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]

VNREDSat 1A

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 (2013-05-07UTC02:06:31Z) 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]

Satellite

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]

Launch

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]

References

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