|Mission type||Earth observation|
|Launch vehicle||Vega or Soyuz|
|Launch site||Kourou, French Guiana|
|Orbital period||~96 minutes|
Sentinel-1 is a future space mission from ESA of GMES program, consisting of a constellation of two satellites. The payload of Sentinel-1 is a Synthetic Aperture Radar in C-band which provides continuous imagery (day, night and all weather).
On 12 March 2010, the European Space Agency and Thales Alenia Space signed a contract worth €270 million to build the second satellite of the Sentinel-1 pair.
A launch date in 2013 is foreseen.
Mission characteristics 
- Role: Earth Observation
- Launch date: 2013
- Launch mass: ~2300 kg
- Launcher: Vega or Soyuz
- Launch location: Kourou, French Guiana
- Orbit: Sun-synchronous dawn-dusk
- Altitude: 693 km
- Orbit cycle: ~96 minutes
- Nominal duration: 7.25 years
A summary of applications are:
- Monitoring sea ice zones and the Arctic environment, and surveillance of marine environment.
- Monitoring land surface motion risks
- Mapping of land surfaces: forest, water and soil
- Mapping in support of humanitarian aid in crisis situations