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Starlink Group 4-4-29

Re-entered 28 Dec 2021

Starlink Group 4-4-29 (NORAD 50184, COSPAR 2021-125AE) was a US satellite that re-entered Earth's atmosphere on 28 Dec 2021, launched on 18 Dec 2021 on the Starlink Group 4-4 mission. It was operated by SpaceX as part of the Starlink 1.5 G4 programme. The spacecraft was built by SPXS on the Starlink bus, with a mass of 290 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
2021
re-entered
0
years on orbit
290
kg mass

Lifecycle

Launched18 Dec 2021 · on the Starlink Group 4-4 mission
Operational19 Dec 2021 · entered service
Retired19 Dec 2021 · end of operational service
Re-entered28 Dec 2021 · atmospheric re-entry — object destroyed

Specifications

NORAD ID50184
COSPAR2021-125AE
TypeSatellite
OperatorSpaceX
Country / StateUS
ManufacturerSPXS
BusStarlink
Mass290 kg (270 kg dry)
ProgrammeStarlink 1.5 G4
CategoryCOM
OrbitLEO (LLEO/I)
Altitude210 × 341 km
Inclination53.2°

Frequently asked questions

What happened to Starlink Group 4-4-29?

Starlink Group 4-4-29 re-entered Earth's atmosphere on 28 Dec 2021, 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 Starlink Group 4-4-29 re-enter the atmosphere?

Starlink Group 4-4-29 re-entered on 28 Dec 2021, according to Orbital Radar's historical catalogue records.

Who operated and built Starlink Group 4-4-29?

Starlink Group 4-4-29 was operated by SpaceX and built by SPXS (US).

Launched together

Starlink Group 4-4-01Re-entered 2025Starlink Group 4-4-25NORAD 50180Starlink Group 4-4-26NORAD 50181Starlink Group 4-4-27NORAD 50182Starlink Group 4-4-28NORAD 50183Starlink Group 4-4-30NORAD 50185Starlink Group 4-4-31NORAD 50186Starlink Group 4-4-32NORAD 50187
Historical record from the Orbital Radar satellite archive. Sources & methodology: data sources. Accessed 2026-09-06.