# COSMO-SkyMed Second Generation 3D model

> Shape built from published dimensions and pictures; details simplified.

Free 3D model of COSMO-SkyMed Second Generation, a satellite, built from published dimensions by Space Radar. 12,780 triangles, 65 kB glTF, MIT.

- **Class:** Satellites
- **Mission:** Earth observation
- **Triangles:** 12,780
- **File:** csg.glb, 65 kB, glTF 2.0 binary (meshopt)
- **Look:** Flat colours
- **Size:** 5.7 m across
- **Made:** Built from dimensions
- **Added:** 2026-11-05
- **NORAD:** 44873
- **Download:** https://raw.githubusercontent.com/Sara-Managed-Projects/space-radar/main/site/models/csg.glb
- **Mirror:** https://git.sara-agent.org/sara-projects/space-radar/raw/branch/main/site/models/csg.glb
- **Viewer:** https://www.spaceradar.ai/model/?id=csg
- **On the live map:** https://www.spaceradar.ai/#at=sat-44873
- **Licence:** MIT (https://github.com/Sara-Managed-Projects/space-radar/blob/main/LICENSE)
- **Credit:** COSMO-SkyMed Second Generation 3D model by Space Radar (spaceradar.ai), MIT License

Canonical: https://models.spaceradar.ai/csg/

## How it was made

Built in code from published dimensions and photographs, with no image-to-3D generator and no one else’s mesh. 3D model: built by Space Radar from published dimensions (eoPortal, ESA) and TAS-I's and ESA's pictures of COSMO-SkyMed Second Generation, looked at for the layout.

built by this project in code (the private tool model-from-images: assemble.py, from a yaml of primitives), from the cited dimensions and the pictures under `references`; no image-to-3D model was used, and no published mesh (NASA's 3D Resources on GitHub, 1 583 paths read 2026-11-05, has only RADARSAT-1 of the radar craft and none of this one; the survey of 2026-11-05 found no agency model of it under usable terms)

## Dimensions

- Antenna long: 5.7 m
- Antenna wide: 1.4 m
- Bus section: 1.9 m
- Bus height: 3.4 m
- Wing long: 5.6 m
- Wing wide: 2 m

Source: eoPortal, https://www.eoportal.org/satellite-missions/cosmo-skymed-second-generation, OPENED 2026-11-05: the table 'SAR antenna sizes 5.7 m x 1.4 m' (for the second generation and the first); 'The SAR antenna modular design consists of ten identical “macro tiles”'; 'Each spacecraft has a mass of 2230 kg'; 'PRIMA platform: CSG platform is based on the PRIMA concept which foresees three main modules structurally and functionally decoupled'; 'The spacecraft features a 3-axis stabilization system with gyro, sun sensors and STT (Star Tracker), a set of 4 reaction wheels, a CMG (Control Moment Gyro) assembly and 3 torque rods'. NO PAGE GIVES THE BUS OR THE ARRAYS IN METRES, and the page gives no solar-array area. READ OFF TAS-I'S DRAWING BY THE CITED 5.7 m: a bus about 1.9 m square and 3.4 m high; two wings of four panels, 5.6 m by 2.0 m each (a little longer than the antenna), on a frame 1.1 m long. OURS: those numbers, the colour of the antenna's face (bronze, after ESA's render), the ring's size, the frame's shape (five rods and two gussets for what is a plate with a hexagonal hole), the sun sensors, the darker foil band.

## References

- [The satellite architecture in deployed configuration (eoPortal, COSMO-SkyMed Second Generation page)](https://www.eoportal.org/satellite-missions/cosmo-skymed-second-generation), TAS-I (all rights reserved by Thales Alenia Space Italia, as shown on eoPortal (ESA); looked at, not reproduced)
- [The SAR antenna's panels (eoPortal, COSMO-SkyMed Second Generation page)](https://www.eoportal.org/satellite-missions/cosmo-skymed-second-generation), TAS-I (all rights reserved by Thales Alenia Space Italia, as shown on eoPortal (ESA); looked at, not reproduced)
- [COSMO-SkyMed Second Generation satellite (eoPortal, the page's lead image)](https://www.eoportal.org/satellite-missions/cosmo-skymed-second-generation), ESA (all rights reserved by ESA, as shown on eoPortal; looked at, not reproduced)