No public orbit · France

CSO-1

NO PUBLIC ORBIT

CSO-1 (NORAD 43866) is a satellite whose orbit is not public. What is published: its catalogue entry, its UN registration and who operates it.

Orbit

No public orbit

The public catalogue lists no orbit for it, not even its height and tilt (CelesTrak, 14 Oct 2026). azmth draws nothing for it.

Catalogue status: CelesTrak, 14 Oct 2026

Catalogue

Country: France; From GCAT (14 Oct 2026)
Launched: 19 Dec 2018
COSPAR ID: 2018-106A
NORAD ID: 43866

France's UN registration gives its height as about 800 km up, with no tilt or period (ST/SG/SER.E/886, 20 Dec 2019). Its current orbit is not published. France gives its function as “Defence satellite”.

Who operates it

MilitaryFranceActive

Optical imaging

Official description

“The CSO (Optical Space Component) satellites of the MUSIS programme (Multinational Space-based Imaging System) are military observation satellites dedicated to French Defence and its partners.”

CNES, programme page, 26 Jun 2025

azmth's translation · Show original

«Les satellites CSO (Composante Spatiale Optique) du programme MUSIS (Multinational Space-based Imaging System) sont des satellites d’observation militaire dédiés à la Défense française et à ses partenaires.»

Independent assessment

GCAT classes it as a military satellite for optical imaging, lists its owner as General Delegation for Ordnance and records it as active (14 Oct 2026).

Data: GCAT · CC BY 4.0 Class, mission and status adapted from GCAT by Jonathan McDowell, CC BY 4.0, data update 14 Oct 2026.

Why some orbits are not public →

Military satellites, counted and explained →

CelesTrak record