Official name GMS-T
Alternative name GMS-T
Cospar ID 2021-004A
Norad ID 47346
Launch date 2021-01-20
Launch site RLLC
Launch vehicle Electron KS
Country/Organization China / Germany ?
Type application Communications (BIU), technology
Operator OHB Cosmos International, GMS
RCS size MEDIUM
Decay date ON ORBIT
Period (min) 109.37
Inclination (deg) 90.08
Perigee (km) 1196
Apogee (km) 1199
Eccentricity 0.00125260960334029
Mean motion (revs. per day) 13.1663161744537
Semi-Major axis (km) 7575.635
Raan (deg) 234.251
Arg of perigee (deg) 24.6019
Shape Box + 1 Pan
Mass (kg) 50
Height (m) 1
Width (m) 0.5
Depth (m) 0.5
Span (m^2) 3
Contractors OHB Group
Equipment Ku- and Ka-band transponders
Propulsion Enpulsion Micro-R³
Configuration InnoSat-Small
Power Solar cells, batteries

GMS-T is a prototype LEO broadband communications satellite to enable specific frequencies to support future services from orbit.

The Chinese GMS Space (or Shanghai Spacecom Satellite Technology) is a daughter of the Chinese investor GMS, which is also a stakeholder of the German KLEO Connect. Reportedly GMS Space is copying the business model of KLEO Connect and using their knowhow, ITU filings and satellite designs. Reportedly the satellite and its launch was ordered from OHB Group?s satellite manufacturers based in Germany, Sweden, and Czech Republic, either from KLEO Connect or using KLEO's funding. How GMS and KLEO Connect and their satellite systems are connected is not clear. The satellite is being operated by OHB.

The mission is to bring in use (BIU) reserved frequencies for the planned communications satellite constellation. These Frequencies had been reserved by Thales Alenia Space for the failed LeoSat constellation and were to expire in late January 2021.

The satellite is built on OHB Sweden's InnoSat-light platform and has an Empulsion Micro-R3 propulsion system for collision avoidance.

It was launched in January 2021 on a Electron KS rocket, which was contracted via OHB Cosmos. After reaching orbit, OHB announced that they will slightly modify the orbit to further distance it from the OneWeb constellation to decrease the collision risk.

Satellite COSPAR Date LS Launch Vehicle Remarks
GMS-T 2021-004A 2021-01-20 RLLC Electron KS