List of Galileo satellites

From Wikipedia, the free encyclopedia

This is a list of past and present satellites of the Galileo navigation system. The fully operational constellation will nominally consist of 30 satellites in Medium Earth Orbit, with 24 active and 6 spares equally divided into 3 orbital planes in a Walker 24/3/1 configuration.[1]

Model of a Galileo IOV satellite

As of 21 May 2026, 34 Galileo satellites have been launched, consisting of 4 In Orbit Validation (IOV) and 30 Full Operational Capability (FOC) satellites. Two separate Galileo In-Orbit Validation Element (GIOVE) prototype vehicles were retired in 2012. Currently, 27 satellites are operational, 1 is undergoing commissioning, 4 are not usable, and 2 are decommissioned.

The remaining 4 FOC satellites have completed manufacturing and testing. They are currently in storage awaiting launch by Ariane 6.[2]

FOC satellites were awarded and built in three batches by OHB in Bremen, Germany, with the contribution of Surrey Satellite Technology (SSTL) in Guildford, United Kingdom.[3][4]

  1. Batch 1 consists of 14 FOC satellites (Galileo-FOC FM1 to Galileo-FOC FM14)
  2. Batch 2 consists of 8 FOC satellites (Galileo-FOC FM15 to Galileo-FOC FM22)
  3. Batch 3 consists of 12 FOC satellites (Galileo-FOC FM23 to Galileo-FOC FM34)

In parallel to Batch 3's completion, 12 Galileo Second Generation (G2G) satellites, featuring electric propulsion, enhanced navigation signals and capabilities, inter-satellite links and reconfigurability in space, were in development by Thales Alenia Space (TAS) and Airbus Defence and Space, with their deployment expected to begin in 2027.[3][5][6][7][8]

VS-01 launching the GSAT0101 and GSAT0102 IOV satellites on 21 October 2011

Summary table

More information Block, Launch period ...
Summary of satellites, as of 22 May 2026
Block Launch
period
Satellite launches Status
SuccessFailurePartial failureLaunchedPlannedIn operation
and healthy
Not usableRetiredDecommissionedUnder
commissioning
GIOVE 2005 – 20082000000110
IOV 2011 – 20124000030010
FOC 2014 – 20272602[α]14254010
G2G 2027 –00001200000
Total 3202116284130
  1. Deployed into wrong orbit
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Satellites

The initial 28 satellites were each named after a child that won the European Commission's Galileo drawing competition. One winner was selected from each member state of the European Union.[9]

Refer to Galileo Constellation Information for the most up-to-date information on the constellation status.

More information #, Satellite ...
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E5 quasi-pilot signal

To improve the performance of the Galileo Open Service, the E5 Quasi-Pilot signal component was introduced November 2025. The primary objective is a faster Time to First Fix, improved typically by factor 3.[41]

More information Satellites reconfigured for E5 Quasi-pilot, Start of QP transmission ...
Satellites reconfigured for E5 Quasi-pilot Start of QP transmission
GSAT0216 17 Nov 2025
GSAT0221 03 Dec 2025
GSAT0226 08 Dec 2025
GSAT0223 10 Dec 2025
GSAT0219 17 Mar 2026
GSAT0222 19 Mar 2026
GSAT0225 24 Mar 2026
GSAT0220 30 Mar 2026
GSAT0217 02 Apr 2026
GSAT0214 07 Apr 2026
GSAT0215 15 Apr 2026
GSAT0213 28 Apr 2026
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Orbital slots

Refer to Galileo Constellation Information for the most up-to-date information.

More information Slot, Relative Mean Anomaly ...
Slot Relative
Mean Anomaly
Plane Relative RAAN)
A (0°)B (120°)C (240°)Ext
01 0218 0220 0214 (0201)
02 45° 0226 0221 0209 (0202)
03 90° 0215 0223 0213
04 135° 0217 0219 0103
05 180° 0206 0101 0225
06 225° 0211 0102 0207
07 270° 0216 0222 0208
08 315° 0232 0203 0212
12 (0210) 0227
13 0233
14 (0204) 0104
15 0224
17 0234
? 0205
Numbers in (parentheses) refer to unavailable satellites.
Numbers in italics refer to under commissioning satellites.
Numbers deleted refer to retired satellites.
References: European GNSS Service Centre.[38]
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See also

References

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