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🛰️ SATELLITE · HISTORICAL RECORD

Sakigake

Re-entered 8 Jan 1985

Sakigake (NORAD 15464, COSPAR 1985-001A) was a J satellite that re-entered Earth's atmosphere on 8 Jan 1985, launched on 7 Jan 1985 on the MS-T5 mission. It is catalogued as MS-T5. It was operated by ISAS as part of the ISAS Planet programme. The spacecraft was built by ISASM on the PLANET-A bus, with a mass of 136 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.

1985
launched
1985
re-entered
0
years on orbit
136
kg mass

Lifecycle

Launched7 Jan 1985 · on the MS-T5 mission
Operational7 Jan 1999 · entered service
Retired7 Jan 1999 · end of operational service
Re-entered8 Jan 1985 · atmospheric re-entry — object destroyed

Specifications

NORAD ID15464
COSPAR1985-001A
TypeSatellite
OperatorISAS
Country / StateJ
ManufacturerISASM
BusPLANET-A
Mass136 kg (126 kg dry)
ProgrammeISAS Planet
CategoryPLAN
OrbitHEO (EEO)
Altitude250 × -117,930 km
Inclination31.1°

Frequently asked questions

What happened to Sakigake?

Sakigake re-entered Earth's atmosphere on 8 Jan 1985, ending a mission that began with its launch in 1985. Objects in low orbits are gradually slowed by atmospheric drag until they fall back and burn up on re-entry.

When did Sakigake re-enter the atmosphere?

Sakigake re-entered on 8 Jan 1985, according to Orbital Radar's historical catalogue records.

Who operated and built Sakigake?

Sakigake was operated by ISAS and built by ISASM (J).

Historical record from the Orbital Radar satellite archive. Sources & methodology: data sources. Accessed 2026-10-21.