Sentinel-1
Model of a Sentinel-1 (radar antenna missing) | |||
| Manufacturer |
| ||
|---|---|---|---|
| Operator | European Space Agency | ||
| Applications | Land and sea monitoring, natural disasters mapping, sea ice observations, ships detection | ||
| Specifications | |||
| Spacecraft type | Satellite | ||
| Constellation | Active: 2 | ||
| Launch mass | 2,300 kg (5,100 lb) | ||
| Dry mass | 2,170 kg (4,780 lb) | ||
| Dimensions | 3.9 m × 2.6 m × 2.5 m (13 ft × 8.5 ft × 8.2 ft) | ||
| Power | 5.9 kilowatts (5,900 W) | ||
| Batteries | 324 Ah | ||
| Design life | 7 years (12 years of consumables) | ||
| Production | |||
| Status | Active | ||
| On order | 4 | ||
| Built | 4 | ||
| Launched | 3 | ||
| Operational | 2 | ||
| Retired | 1 | ||
| Maiden launch | Sentinel-1A (3 April 2014) | ||
| Last launch | Sentinel-1C (5 December 2024) | ||
| Related spacecraft | |||
| Subsatellite of | Copernicus Programme | ||
| |||
Sentinel-1 is the first of the Copernicus Programme satellite constellations conducted by the European Space Agency. The mission was originally composed of a constellation of two satellites, Sentinel-1A and Sentinel-1B, which shared the same orbital plane. Sentinel-1B was retired following a power supply issue on December 23, 2021, leaving Sentinel-1A the only satellite of the constellation currently operating. Sentinel-1C has been successfully launched on 5 December 2024, 21:20 UTC, and is still ongoing in-orbit commissioning before becoming fully operational. Sentinel-1D is in development and its launch is planned for 2025.