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  3. Sentinel-1B - Wikipedia
Sentinel-1B - Wikipedia
From Wikipedia, the free encyclopedia
Sentinel-1B
Model of a Sentinel-1 satellite (with radar antenna missing)
Mission typeEarth observation
OperatorESA
COSPAR ID2016-025A Edit this at Wikidata
SATCAT no.41456
WebsiteSentinel-1 (ESA)
Mission durationPlanned: 7 years[1]
Elasped: 6 years, 3 months, 9 days[2]
Spacecraft properties
Spacecraft typeSentinel-1
BusPrima[3]
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[4]
RocketSoyuz-STA/Fregat-M[5]
Launch siteKourou ELS[5]
ContractorArianespace
End of mission
DisposalDecaying orbit
Declared23 December 2021
Deactivated3 August 2022
Orbital parameters
Reference systemGeocentric
RegimeLow Earth
Altitude693 km[6]

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

The satellite made its first observation on 28 April 2016, capturing a 250 kilometres (160 mi) wide image of the Austfonna glacier on Svalbard.[7]

Beginning on 23 December 2021, the spacecraft experienced an anomaly which resulted in a loss of data transmission. On 10 January 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 the spacecraft's capabilities would continue,[8] before announcing on 3 August 2022 that efforts to recover the mission would end. The power issue disabled the use of the satellite's payload, but otherwise the satellite remains operable, thus allowing ESA to perform a controlled deorbit.[9]

Sentinel-1B was placed into a decaying orbit in April 2024.[10] It will reenter the atmosphere within 25 years.

See also

References

  1. ^ a b "Facts and figures / Sentinel-1". ESA. Retrieved 28 April 2016.
  2. ^ "End of mission of the Copernicus Sentinel-1B satellite". ESA. Retrieved 28 May 2023.{{cite web}}: CS1 maint: deprecated archival service (link)
  3. ^ "Thales Alenia Space flies high at the Space Symposium". Thales Group. 13 April 2015. Retrieved 28 April 2016.
  4. ^ "Sentinel-1B liftoff delayed another 24 hours". ESA. 23 April 2016. Retrieved 28 April 2016.
  5. ^ a b "Sentinel 1A, 1B, 1C, 1D". Gunter's Space Page. Retrieved 28 April 2016.
  6. ^ "ESA - Sentinel-1". Retrieved 18 January 2022.
  7. ^ "Sentinel-1B delivers". ESA. 28 April 2016. Retrieved 28 April 2016.
  8. ^ "Copernicus Sentinel 1-B Anomaly". Copernicus Open Access Hub. 10 January 2022. Archived from the original on 10 January 2022. Retrieved 10 January 2022.
  9. ^ "Mission ends for Copernicus Sentinel-1B satellite". ESA. 3 August 2022. Retrieved 3 August 2022.
  10. ^ "Sentinel-1B journeys back to Earth".

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