Sentinel-2A

Sentinel-2A
Model of a Sentinel 2 satellite
Mission typeEarth observation
OperatorESA
COSPAR ID2015-028A Edit this at Wikidata
SATCAT no.40697
WebsiteSentinel-2 (ESA)
Mission durationPlanned: 7 years[1]
Elapsed: 10 years, 11 months, 14 days
Spacecraft properties
Spacecraft typeSentinel-2
ManufacturerAirbus Defence and Space
Launch mass1,140 kg (2,510 lb)
Dry mass1,017 kg (2,242 lb)
Dimensions3.4 m × 1.8 m × 2.35 m (11.2 ft × 5.9 ft × 7.7 ft)
Power1700 watts
Start of mission
Launch date23 June 2015, 01:51:58 (2015-06-23UTC01:51:58) UTC[2]
RocketVega (VV05)
Launch siteKourou SLV
ContractorArianespace
Orbital parameters
Reference systemGeocentric
RegimeLow Earth
Semi-major axis7,167.10 km (4,453.43 mi)
Eccentricity0.000127
Perigee altitude788.06 km (489.68 mi)
Apogee altitude789.87 km (490.80 mi)
Inclination98.5623°
Period100.65 minutes
Epoch9 March 2017, 21:05:23 UTC[3]
Transponders
BandS band (TT&C support)
X band and optical laser through EDRS (data acquisition)
Bandwidth64 kbit/s upload (S band)
128 kbit/s - 2 Mbit/s down (S band)
520 Mbit/s down (X band/Optical)
Instruments
Multi-Spectral Imager (MSI)

Sentinel-2A is a European optical imaging satellite launched in 2015. It is the first Sentinel-2 satellite launched by the European Space Agency's and this Sentinel is part of the European Commission's Copernicus Programme. The satellite carries a wide swath high-resolution multispectral imager with 13 spectral bands. Its observations support services such as forest monitoring, land cover change-detection, natural disaster management and water quality monitoring.[4] On 7 March 2017 the Sentinel-2A was joined in orbit by its sister satellite, Sentinel-2B.

Mission history

Launch

Sentinel-2A was launched by the Vega VV05 rocket on 23 June 2015 at 01:52 UTC. The satellite separated from the upper stage 54 min 43 s after liftoff.[5]

Flight controllers at ESA's ESOC celebrating end of LEOP for Sentinel-2A

Orbital operation

The satellite captured its first image 100 hours after launch, covering a 290 km (180 mi) wide swath from Sweden through Central Europe to Algeria.[6][7]: 8  Commissioning occurred in October 2015.[7]: 8 

Between 20 and 23 January 2017 the spacecraft suffered a mission planning anomaly which resulted in loss of data from its instrument, the Multi-Spectral Imager.[8]

  • Sentinel 2A's descending orbital path
    Sentinel 2A's descending orbital path

In December 2025, Sentinel-2A performed experimental night observations, something it was not designed to do, in order to test these operations for the follow-on Sentinel-2 Next Generation mission. The satellite successfully captured night-time images of gas flares from oil production in the Middle East, wildfires in India, and fishing boats off the coast of South Korea.[9][10]

Wildfire in India imaged by Sentinel-2A at night

References

  1. ^ "Sentinel-2: The Operational Compernicus Optical High Resolution Land Mission" (PDF). European Space Agency. 2013. Retrieved 23 June 2015.
  2. ^ "Second Copernicus environmental satellite safely in orbit". European Space Agency. 23 June 2015. Retrieved 24 June 2015.
  3. ^ "Sentinel 2A - Orbit". Heavens-Above. 9 March 2017. Retrieved 9 March 2017.
  4. ^ Justice, Adam (23 June 2015). "Sentinel-2A: Satellite blasts off to provide new, improved view of Earth". International Business Times. Retrieved 24 June 2015.
  5. ^ Chris Bergin (22 June 2015). "Vega successfully launches Sentinel-2A mission". nasaspaceflight.com. Retrieved 19 March 2023.
  6. ^ "Sentinel-2 delivers first images". European Space Agency. 29 June 2015. Retrieved 1 February 2017.
  7. ^ a b Hoersch, Bianca (2015). A short success story of Sentinel-2A (PDF). Meeting of the Earth Observation Programme Board. 22–23 September 2015. ESRIN, Frascati, Italy. Archived from the original (PDF) on 1 December 2017. Retrieved 1 February 2017.
  8. ^ "Loss of Sentinel-2A acquisitions between 20 and 23 January 2017". European Space Agency. 23 January 2017. Retrieved 1 February 2017.
  9. ^ "Sentinel-2 explores night vision". www.esa.int. Retrieved 19 January 2026.
  10. ^ Enthusiast, Space (18 January 2026). "ESA Switches on Night-Time Imaging for Sentinel-2A Copernicus Satellite [PHOTOS]". Orbital Today. Retrieved 19 January 2026.

Content Disclaimer

Informasi ini disarikan dari Wikipedia dan disajikan kembali untuk tujuan edukasi. Konten tersedia di bawah lisensi CC BY-SA 3.0. Kami tidak bertanggung jawab atas ketidakakuratan data yang bersumber dari kontribusi publik tersebut.

  1. The information displayed on this website is sourced in part or in whole from Wikipedia and has been adapted for the purpose of restating it. We strive to provide accurate and relevant information, however:
  2. There is no guarantee of absolute accuracy. Wikipedia is an open, collaborative project that can be edited by anyone, so information is subject to change.
  3. It is not intended to constitute professional advice. The content displayed is for informational and educational purposes only. For important decisions (e.g., medical, legal, or financial), please consult a professional.
  4. Content copyright. Wikipedia is licensed under the Creative Commons Attribution-ShareAlike License (CC BY-SA). This means that content may be reused with appropriate attribution and shared under a similar license.
  5. Responsible use. Any risk arising from the use of information from this website is entirely the responsibility of the user.