CSG 1 [Thales Alenia]
Official name CSG-1
Alternative name CSG 1
Cospar ID 2019-092A
Norad ID 44873
Launch date 2019-12-18
Launch site FRGUI
Launch vehicle Soyuz-ST-A Fregat-M
Country/Organization Italy
Type application Earth observation (Radar)
Operator ASI
RCS size LARGE
Decay date ON ORBIT
Period (min) 97.16
Inclination (deg) 97.89
Perigee (km) 622
Apogee (km) 623
Eccentricity 0.000803212851405623
Mean motion (revs. per day) 14.8209139563606
Semi-Major axis (km) 7000.635
Raan (deg) 313.8936
Arg of perigee (deg) 94.1997
Shape Box + 3 Pan
Mass (kg) 2205
Height (m) 1.4
Width (m) 1.4
Depth (m) 1.4
Lifetime 7 years
Contractors Tales Alenia Space
Equipment CSG-SAR X-band (9.6 GHz) synthetic aperture radar (SAR)
Configuration Prima Bus
Power 2 deployable solar arrays, batteries

COSMO-SkyMed second generation (Constellation of Small Satellites for Mediterranean basin observation) or CSG is an Earth observation program of the Italian Space Agency (ASI) to replace the first generation COSMO-SkyMed system.

For the second generation, the COSMO-SkyMed constellation has been reduced from four to two spacecraft. The satellites are improved versions of the original design. They utilze an improved version of the Prima Bus. The CSG-SAR (COSMO-SkyMed Second Generation Synthetic Aperture Radar) is also an improved version of the first generation X-band SAR system. The contract was signed in September 2015. In December 2020, another two satellites were ordered.

The satellites will operate in the same circular sun-synchronous dawn-dusk orbit as the first generation satellites with a nominal altitude of 619 km and an inclination of 97.86º. The satelites operate in the same orbital plane.

Satellite COSPAR Date LS Launch Vehicle Remarks
CSG-1 2019-092A 2019-12-18 FRGUI Soyuz-ST-A Fregat-M with CHEOPS, ANGELS, Eye-Sat, OPS-SAT
CSG-2 2022-008A 2022-01-31 AFETR Falcon-9 v1.2 (Block 5)