Mission typeEarth observation
COSPAR ID2016-025A Edit this at Wikidata
SATCAT no.41456
WebsiteSentinel-1 (ESA)
Mission durationPlanned: 7 years[1]
Elapsed: 6 years, 3 months, 9 days
Spacecraft properties
Spacecraft typeSentinel-1
ManufacturerThales Alenia Space
Airbus Defence and Space[1]
Launch mass2,164 kg (4,771 lb)
Start of mission
Launch date25 April 2016, 21:02 (2016-04-25UTC21:02) UTC[3]
Launch siteKourou ELS[4]
Orbital parameters
Reference systemGeocentric
RegimeLow Earth
Altitude693 km[5]
Sentinel-1C →

Sentinel-1B is a European radar imaging satellite launched on 25 April 2016. It is the second of two satellites in the Sentinel-1 constellation, part of the European Union's Copernicus programme on Earth observation. The satellite carries a C-SAR sensor, capable of providing high-resolution imagery regardless of weather conditions.

Satellite made its first observation on 28 April, capturing 250 km wide image of Austfonna glacier on Svalbard.[6]

Beginning on December 23, 2021, the spacecraft experienced an anomaly which resulted in a loss of data transmission. On January 10, 2022, the European Space Agency confirmed online that a power issue was the root cause of the issue and that initial attempts to fix it had failed. The agency confirmed that efforts to restore spacecraft capabilities would continue,[7] before announcing on 3 August 2022 that efforts to recover the mission would end.[8]

See also


  1. ^ a b "Facts and figures / Sentinel-1". ESA. Retrieved 28 April 2016.
  2. ^ "Thales Alenia Space flies high at the Space Symposium". Thales Group. 13 April 2015. Retrieved 28 April 2016.
  3. ^ "Sentinel-1B liftoff delayed another 24 hours". ESA. 23 April 2016. Retrieved 28 April 2016.
  4. ^ a b "Sentinel 1A, 1B, 1C, 1D". Gunter's Space Page. Retrieved 28 April 2016.
  5. ^ "ESA - Sentinel-1". Retrieved 18 January 2022.
  6. ^ "Sentinel-1B delivers". ESA. 28 April 2016. Retrieved 28 April 2016.
  7. ^ "Copernicus Sentinel 1-B Anomaly". Copernicus Open Access Hub. 10 January 2022. Retrieved 10 January 2022.
  8. ^ "Mission ends for Copernicus Sentinel-1B satellite". ESA. 3 August 2022. Retrieved 3 August 2022.