# CBERS-4 3D model

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

Free 3D model of CBERS-4, a satellite, built from published dimensions by Space Radar. 7,850 triangles, 46 kB glTF, MIT.

- **Class:** Satellites
- **Mission:** Earth observation
- **Triangles:** 7,850
- **File:** cbers-4.glb, 46 kB, glTF 2.0 binary (meshopt)
- **Look:** Flat colours
- **Size:** 6.3 m across
- **Made:** Built from dimensions
- **Added:** 2026-10-27
- **NORAD:** 40336
- **Download:** https://raw.githubusercontent.com/Sara-Managed-Projects/space-radar/main/site/models/cbers-4.glb
- **Mirror:** https://git.sara-agent.org/sara-projects/space-radar/raw/branch/main/site/models/cbers-4.glb
- **Viewer:** https://www.spaceradar.ai/model/?id=cbers-4
- **On the live map:** https://www.spaceradar.ai/#at=sat-40336
- **Licence:** MIT (https://github.com/Sara-Managed-Projects/space-radar/blob/main/LICENSE)
- **Credit:** CBERS-4 3D model by Space Radar (spaceradar.ai), MIT License

Canonical: https://models.spaceradar.ai/cbers-4/

## 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 and INPE's photographs of CBERS-4 (CBERS/INPE – Divulgação).

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 (1 583 paths, read 2026-10-27) has none of these craft, and no agency named here publishes a model of its own under terms that allow one

## Dimensions

- Folded height: 3.25 m
- Folded diameter: 3.35 m
- Array: 6.3 × 2.6 m
- Mass: 1980 kg

Source: eoPortal, https://www.eoportal.org/satellite-missions/cbers-3-4, OPENED 2026-10-27: 'The spacecraft consists of a hexahedron shaped structure divided in service and payload modules'; 'In the orbital configuration, the Z axis is pointed to nadir (Earth's surface). The cameras and antennas are mounted on the +Z side panel. The solar panel is mounted on the -Y side panel and rotates around the Y axis.'; 'The nominal payload capability of the platform is ~1000 kg; the mass of the entire spacecraft is ~1980 kg. In its folded (launch) configuration, the dimensions are: 3.25 m in height and 3.35 m in diameter'; the array's 6.3 x 2.6 m from INPE/CAST's text as NASASpaceflight reproduces it (https://www.nasaspaceflight.com/2014/12/200th-long-march-launches-cbers-4-brazil/). OURS: the body's 2.0 x 2.0 m plan and the split of the 3.25 m into two modules and a step, every patch's place, the cameras' boxes, the antennas' places.

## References

- [CBERS-4 001, 010, 016 and 017: CBERS-4 being prepared in China](https://commons.wikimedia.org/wiki/File:CBERS-4_001.jpg), CBERS/INPE – Divulgação (INPE's gallery: 'Todas as imagens poderão ser reproduzidas, desde que citada a fonte: CBERS/INPE – Divulgação' (all images may be reproduced if the source is cited; the Commons file's own licence text, read 2026-10-27))