Sentinel-1B

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.

Sentinel-1B
Mission typeEarth observation
OperatorESA
COSPAR ID2016-025A
SATCAT no.41456
WebsiteSentinel-1 (ESA)
Mission durationPlanned: 7 years[1]
Elapsed: 5 years, 11 months, 21 days
Spacecraft properties
Spacecraft typeSentinel-1
BusPrima[2]
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]
RocketSoyuz-STA/Fregat-M[4]
Launch siteKourou ELS[4]
ContractorArianespace
Orbital parameters
Reference systemGeocentric
RegimeLow Earth
Altitude693 km[5]
 

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]

See also

References
  1. "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. "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.

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