# TRACERS 3D model

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

Free 3D model of TRACERS, a satellite, built from published dimensions by Space Radar. 6,976 triangles, 69 kB glTF, MIT.

- **Class:** Satellites
- **Mission:** Technology and science
- **Triangles:** 6,976
- **File:** tracers.glb, 69 kB, glTF 2.0 binary (meshopt)
- **Look:** Physically based
- **Size:** 3.0 m across
- **Made:** Built from dimensions
- **Added:** 2026-10-21
- **NORAD:** 64870, 64873
- **Download:** https://raw.githubusercontent.com/Sara-Managed-Projects/space-radar/main/site/models/tracers.glb
- **Mirror:** https://git.sara-agent.org/sara-projects/space-radar/raw/branch/main/site/models/tracers.glb
- **Viewer:** https://www.spaceradar.ai/model/?id=tracers
- **On the live map:** https://www.spaceradar.ai/#at=sat-64870
- **Licence:** MIT (https://github.com/Sara-Managed-Projects/space-radar/blob/main/LICENSE)
- **Credit:** TRACERS 3D model by Space Radar (spaceradar.ai), MIT License

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

## 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 the TRACERS team's published dimensions; compared with NASA's turntable (public domain).

built by this project in code (release 1.3.0 stage W3-a's part library, lib.py, and one script a craft, kept with the stage's notes); no image-to-3D model was used, and no published mesh: NASA's 3D Resources (1 583 paths) and NASA Science's 3D models have none of this craft (read 2026-10-20)

## Dimensions

- Across flats: 1.06 m
- Height: 0.92 m
- Efi boom: 3 m
- Mag bracket: 0.7 m

Source: Miles et al. 2025, The TRACERS Mission, Space Sci. Rev. 221:61 (https://pmc.ncbi.nlm.nih.gov/articles/PMC12204947/), OPENED 2026-10-20: 'Solar arrays are positioned on each of the 8 side panels and -Z decks'; 'The MSC, MAG, and MAGIC sensors are accommodated on 70 cm fixed brackets'; 'The EFI sensors are deployed on 3-m Stacer booms'; 'spin axis are aligned with the background magnetic field'. Bonnell et al. 2025, The EFI for the TRACERS Mission (https://pmc.ncbi.nlm.nih.gov/articles/PMC12420696/): 'an 8-cm diameter graphite-coated (DAG-213) Aluminum sphere'; 'an exposed length of three (3) meters'; 'opposite sensors separated by 7 meters'. THE FOUR EFI BOOMS ARE DRAWN SHORT, illustrative: 1.25 m of their 3 m, because the app scales a model's longest side to one unit and at 7 m the 1 m body would be a dot. OURS: the body 1.06 m across the flats and 0.92 m tall (University of Iowa drawings, looked at only, and the EFI geometry), the -Z deck, the antenna patches, the cell gaps

## References

- [TRACERS spacecraft turntable (30fps 4k)](https://commons.wikimedia.org/wiki/File:TRACERS_spacecraft_turntable_(30fps_4k).webm), NASA/Goddard Conceptual Image Lab (Public domain (NASA; Commons LicenseShortName, read 2026-10-20))
- [SpaceX TRACERS Rideshare Encapsulation (KSC-20250717-PH-SPX01_0001)](https://commons.wikimedia.org/wiki/File:SpaceX_TRACERS_Rideshare_Encapsulation_(KSC-20250717-PH-SPX01_0001).jpg), SpaceX (CC0 (Commons LicenseShortName, read 2026-10-20))
- [Satellite TRACERS de la NASA - Schema position et source des instruments scientifiques](https://commons.wikimedia.org/wiki/File:Satellite_TRACERS_de_la_NASA_-_Sch%C3%A9ma_position_et_source_des_instruments_scientifiques-fr.png), NASA (Public domain (NASA; Commons LicenseShortName, read 2026-10-20))