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registry / constellations / Sentinel-3 (part of ESA Copernicus (fleet))

Sentinel-3 / eo constellation

sourcingtypical 4/5 · 15 facts
opticalmultispectralthermalEuropean Unionactive

Copernicus Sentinel-3 measures systematically Earth's oceans, land, ice and atmosphere to monitor and understand large-scale global dynamics. The mission delivers near-real-time data for ocean and weather forecasting, carrying instruments for ocean colour, sea and land surface temperature, and altimetry.

(source, as of 2026-07-05)

key specs

max resolution //300 mas of 2026-07-09
revisit //less than or equal to four days (varies with latitude)as of 2026-07-09
spectral bands //OLCI: 21 VNIR/SWIR bands, SLSTR: 11 bands (3 VNIR, 3 SWIR, 5 MWIR/TIR)as of 2026-07-09

faq

Who operates Sentinel-3?

Sentinel-3 is operated by EUMETSAT. (source, as of 2026-07-05)

How many Sentinel-3 satellites are active on orbit?

CelesTrak's catalog currently tracks 2 objects for Sentinel-3. (source, as of 2026-07-11)

When did Sentinel-3 first launch?

Sentinel-3 first launched on 2016-02-16. (source, as of 2026-07-05)