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Satellite · NORAD 40545 · COSPAR 2015-017B

GSAT0204 (GALILEO 8)

InactivePayloadMEONavigation derived

Altitude now

23,231.8km

SGP4 propagation

Velocity

3.67km/s

Inclination

56.76°

Period

14.1 h

844.7 min

Perigee

23,208km

Apogee

23,236km

orbit staleOrbit updated 8 h ago · element epoch 04 Sept 2026 01:42 UTC (188.0 h old)· Metadata updated 8 h ago

Live position

Ground track & current position

Propagated client-side every 5 s from the latest element set (SGP4). Accuracy degrades with element age.

Ground track of GSAT0204 (GALILEO 8)GSAT0204 (GALILEO 8)
LIVE · SGP4

Loading ground track…

Latitude
42.136° N
Longitude
166.938° E
Altitude
23231.8 km
Velocity
3.670 km/s
  • past 45 min
  • next 90 min
  • first fix from server render · element epoch 04 Sept 2026 01:42 UTC

Mission

Mission & classification

Mission type derived
Navigation
Object type
Payload
SATCAT ops status
Backup / standby [B]
Radar cross-section
9.5 m²
Constellation membership derived
Galileo via name_pattern

CelesTrak groups

Aliases

  • GSAT0204 (GALILEO 8)Celestrak

Ownership

Operator & country

Operator
European Union Agency for the Space Programme (EUSPA)
SATCAT owner code
ESA · European Space Agency
Country
—

Launch

Launch

Launch page →
Launch date
27 Mar 2015
COSPAR launch id
2015-017
Launch site
Guiana Space Centre, Kourou

Objects from the same launch · 2

Change log

History

FieldChangeSourceDate
StatusACTIVE → INACTIVECelestrak Satcat11 Sept 2026 18:53 UTC
Owner Code∅ → ESACelestrak Satcat11 Sept 2026 18:53 UTC
Orbit Class∅ → MEOCelestrak11 Sept 2026 18:53 UTC

Regulatory

UN registration

UN Register of Objects Launched into Outer Space (UNOOSA) — connector planned, not yet ingested; registration unavailable

Transparency

Sources & provenance

All sources →

  • CelesTrakcommunity

    Orbital data courtesy of CelesTrak (Dr. T.S. Kelso).

    last sync 6 h ago

  • CelesTrak SATCATcommunity

    Satellite catalog data courtesy of CelesTrak.

    last sync 8 h ago

Field provenance

FieldSourceObservedConfidence
Canonical NameCelesTrak SATCAT11 Sept 2026 18:53 UTC100%
Decay DateCelesTrak SATCAT11 Sept 2026 18:53 UTC100%
Launch DateCelesTrak SATCAT11 Sept 2026 18:53 UTC100%
Object TypeCelesTrak SATCAT11 Sept 2026 18:53 UTC100%
Orbital ElementsCelesTrak11 Sept 2026 20:57 UTC100%
Owner CodeCelesTrak SATCAT11 Sept 2026 18:53 UTC100%
StatusCelesTrak SATCAT11 Sept 2026 18:53 UTC100%

Timeline

Events

All events →

  1. 11 Sept 2026 18:53 UTC

    DecommissionGSAT0204 (GALILEO 8) reported inactive

    SATCAT status changed ? → B.

    confidence 80%

Reference

Identifiers

NORAD catalogue number
40545
COSPAR / international designator
2015-017B
SatelliteIndex id
sat_01M28X2SWX4DFCTBNEK87EKHAR
Canonical slug
gsat0204-galileo-8-40545

Orbit class, mission type and constellation membership are derived by SatelliteIndex (Navigation) — see the methodology. Positions are propagated estimates, not tracking measurements; never use them for conjunction assessment.