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Lemur-2

Lemur 2 [Spire]

Lemur-2 is the initial constellation of low-Earth orbiting satellites built by Spire. These satellites carry two payloads for meteorology and ship traffic tracking.

The Lemur-2 satellites carry two payloads: STRATOS imaging payload and the SENSE AIS payload.

The SENSE payload enables tracking ships worldwide by receiving their AIS signals. Spire satellites, which orbit close to Earth's atmosphere, listen for GPS satellite signals - which are impacted as they pass through Earth's atmosphere. Using a process called GPS radio occultation, Spire measures the change in GPS signal readings to calculate very precise profiles for temperature, pressure, and humidity here on Earth.

The first four more Lemur-2 satellites were launched piggy-back on a PSLV-XL rocket in 2015.

The second batch was launched with Cygnus CRS-6 to the ISS, some of the satellites to be deployed from the ISS airlock, some of them directly from the Cygnus vehicle. Deployment of the ISS satellites bagan on 18 May 2016.

It is unknown, how many Lemur-2 satellites will be launched. The total number of Lemur satellites will be around 100, but these will be incremental updated and may feature different sensors.

Nation: USA
Type, Application: Earth observation
Operator: Spire
Contractors: Spire
Equipment: STRATOS (GPS radio occultation payload), SENSE (AIS payload)
Configuration: CubeSat (3U)
Propulsion: None
Power: Solar cells, batteries
Lifetime:
Mass: 4 kg
Orbit:
Satellite COSPAR Date LS Launch Vehicle Remarks
Lemur-2 1 (Lemur-2 Joel) 2015-052D 28.09.2015 Sr FLP PSLV-XL with AstroSat, LAPAN A2, exactView 9, Lemur-2 2, Lemur-2 3, Lemur-2 4
Lemur-2 2 (Lemur-2 Peter) 2015-052E 28.09.2015 Sr FLP PSLV-XL with AstroSat, LAPAN A2, exactView 9, Lemur-2 1, Lemur-2 3, Lemur-2 4
Lemur-2 3 (Lemur-2 Jeroen) 2015-052F 28.09.2015 Sr FLP PSLV-XL with AstroSat, LAPAN A2, exactView 9, Lemur-2 1, Lemur-2 2, Lemur-2 4
Lemur-2 4 (Lemur-2 Chris) 2015-052G 28.09.2015 Sr FLP PSLV-XL with AstroSat, LAPAN A2, exactView 9, Lemur-2 1, Lemur-2 2, Lemur-2 3
Lemur-2 5 (Lemur-2 Theresacondor) 1998-067JF 23.03.2016 CC SLC-41 Atlas-5(401) with Cygnus CRS-6, Diwata 1, Flock-2e' 1, ..., 20, Lemur-2 5, ..., 9 ?
Lemur-2 6 (Lemur-2 Kane) 1998-067JJ 23.03.2016 CC SLC-41 Atlas-5(401) with Cygnus CRS-6, Diwata 1, Flock-2e' 1, ..., 20, Lemur-2 5, ..., 9 ?
Lemur-2 7 (Lemur-2 Nick-Allain) 1998-067JK 23.03.2016 CC SLC-41 Atlas-5(401) with Cygnus CRS-6, Diwata 1, Flock-2e' 1, ..., 20, Lemur-2 5, ..., 9 ?
Lemur-2 8 (Lemur-2 Jeff) 1998-067JL 23.03.2016 CC SLC-41 Atlas-5(401) with Cygnus CRS-6, Diwata 1, Flock-2e' 1, ..., 20, Lemur-2 5, ..., 9 ?
Lemur-2 9 TBD 23.03.2016 CC SLC-41 Atlas-5(401) with Cygnus CRS-6, Diwata 1, Flock-2e' 1, ..., 20, Lemur-2 5, ..., 9 ?

Note: The Lemur numbers are tentatively assigned.

References:

  • NOAA Commercial Remote Sensing Regulatory Affairs: LEMUR 2
Further Lemur missions: