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🛰️ SATELLITE · HISTORICAL RECORD

Lemur FM33

Re-entered 29 Apr 2023

Lemur FM33 (NORAD 42754, COSPAR 2017-019D) was a US satellite that re-entered Earth's atmosphere on 29 Apr 2023, launched on 18 Apr 2017 on the Cygnus OA-7 mission. It was operated by Spire Global as part of the Spire programme. The spacecraft was built by SPIREG on the Cubesat 3U bus, with a mass of 4 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.

2017
launched
2023
re-entered
6
years on orbit
4
kg mass

Lifecycle

Launched18 Apr 2017 · on the Cygnus OA-7 mission
Operational1 Apr 2020 · entered service
Retired1 Apr 2020 · end of operational service
Re-entered29 Apr 2023 · atmospheric re-entry — object destroyed

Specifications

NORAD ID42754
COSPAR2017-019D
TypeSatellite
OperatorSpire Global
Country / StateUS
ManufacturerSPIREG
BusCubesat 3U
Mass4 kg
ProgrammeSpire
CategoryCOM/MET-RO
OrbitLEO (LLEO/I)
Altitude477 × 489 km
Inclination51.6°

Frequently asked questions

What happened to Lemur FM33?

Lemur FM33 re-entered Earth's atmosphere on 29 Apr 2023, ending a mission that began with its launch in 2017. Objects in low orbits are gradually slowed by atmospheric drag until they fall back and burn up on re-entry.

When did Lemur FM33 re-enter the atmosphere?

Lemur FM33 re-entered on 29 Apr 2023, according to Orbital Radar's historical catalogue records.

Who operated and built Lemur FM33?

Lemur FM33 was operated by Spire Global and built by SPIREG (US).

Launched together

QB50-TR02Re-entered 2019QB50-DE02Re-entered 2019QB50-US04/QBUS 4Re-entered 2018KySat-3Re-entered 2018CXBN-2Re-entered 2019IceCubeRe-entered 2018QB50-TW01Re-entered 2019QB50-FR01Re-entered 2019
Historical record from the Orbital Radar satellite archive. Sources & methodology: data sources. Accessed 2026-09-06.