Sentinel-1A
 Model of a Sentinel-1 satellite (radar antenna missing) | |
| Mission type | Earth observation |
|---|---|
| Operator | ESA |
| COSPAR ID | 2014-016A |
| SATCAT no. | 39634 |
| Website | Sentinel-1 (ESA) |
| Mission duration | Planned: 7 years Elapsed: 12 years, 2 months, 26 days |
| Spacecraft properties | |
| Spacecraft type | Sentinel-1 |
| Bus | Prima |
| Manufacturer | Thales Alenia Space EADS Astrium |
| Launch mass | 2,300 kg (5,100 lb) |
| Dry mass | 2,170 kg (4,780 lb) |
| Dimensions | 3.4 m × 1.3 m (11.2 ft × 4.3 ft) |
| Power | 5900 watts |
| Start of mission | |
| Launch date | 3 April 2014, 21:02:31 UTC |
| Rocket | Soyuz-STA/Fregat |
| Launch site | Kourou ELS |
| Contractor | Arianespace |
| End of mission | |
| Declared | 30 June 2026 |
| Orbital parameters | |
| Reference system | Geocentric |
| Regime | Sun-synchronous |
| Apogee altitude | 693 km (431 mi) |
| Inclination | 98.18 degrees |
| Period | 98.6 minutes |
| Repeat interval | 12 days |
| Epoch | planned |
| Transponders | |
| Band | S Band (TT&C support) X Band and Optical laser through EDRS (data acquisition) |
| Bandwidth | 64 kbit/s upload (S Band) 128 kbit/s – 2 Mbit/s down (S Band) 520 Mbit/s down (X Band/Optical) |
Sentinel-1A is a European radar imaging satellite launched in 2014 and decommissioned in 2026. It is the first Sentinel-1 satellite launched as part of the European Union's Copernicus programme. The satellite carries a C-band Synthetic Aperture Radar which provided images in all light and weather conditions. It analyzed many phenomena occurring on Earth, from detecting and tracking oil spills and mapping sea ice to monitoring movement in land surfaces and mapping changes in the way land is used.