Engineering:Sentinel-2A

From HandWiki
Revision as of 14:51, 25 June 2023 by Jworkorg (talk | contribs) (url)
(diff) ← Older revision | Latest revision (diff) | Newer revision → (diff)
Short description: European optical imaging satellite
Sentinel-2A
Sentinel 2-IMG 5873-white (crop).jpg
Model of a Sentinel 2 satellite
Mission typeEarth observation
OperatorESA
COSPAR ID2015-028A
SATCAT no.40697
WebsiteSentinel-2 (ESA)
Mission durationPlanned: 7 years[1]
Elapsed: 9 years, 5 months, 11 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)
520Mbit/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 as part of the European Space Agency's Copernicus Programme. The satellite carries a wide swath high-resolution multispectral imager with 13 spectral bands. It will perform terrestrial observations in support of services such as forest monitoring, land cover changes detection, and natural disaster management.[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]

Orbital operation

The satellite captured its first image 100 hours after launch, making a 290 km 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 the Multi-Spectral Imager.[8]

References

  1. ↑ "Sentinel-2: The Operational Compernicus Optical High Resolution Land Mission". European Space Agency. 2013. http://esamultimedia.esa.int/docs/S2-Data_Sheet.pdf. 
  2. ↑ "Second Copernicus environmental satellite safely in orbit". European Space Agency. 23 June 2015. http://www.esa.int/Our_Activities/Observing_the_Earth/Copernicus/Sentinel-2/Second_Copernicus_environmental_satellite_safely_in_orbit. 
  3. ↑ "Sentinel 2A - Orbit". Heavens-Above. 9 March 2017. http://heavens-above.com/orbit.aspx?satid=40697. 
  4. ↑ Justice, Adam (23 June 2015). "Sentinel-2A: Satellite blasts off to provide new, improved view of Earth". International Business Times. http://www.ibtimes.co.uk/sentinel-2a-satellite-blasts-off-provide-new-improved-view-earth-1507541. 
  5. ↑ Chris Bergin (June 22, 2015). "Vega successfully launches Sentinel-2A mission". https://www.nasaspaceflight.com/2015/06/vega-fifth-sentinel-2a/. 
  6. ↑ "Sentinel-2 delivers first images". European Space Agency. 29 June 2015. http://www.esa.int/Our_Activities/Observing_the_Earth/Copernicus/Sentinel-2/Sentinel-2_delivers_first_images. 
  7. ↑ 7.0 7.1 Hoersch, Bianca (2015). "A short success story of Sentinel-2A". Meeting of the Earth Observation Programme Board. 22–23 September 2015. ESRIN, Frascati, Italy.. http://www.snsb.se/Global/Fj%C3%A4rranalysanv%C3%A4ndare/Fj%C3%A4rranalysdagarna%202015/RUM%20461/3%20Sentinel-2_Stockholm_FINAL.pdf. Retrieved 1 February 2017. 
  8. ↑ "Loss of Sentinel-2A acquisitions between 20 and 23 January 2017". European Space Agency. 23 January 2017. https://sentinel.esa.int/web/sentinel/missions/sentinel-2/news/-/article/loss-of-sentinel-2a-acquisition-between-20-and-23-january-2017. 

External links



Retrieved from "https://handwiki.org/wiki/index.php?title=Engineering:Sentinel-2A&oldid=2916117"