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Explore 16,793 catalogued objects in orbit, almost all active payloads, with source attribution and field-level provenance where available.

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ISS (ZARYA)

NORAD 25544 · COSPAR 1998-067A

Operational

Operator: NASA Johnson Space Flight Center
Orbit: 416-423 km · 51.6° · LEO
Launch date: Nov 20, 1998

3 sources on this recordView full record

#01

Why you can trust this

16,793

tracked objects

16,543

active payloads

Sep 7, 2026

latest recorded source fetch

ODbL-1.0

open data licence

Available field-level claims show their source; missing provenance is explicit. Data is reconciled from CelesTrak, GCAT / J. McDowell, Wikidata, and SatNOGS DB with provenance. Read the public methodology.

Orbital data is approximate and not for operations

#02

Start with an object

ISS (ZARYA)

LEO

NORAD 25544 · 1998-067A

NASA Johnson Space Flight Center

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HST

LEO

NORAD 20580 · 1990-037B

NASA Goddard Space Flight Center

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SENTINEL-2A

SSO

NORAD 40697 · 2015-028A

European Commission DG-GROW Directorate I/2, Copernicus Unit / European Space Agency

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#03

Field-level provenance

Every field has a story.

Each claim on a record carries the source it came from, and when two sources disagree the disagreement is shown rather than resolved out of sight.

Unknown is a valid answer. Unsupported precision is not.

See the full record for ISS (ZARYA)

Launch dateNov 20, 1998via GCAT — Jonathan McDowell's General Catalog
OperatorNASA Johnson Space Flight Center2 sources disagreevia GCAT — Jonathan McDowell's General Catalog
Object classPAYLOADvia GCAT — Jonathan McDowell's General Catalog
Launch mass (kg)20,2812 sources disagreevia GCAT — Jonathan McDowell's General Catalog
StatusOPERATIONALvia OrbitalWiki manual curation
Launch vehicleNot recordedno authoritative source

#04

Recently launched payloads

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#05

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