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 (after Sentinel-3A, launched 16 February 2016) of four planned Sentinel-3 satellites.
Quick Facts Mission type, Operator ...
Sentinel-3B Vector drawing of the Sentinel-3 |
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| Mission type | Earth observation |
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| Operator | ESA · EUMETSAT |
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| COSPAR ID | 2018-039A |
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| SATCAT no. | 43437 |
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| Website | Sentinel-3 (ESA) |
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| Mission duration | Planned: 7 years
Elapsed: 7 years, 2 months, 27 days |
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| Spacecraft type | Sentinel-3 |
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| Bus | Prima |
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| Manufacturer | Thales Alenia Space[1] |
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| Launch mass | 1,250 kg (2,756 lb)[2] |
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| Dry mass | 1,150 kg (2,535 lb)[3] |
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| Dimensions | 3.9 × 2.2 × 2.2 m (12.8 × 7.2 × 7.2 ft)[2] |
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| Power | 2,300 watts[3] |
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| Launch date | 25 April 2018, 17:57:51 (2018-04-25UTC17:57:51) UTC[1] |
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| Rocket | Rokot/Briz-KM |
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| Launch site | Plesetsk Cosmodrome, Site 133 |
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| Contractor | Eurockot Launch Services |
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| Reference system | Geocentric |
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| Regime | Sun-synchronous |
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| Semi-major axis | 7,180.77 km (4,461.92 mi) |
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| Eccentricity | 0.0001027 |
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| Perigee altitude | 801.90 km (498.28 mi) |
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| Apogee altitude | 803.38 km (499.20 mi) |
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| Inclination | 98.6276° |
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| Period | 100.93 min |
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| RAAN | 183.84° |
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| Argument of perigee | 96.39° |
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| Mean motion | 14.26 rev/day |
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| Repeat interval | 27 days[4] |
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| Epoch | 25 April 2018, 20:50:15 UTC[5] |
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| Band | S band (TT&C support)
X band (science data) |
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| Bandwidth | S band: 64 kbit/s uplink, 1 Mbit/s downlink
X band: 2 × 280 Mbit/s |
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| Instruments |
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| OLCI | Ocean and Land Colour Instrument |
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| SLSTR | Sea and Land Surface Temperature Radiometer |
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| SRAL | Synthetic Aperture Radar Altimeter |
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| MWR | Microwave Radiometer |
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| DORIS | Doppler Orbitography and Radiopositioning Integrated by Satellite |
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| LRR | Laser Retro-Reflector |
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| GNSS | Global Navigation Satellite System |
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