Sentinel-1

Sentinel-1
Model of a Sentinel-1 (radar antenna missing)
Manufacturer
OperatorEuropean Space Agency
ApplicationsLand and sea monitoring, natural disasters mapping, sea ice observations, ships detection
Specifications
Spacecraft typeSatellite
ConstellationActive: 1
Launch mass2,300 kg (5,100 lb)
Dry mass2,170 kg (4,780 lb)
Dimensions3.9 m × 2.6 m × 2.5 m (13 ft × 8.5 ft × 8.2 ft)
Power5.9 kilowatts (5,900 W)[2]
Batteries324 Ah
Design life7 years (12 years of consumables)
Production
StatusActive
On order4
Built4
Launched2
Operational1
Retired1
Maiden launchSentinel-1A (3 April 2014)[3]
Last launchSentinel-1B (25 April 2016)
Related spacecraft
Subsatellite ofCopernicus Programme
Sentinel-2

Sentinel-1 is the first of the Copernicus Programme satellite constellations conducted by the European Space Agency.[4] The mission was originally composed of a constellation of two satellites, Sentinel-1A and Sentinel-1B, which shared the same orbital plane. Two more satellites, Sentinel-1C and Sentinel-1D are in development. Sentinel-1B was retired following a power supply issue on December 23, 2021, leaving Sentinel-1A the only satellite of the constellation currently operating.[5] Sentinel-1C is currently planned to launch in the final quarter of 2024.[6]

  1. ^ "Sentinel 1". Earth Online. European Space Agency. Archived from the original on 2 March 2014. Retrieved 17 August 2014.
  2. ^ "Sentinel 1 Datasheet" (PDF). ESA. August 2013. Retrieved 17 August 2014.
  3. ^ "Earth Online – Sentinel 1". European Space Agency. Archived from the original on 2 March 2014. Retrieved 3 April 2014.
  4. ^ "Sentinel-1". Sentinel Online. European Space Agency. Retrieved 21 March 2018.
  5. ^ "Mission ends for Copernicus Sentinel-1B satellite". The European Space Agency.
  6. ^ "Sentinel-1C". University of Twente.