Lemur-2 18-21

USA

Spacecraft nº:

US spacecraft nº:

Launch data:

Designation	16076 (see table)
Launch date	09 Dec 2016 - 13:26 UT
Launch site	Tanegashima, YLP-2
Launch vehicle	H-2B-304
Mission	AIS/Met-RO

Lemur-2

Launched together with: HTV-6 - Lemur-2 18-21 - TechEdSat 5 - EGG - TuPOD - AOBA-VELOX 3 - STARS C - FREEDOM - ITF 2 - Waseda-SAT 3 - OSNSAT - Tancredo

Spacecraft data:

Prime manufacturer
Platform
Operator
Mass at launch	kg
Dry Mass	kg
Basic shape
Dimension (m)
Equipment
Solar array
Stabilization
Propulsion
DC power
Design lifetime

>

	Lemur-2 18 (Trutna)	Lemur-2 19 (TrutnaHD)	Lemur-2 20 (Austintacious)	Lemur-2 21 (Redfern-Goes)
Norad ID	42067	42069	42068	42059
Int. code	98067LC	98067LE	98067LD	98067LA
Deployment date	06 Mar 2017 - 10:25 UT	06 Mar 2017 - 10:25 UT	06 Mar 2017 - 15:05 UT	06 Mar 2017 - 15:05 UT
Earth orbit:
Perigee / Apogee	396 x 409 km	396 x 409 km	396 x 409 km	396 x 409 km
Inclination	51.6 deg	51.6 deg	51.6 deg	51.6 deg
Period	min	min	min	min
Decay	15 Apr 2018 (.1)	13 Nov 2018	04 Oct 2018 (.1)	05 Dec 2018

Mission details:

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 GPS radio occultation 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.

Ref.: #3(SD546,552,553,554), #7(JR737), #228 - update: 25.08.19