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🛰️ SATELLITE · HISTORICAL RECORD

Lemur FM31

Re-entered 6 Apr 2023

Lemur FM31 (NORAD 42752, COSPAR 2017-019B) was a US satellite that re-entered Earth's atmosphere on 6 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-entered6 Apr 2023 · atmospheric re-entry — object destroyed

Specifications

NORAD ID42752
COSPAR2017-019B
TypeSatellite
OperatorSpire Global
Country / StateUS
ManufacturerSPIREG
BusCubesat 3U
Mass4 kg
ProgrammeSpire
CategoryCOM/MET-RO
OrbitLEO (LLEO/I)
Altitude476 × 490 km
Inclination51.6°

Frequently asked questions

What happened to Lemur FM31?

Lemur FM31 re-entered Earth's atmosphere on 6 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 FM31 re-enter the atmosphere?

Lemur FM31 re-entered on 6 Apr 2023, according to Orbital Radar's historical catalogue records.

Who operated and built Lemur FM31?

Lemur FM31 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.