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notableconstellation2026-10-08

Sentinel-3C returns its first Earth images, ESA says

ESA

Two weeks after launch, ESA's Sentinel-3C delivered its first ocean-colour and radar-altimeter data.

Image: esa.int
// sources · 2 attached
  1. [1]first partyesa.int↗
  2. [2]official record · corroborationeu-space.europa.eu↗

what happened

ESA said the Copernicus Sentinel-3C satellite returned its first images and measurements from two of its instruments, the Ocean and Land Colour Instrument and the Synthetic Aperture Radar Altimeter, less than a month after its September 15 launch on a Vega-C from French Guiana. The imagery includes views of Italy, the Arctic and the Caribbean, plus measurements of Greenland ice-sheet height and sea-surface height, per ESA. ESA says commissioning the satellite for service will take about five more months.

why it matters

First light confirms Sentinel-3C is tracking toward operational handover, which matters for EO resellers and climate-data users who depend on Copernicus's free, continuous ocean and land colour data continuing without a gap as the constellation's older satellites age.

signal-to-noise

FIRST-PARTY
5/5
leadtier 5 of 5 on its owncorrobsources attached, no lift earned
calculation
5base tier 5 from lead source class "first_party" (ESA) esa.int
= 5current score, recomputed by the engine on every change
scorer v2how scores work →

quick facts

Companies
ESA
Category
constellation
Impact
notable
SNR
5 / 5
Event date
2026-10-08
Published
2026-10-08 14:33 UTC
#eo#europe#esa

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