# Swarm 3D model

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

Free 3D model of Swarm, a satellite, built from published dimensions by Space Radar. 1,770 triangles, 32 kB glTF, MIT.

- **Class:** Satellites
- **Mission:** Earth observation
- **Triangles:** 1,770
- **File:** swarm.glb, 32 kB, glTF 2.0 binary (meshopt)
- **Look:** Physically based
- **Size:** 9.1 m across
- **Made:** Built from dimensions
- **Added:** 2026-10-21
- **NORAD:** 39451, 39452, 39453
- **Download:** https://raw.githubusercontent.com/Sara-Managed-Projects/space-radar/main/site/models/swarm.glb
- **Mirror:** https://git.sara-agent.org/sara-projects/space-radar/raw/branch/main/site/models/swarm.glb
- **Viewer:** https://www.spaceradar.ai/model/?id=swarm
- **On the live map:** https://www.spaceradar.ai/#at=sat-39451
- **Licence:** MIT (https://github.com/Sara-Managed-Projects/space-radar/blob/main/LICENSE)
- **Credit:** Swarm 3D model by Space Radar (spaceradar.ai), MIT License

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

## 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 eoPortal's published dimensions.

built by this project in code (release 1.3.0 stage W3-b's part library, lib.py and parts.py, and one script a craft, kept with the stage's notes in ~/space-radar-handoff/release-1.3/W3-b/build), from the cited dimensions, the layout read off the pictures under `references`, which are not in the file and were not traced; no image-to-3D model was used, and no published mesh: NASA's 3D Resources and NASA Science have none of these craft; ESA publishes no model of them under terms that allow a derivative (its multimedia terms, the ESA Standard Licence, allow use for information and education, not an altered model); EUMETSAT publishes none (read 2026-10-20)

## Dimensions

- Length: 9.1 m
- Width: 1.5 m
- Height: 0.85 m
- Boom: 4.3 m

Source: eoPortal, Swarm, https://www.eoportal.org/satellite-missions/swarm, OPENED 2026-10-20: 'Length: 9.1 m; width: 1.5 m (S/C body); height: 0.85 m; ram surface: ~0.7 m2'; 'a 4.3m long CFRP tube' (its table says 5.1 m for the boom: we built 4.3 m, the deployable section's own figure); 'The scalar magnetometer and optical bench are fixed to a deployable large beam of square cross section'; the 'ultra-stable connection between VFM (Vector Field Magnetometer) and STR (Star Tracker) assembly on the optical bench'; 'The two body-mounted solar arrays'. Wikipedia, Swarm (spacecraft), OPENED 2026-10-14 by the issue: '9.1 m x 1.5 m x 0.85 m'. OURS: the body 4.6 m of the 9.15 m drawn, its taper (1.5 m wide at the ram face to 0.62 m at the back), the step in the arrays' lower edge, the ridge, the bench 55 percent along the boom, every instrument's size

## References

- [Swarm constellation in IABG cleanroom](https://www.esa.int/ESA_Multimedia/Images/2012/02/Swarm_constellation_in_IABG_cleanroom), ESA (ESA Standard Licence; looked at only)
- [Swarm with boom open](https://www.esa.int/ESA_Multimedia/Images/2011/10/Swarm_with_boom_open), ESA (ESA Standard Licence; looked at only)
- [Front of Swarm satellite](https://www.esa.int/ESA_Multimedia/Images/2014/02/Front_of_Swarm_satellite), ESA (ESA Standard Licence; looked at only)