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🛰️ SATELLITE · HISTORICAL RECORD

BIRDS-X

Re-entered 31 Jan 2026

BIRDS-X (NORAD 65729, COSPAR 1998-067XH) was a J satellite that re-entered Earth's atmosphere on 31 Jan 2026, launched on 24 Aug 2025 on the 77KM No. 17501 mission. It was operated by KYUT as part of the Kyutech programme. The spacecraft was built by KYUT on the Cubesat 2U bus, with a mass of 2 kg. Like most satellites in low orbits, it was gradually slowed by atmospheric drag until re-entry. Historical record from Orbital Radar's satellite archive, cross-referenced with the live satellite catalogue.

2025
launched
2026
re-entered
1
year on orbit
2
kg mass

Lifecycle

Launched24 Aug 2025 · on the 77KM No. 17501 mission
Operational1 Dec 2025 · entered service
Retired1 Dec 2025 · end of operational service
Re-entered31 Jan 2026 · atmospheric re-entry — object destroyed

Specifications

NORAD ID65729
COSPAR1998-067XH
TypeSatellite
OperatorKYUT
Country / StateJ
ManufacturerKYUT
BusCubesat 2U
Mass2 kg
ProgrammeKyutech
CategoryTECH
OrbitLEO (LLEO/I)
Altitude410 × 411 km
Inclination51.6°

Frequently asked questions

What happened to BIRDS-X?

BIRDS-X re-entered Earth's atmosphere on 31 Jan 2026, ending a mission that began with its launch in 2025. Objects in low orbits are gradually slowed by atmospheric drag until they fall back and burn up on re-entry.

When did BIRDS-X re-enter the atmosphere?

BIRDS-X re-entered on 31 Jan 2026, according to Orbital Radar's historical catalogue records.

Who operated and built BIRDS-X?

BIRDS-X was operated by KYUT and built by KYUT (J).

Launched together

77KM No. 175-01Re-entered 1998ILLUMA-TRe-entered 2023Atsushi Space ChallengeRe-entered 2025STARS-Me2Re-entered 2026RSP-03Re-entered 2026GHS-01Re-entered 2026YOTSUBA-KULOVERRe-entered 2026e-kagaku-1Re-entered 2026
Historical record from the Orbital Radar satellite archive. Sources & methodology: data sources. Accessed 2026-09-06.