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DEBRIS

DUPLEX

ISS-Released Russian Experiment Hardware · Roscosmos

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Russian-origin hardware jettisoned from the International Space Station exterior during a 2025 EVA, now tracking independently in low Earth orbit. Objects like DUPLEX are a recurring artifact of the ISS Russian segment — experiments are mounted externally on Zvezda, Nauka, or Poisk modules, operated for their test duration, then removed during spacewalks and released into free orbit to gradually re-enter. The ISS has spawned hundreds of such tracked objects. DUPLEX, likely named for its dual-function design, has now completed its mission. It is silently descending toward an atmospheric re-entry of its own, a very small piece of a very large space station finding its own path back to Earth.

Its orbit

Orbit
Low Earth Orbitcan appear as a fast-moving star at dawn or dusk
Altitude
225–229 mi (363–369 km)
Inclination
51.6°
One orbit
91.7 minutes15.7 orbits a day
NORAD ID
66906
Int’l designator
1998-067XS
Launched
1998

Orbital elements from CelesTrak, as of 21 Sep 2026.

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