Spire Lemur / eo constellation
sourcingtypical 4/5 · 10 factsThe Lemur satellite is a nanosatellite developed by Spire Global, operating in low Earth orbit. It carries multiple sensors and instruments, including an Automatic Identification System (AIS) receiver, a weather sensor, and a GPS receiver. The satellites collect data on factors such as weather, maritime traffic, and aircraft tracking.
stock
NYSE: SPIR (source, as of 2026-07-05)
faq
Who operates Spire Lemur?
Spire Lemur is operated by Spire Global. (source, as of 2026-07-05)
How many Spire Lemur satellites are active on orbit?
CelesTrak's catalog currently tracks 72 objects for Spire Lemur. (source, as of 2026-09-08)
When did Spire Lemur first launch?
Spire Lemur first launched on 2014-06-19. (source, as of 2026-07-12)
facts
sats active (verified) counts objects currently tracked in CelesTrak's catalog for this constellation. It is a tracking count, not an operator claim about satellite health.
orbit
events
- notable2026-08-26Spire, Muon Space, Weather Stream win NOAA microwave-sounder awards
- noise2026-08-25EUMETSAT renews Spire weather-data contract at 4 million euros
- noise2026-08-14Spire and PlanetiQ win NOAA radio-occultation data contracts
- noise2026-08-04Spire wins $3 million NOAA extension for hyperspectral sounder data
- notable2026-07-23Spire Global and SATE partner on ESA-backed AI satellite health program
- notable2026-07-15FCC proposes opening unlicensed Wi-Fi and Bluetooth bands to satellites
- noise2026-07-14Spire partners with SATE on ESA-backed AI satellite health monitoring program
- noise2026-06-10Spire signs MoU with Diehl Defence on satellite-based missile early warning
timeline
- 20252025-04-25Spire Global completes sale of maritime business to Kpler, eliminates debt (source, as of 2026-07-05)
- 20212021-11-29Spire Global completes acquisition of exactEarth Ltd (source, as of 2026-07-05)
- 2021-09-14Spire Global agrees to acquire exactEarth for about 161 million dollars (source, as of 2026-07-05)
- 2021-08-17Spire Global completes NavSight merger and begins trading on NYSE (source, as of 2026-07-05)
- 20192019-04-01Spire launches 100th Lemur satellite, calls it world's largest weather constellation (source, as of 2026-07-05)
- 20142014-06-19Spire (as NanoSatisfi) launches prototype Lemur-1 satellite on Dnepr (source, as of 2026-07-05)
sources
Includes data from Gunter's Space Page: doc_sdat/lemur-1.htm