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SENTINEL 3B

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SENTINEL 3B is classified as:


NORAD ID: 43437
Int'l Code: 2018-039A
Launch date: April 25, 2018
Source: European Space Agency (ESA)
Launch site: PLESETSK MISSILE AND SPACE COMPLEX (PKMTR)

SENTINEL-3B is a spacecraft dedicated to the study of Earth’s oceans and vegetation. SENTINEL-3B is part of the Copernicus programme, a partnership between the European Space Agency (ESA), EUMETSAT and the European Commission to perform Earth science and environmental research from orbit. The launch of SENTINEL-3B completes the first-generation satellite constellation for Copernicus.
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NASA's NSSDC Master Catalog

Two Line Element Set (TLE): 
1 43437U 18039A   26283.41305301  .00000082  00000-0  52036-4 0  9990
2 43437  98.6245 349.2786 0000836  69.0155 291.1115 14.26737464440551
Source of the keplerian elements: AFSPC