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Mission typeEarth observation
COSPAR ID2013-021B
SATCAT no.39160
Mission duration5 years
Spacecraft properties
ManufacturerEADS Astrium
Launch mass120 kilograms (260 lb)
Start of mission
Launch date7 May 2013, 02:06:31 (2013-05-07UTC02:06:31Z) UTC
RocketVega flight VV02
Launch siteKourou ELA-1
Orbital parameters
Reference systemGeocentric
Perigee altitude690 kilometres (430 mi)[1]
Apogee altitude691 kilometres (429 mi)[1]
Inclination98.16 degrees[1]
Period98.43 minutes[1]
Epoch25 January 2015, 05:27:58 UTC[1]

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]


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]


  1. ^ a b c d e "VNREDSAT 1 Satellite details 2013-021B NORAD 39160". N2YO. 25 January 2015. Retrieved 25 January 2015.
  2. ^ Gunter Dirk Krebs (2012-03-04). "VNREDSat 1a". Gunter's Space Page. Retrieved 2013-01-09.
  3. ^ Tran Manh Tuan. "Space Technology in Vietnam: 2008 Country Report" (PDF). APRSAF. Retrieved 2013-01-07.
  4. ^ "Earth observation optical satellite system for Vietnam". EADS Astrium. 2012-03-08. Retrieved 2013-01-07.
  5. ^ "Arianespace to launch VNREDSat-1A built by Astrium for Vietnam". Arianespace. 2013-01-04. Retrieved 2013-01-07.
  6. ^ Stephen Clark (2013-01-04). "Vietnamese satellite booked for second Vega launch". Spaceflight now. Retrieved 2013-01-09.

This page was last edited on 21 January 2021, at 14:01
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