Sentinel-3B

Sentinel-3B
Vector drawing of the Sentinel-3
Mission type Earth observation
Operator ESA · EUMETSAT
COSPAR ID 2018-039A
SATCAT no. 43437
Website Sentinel-3 (ESA)
Mission duration Planned: 7 years
Elapsed: 5 months, 25 days
Spacecraft properties
Spacecraft type Sentinel-3
Bus Prima
Manufacturer Thales Alenia Space[1]
Launch mass 1,250 kg (2,756 lb)[2]
Dry mass 1,150 kg (2,535 lb)[3]
Dimensions 3.9 × 2.2 × 2.2 m (12.8 × 7.2 × 7.2 ft)[2]
Power 2,300 watts[3]
Start of mission
Launch date 25 April 2018, 17:57:51 (2018-04-25UTC17:57:51) UTC[1]
Rocket Rokot
Launch site Plesetsk Cosmodrome, Site 133
Contractor Eurockot Launch Services
Orbital parameters
Reference system Geocentric
Regime Sun-synchronous
Semi-major axis 7,180.77 km (4,461.92 mi)
Eccentricity 0.0001027
Perigee 801.90 km (498.28 mi)
Apogee 803.38 km (499.20 mi)
Inclination 98.6276°
Period 100.93 min
RAAN 183.84°
Argument of perigee 96.39°
Mean motion 14.26 rev/day
Repeat interval 27 days[4]
Epoch 25 April 2018, 20:50:15 UTC[5]
Transponders
Band S band (TT&C support)
X band (science data)
Bandwidth S band: 64 kbit/s uplink, 1 Mbit/s downlink
X band: 2 × 280 Mbit/s

Sentinel-3B is a European Space Agency Earth observation satellite dedicated to oceanography which launched on 25 April 2018.[1] It was built as a part of the Copernicus Programme, and is the second of four planned Sentinel-3 satellites.

Launch

Sentinel-3B was successfully launched on 25 April 2018 at 17:57 UTC from the Plesetsk Cosmodrome aboard a Rokot launch vehicle.[1]

References

  1. 1 2 3 4 Clark, Stephen (25 April 2018). "European environmental observer launched by Russian rocket". Spaceflight Now. Retrieved 25 April 2018.
  2. 1 2 "Copernicus: Sentinel-3". eoPortal. European Space Agency. Retrieved 25 April 2018.
  3. 1 2 "Satellite: Sentinel-3B". World Meteorological Organization. Retrieved 25 April 2018.
  4. ↑ "Sentinel-3 › Mission Summary". European Space Agency. Retrieved 30 January 2016.
  5. ↑ "Sentinel 3B - Orbit". Heavens Above. 25 April 2018. Retrieved 25 April 2018.

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