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🛰️ SATELLITE · HISTORICAL RECORD

BIRDS-4 Tsuru

Re-entered 5 Jul 2022

BIRDS-4 Tsuru (NORAD 47927, COSPAR 1998-067SD) was a J satellite that re-entered Earth's atmosphere on 5 Jul 2022, launched on 20 Feb 2021 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 1U bus, with a mass of 1 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.

2021
launched
2022
re-entered
1
year on orbit
1
kg mass

Lifecycle

Launched20 Feb 2021 · on the 77KM No. 17501 mission
Operational14 Jun 2022 · entered service
Retired14 Jun 2022 · end of operational service
Re-entered5 Jul 2022 · atmospheric re-entry — object destroyed

Specifications

NORAD ID47927
COSPAR1998-067SD
TypeSatellite
OperatorKYUT
Country / StateJ
ManufacturerKYUT
BusCubesat 1U
Mass1 kg
ProgrammeKyutech
CategoryTECH
OrbitLEO (LLEO/I)
Altitude415 × 419 km
Inclination51.6°

Frequently asked questions

What happened to BIRDS-4 Tsuru?

BIRDS-4 Tsuru re-entered Earth's atmosphere on 5 Jul 2022, ending a mission that began with its launch in 2021. Objects in low orbits are gradually slowed by atmospheric drag until they fall back and burn up on re-entry.

When did BIRDS-4 Tsuru re-enter the atmosphere?

BIRDS-4 Tsuru re-entered on 5 Jul 2022, according to Orbital Radar's historical catalogue records.

Who operated and built BIRDS-4 Tsuru?

BIRDS-4 Tsuru was operated by KYUT and built by KYUT (J).

Launched together

WARP-01Re-entered 2022RSP-01Re-entered 2022TAU-Sat-1Re-entered 2022STARS-EC End Mass 1Re-entered 2022BIRDS-4 Maya-2Re-entered 2022OPUSAT-IIRe-entered 2022BIRDS-4 GuaraniSatRe-entered 2022MMSATS-1Re-entered 2023
Historical record from the Orbital Radar satellite archive. Sources & methodology: data sources. Accessed 2026-09-06.