Constellation profile

Celeste

A low-Earth-orbit complementary navigation layer intended to augment Galileo resilience and services.

European Space Agency (ESA)Service start: Not stated

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Linked spacecraft

Rows currently linked to this constellation.

Active linked

Derived from linked spacecraft status.

Future linked

Spacecraft rows marked future.

Planned target

Forecasted Satellites

2 forecast rows linked to this constellation.

9 satellites2027Forecast table

Forecast entry	Year	Satellites	Orbit	Vehicle	Manufacturer	Mission	Launch likelihood
Celeste in-orbit demonstration constellation

Linked Spacecraft

2 linked spacecraft shown.

Spacecraft	Status	Orbit	Launch date
LPTNSAT-001	active	LEO	Mar 28, 2026
LPTNSAT-002	active	LEO	Mar 28, 2026

Eight larger satellites plus one additional satellite are planned after the initial two IOD spacecraft to complete the 11-satellite Celeste demonstration constellation, validating new signals and service capabilities across L-, S-, C-, UHF-band and timing technologies.

Celeste in-orbit demonstration constellation

TBD · LEO

2027

Manufacturer: GMV / Thales Alenia Space
Mission: Positioning Navigation Timing
Launch likelihood: 4.6 / 5

LEO-PNT demonstration constellation

TBD · LEO

2027

Manufacturer: GMV / OHB / Thales Alenia Space
Mission: Positioning Navigation Timing
Launch likelihood: 4.6 / 5