Sentinel-3B Explained

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Sentinel-3B
Mission Type:	Earth observation
Operator:	ESAEUMETSAT
Cospar Id:	2018-039A
Satcat:	43437
Mission Duration:	Planned: 7 years Elapsed:
Spacecraft Type:	Sentinel-3
Spacecraft Bus:	Prima
Manufacturer:	Thales Alenia Space^[1]
Launch Mass:	12500NaN0^[2]
Dry Mass:	11500NaN0^[3]
Dimensions:	3.9xx
Power:	2,300 watts
Launch Date:	UTC
Launch Rocket:	Rokot/Briz-KM
Launch Site:	Plesetsk Cosmodrome, Site 133
Launch Contractor:	Eurockot Launch Services
Orbit Reference:	Geocentric
Orbit Regime:	Sun-synchronous
Orbit Semimajor:	7180.77km (4,461.92miles)
Orbit Eccentricity:	0.0001027
Orbit Periapsis:	801.9km (498.3miles)
Orbit Apoapsis:	803.38km (499.2miles)
Orbit Inclination:	98.6276°
Orbit Period:	100.93 min
Orbit Raan:	183.84°
Orbit Arg Periapsis:	96.39°
Orbit Mean Motion:	14.26 rev/day
Orbit Repeat:	27 days^[4]
Orbit Epoch:	25 April 2018, 20:50:15 UTC^[5]
Apsis:	gee
Trans Band:	S band (TT&C support) X band (science data)
Trans Bandwidth:	S band 64 kbit/s uplink, 1 Mbit/s downlink X band: 2 × 280 Mbit/s
Instruments List:	Acronym1: OLCI Name1: Ocean and Land Colour Instrument Acronym2: SLSTR Name2: Sea and Land Surface Temperature Radiometer Acronym3: SRAL Name3: Synthetic Aperture Radar Altimeter Acronym4: MWR Name4: Microwave Radiometer Acronym5: DORIS Name5: Doppler Orbitography and Radiopositioning Integrated by Satellite Acronym6: LRR Name6: Laser Retro-Reflector Acronym7: GNSS Name7: Global Navigation Satellite System
Programme:	Sentinel-3
Previous Mission:	Sentinel-3A
Next Mission:	Sentinel-3C

Sentinel-3B is a European Space Agency Earth observation satellite dedicated to oceanography which launched on 25 April 2018. It was built as a part of the Copernicus Programme, and is the second (after Sentinel-3A, launched 16 February 2016) 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.

See also

• Sentinel-3#Instruments

External links

• Sentinel-3 program website by ESA
• Sentinel-3 website by the Copernicus Programme
• Real-time orbital tracking - uphere.space

Notes and References

1. News: European environmental observer launched by Russian rocket . Spaceflight Now . Stephen . Clark . 25 April 2018 . 25 April 2018.
2. Web site: Copernicus: Sentinel-3 . eoPortal . European Space Agency . 25 April 2018.
3. Web site: Satellite: Sentinel-3B . . 25 April 2018.
4. Web site: Sentinel-3 › Mission Summary . European Space Agency . 30 January 2016.
5. Web site: Sentinel 3B - Orbit . Heavens Above . 25 April 2018 . 25 April 2018.