International Space Station / human-spaceflight constellation
sourcing7 factsUnited States, Russia, Europe, Japan, Canadaactive
The International Space Station (ISS) is a space station in low Earth orbit (LEO). It is the product of the International Space Station program and is operated by five partner space agencies. Since 2 November 2000, it has hosted the longest continuous presence of humans in space.
faq
Who operates International Space Station?
International Space Station is operated by NASA, Roscosmos, ESA, JAXA, CSA. (source, as of 2026-07-05)
How many International Space Station satellites are active on orbit?
CelesTrak's catalog currently tracks 1 object for International Space Station. (source, as of 2026-07-11)
When did International Space Station first launch?
International Space Station first launched on 1998-11-20. (source, as of 2026-07-05)
facts
operatorNASA, Roscosmos, ESA, JAXA, CSA
countryUnited States, Russia, Europe, Japan, Canada
sensor typesunknown
sats launched (total)unknown
sats active (claimed)unknown
sats active (verified)1
sats plannedunknown
orbit370-460 km (200-250 nmi)
first launch1998-11-20
latest launchunknown
statusactive
websitenasa.gov
sats active (verified) counts objects currently tracked in CelesTrak's catalog for this constellation. It is a tracking count, not an operator claim about satellite health.
orbit
orbit370-460 km (200-250 nmi)
sats launched (total)unknown
sats active (claimed)unknown
sats active (verified)1
sats plannedunknown
timeline
- 20242024-06-26NASA selects SpaceX to build the US Deorbit Vehicle to bring down the ISS (source, as of 2026-07-06)
- 20202020-05-30SpaceX flies Demo-2, the first commercial crewed launch to the ISS (source, as of 2026-07-06)
- 2020-01-27NASA selects Axiom Space to build the first commercial destination module for the ISS (source, as of 2026-07-06)
- 20122012-10-07SpaceX flies first contracted commercial cargo resupply mission to the ISS (source, as of 2026-07-06)
- 19981998-11-20Zarya, the first ISS module, launches into orbit (source, as of 2026-07-06)
sources
[1] nasa.gov ↗
operatorfirst-party2026-07-05orbitfirst-party2026-07-05first launchfirst-party2026-07-05websitefirst-party2026-07-06
[3] celestrak.org ↗
sats active (verified)computed2026-07-11