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SatelliteIndex

Satellite · NORAD 25544 · COSPAR 1998-067A

ISS (ZARYA)

ActiveSpace stationLEOSpace station derived

Altitude now

420.9km

SGP4 propagation

Velocity

7.66km/s

Inclination

51.63°

Period

93.0 min

93.0 min

Perigee

416km

Apogee

423km

orbit agingOrbit updated 8 h ago · element epoch 11 Sept 2026 10:24 UTC (12.4 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 ISS (ZARYA)ISS (ZARYA)
LIVE · SGP4

Loading ground track…

Latitude
11.164° N
Longitude
94.220° W
Altitude
420.9 km
Velocity
7.660 km/s
  • past 45 min
  • next 90 min
  • first fix from server render · element epoch 11 Sept 2026 10:24 UTC

Mission

Mission & classification

Mission type derived
Space station
Object type
Space station
SATCAT ops status
Operational [+]
Radar cross-section
399.1 m²
Constellation membership derived
International Space Station via name_pattern

CelesTrak groups

Aliases

  • ISS (ZARYA)Celestrak

Ownership

Operator & country

Operator
NASA
SATCAT owner code
ISS · International Space Station
Country
International partnership

Launch

Launch

Launch page →
Launch date
20 Nov 1998
COSPAR launch id
1998-067
Launch site
Baikonur Cosmodrome (Tyuratam)

Objects from the same launch · 40+

All objects from launch 1998-067 →

Change log

History

FieldChangeSourceDate
Object TypePAYLOAD → STATIONCelestrak Satcat11 Sept 2026 18:53 UTC
Owner Code∅ → ISSCelestrak Satcat11 Sept 2026 18:53 UTC
Orbit Class∅ → LEOCelestrak11 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 →

No events detected for this object yet. Launches, decays and orbit changes are generated by the derived-analytics connector.

Reference

Identifiers

NORAD catalogue number
25544
COSPAR / international designator
1998-067A
SatelliteIndex id
sat_01M28X2SWT01QM2JGQ9QTBM23B
Canonical slug
iss-zarya-25544

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