbital parameters | |
| Reference system | Geocentric |
| Regime | Sun-synchronous |
| Perigee altitude | 690 kilometres (430 mi)[1] |
| Apogee altitude | 691 kilometres (429 mi)[1] |
| Inclination | 98.16 degrees[1] |
| Period | 98.43 minutes[1] |
| Epoch | 25 January 2015, 05:27:58 UTC[1] |
The VNREDSat-1 was built in Toulouse by EADS Astrium. During the project 15 Vietnamese engineers were integrated and trained by the Astrium team. The VNREDSat-1 system is based on the Astrium operational AstroSat100 satellite, used for the SSOT programme developed with Chile or the ALSAT-2 satellite system developed with Algeria. The 120 kg satellite will image at 2.5 m in panchromatic mode and 10 m in multi-spectral mode (four bands) with a 17.5 km swath, and will orbit at 600–700 km in a Sun-synchronous orbit.[4]
The satellite was launched from ELV at the Guiana Space Centre by the Vega VV02 rocket at 02:06:31 UTC on 7 May 2013 together with the PROBA-V and ESTCube-1 satellites.[5][6]
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