# Lucy 3D model

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

Free 3D model of Lucy, a deep-space probe, built from published dimensions by Space Radar. 3,210 triangles, 26 kB glTF, MIT.

- **Class:** Deep-space probes
- **Mission:** Planetary science
- **Triangles:** 3,210
- **File:** lucy.glb, 26 kB, glTF 2.0 binary (meshopt)
- **Look:** Flat colours
- **Size:** 16 m across
- **Made:** Built from dimensions
- **Added:** 2026-10-20
- **Download:** https://raw.githubusercontent.com/Sara-Managed-Projects/space-radar/main/site/models/lucy.glb
- **Mirror:** https://git.sara-agent.org/sara-projects/space-radar/raw/branch/main/site/models/lucy.glb
- **Viewer:** https://www.spaceradar.ai/model/?id=lucy
- **On the live map:** https://www.spaceradar.ai/#at=deep-lucy
- **Licence:** MIT (https://github.com/Sara-Managed-Projects/space-radar/blob/main/LICENSE)
- **Credit:** Lucy 3D model by Space Radar (spaceradar.ai), MIT License

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

## 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 NASA pictures (public domain).

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 Science's 3D models, 100 resources listed 2026-10-15, and NASA's 3D Resources, 1 583 paths, have none of this craft); NASA's and JPL's own pictures (public domain) were looked at for the layout and are not in the file; the instrument platform's description is Olkin et al. 2021 (CC BY 4.0)

## Dimensions

- Tip to tip: 16 m
- Array diameter: 7.3 m
- Hga: 2 m
- Bus: 1.9 m
- Bus height: 2.7 m
- Bus depth: 1.8 m

Source: NASA Science, 'Lucy Spacecraft', https://science.nasa.gov/mission/lucy/spacecraft/, OPENED 2026-10-15: 'The Lucy spacecraft is more than 52 feet (16 meters) from tip to tip when its solar arrays are deployed.'; 'Most of Lucy's size comes from its huge solar panels, each close to 24 feet (7 meters) in diameter.'; 'In addition to these instruments, Lucy has a 6.5-foot-wide (2-meter) high gain antenna which will serve as the primary communications relay between the spacecraft and Earth.' eoPortal, https://www.eoportal.org/satellite-missions/lucy, OPENED 2026-10-15: 'Diameter of solar panels: 7.3 m (use of 2 solar panels)'; 'deployed two large circular solar arrays, each 7.3 meters in diameter. The arrays are designed to unfurl like fans and latch into place. While one array, called -Y, did completely unfurl and latch, the other, +Y, did not latch into place .'; 'The Lucy spacecraft will be over 13 m from tip to tip' (an older figure; NASA's 16 m is built). Olkin et al. 2021, 'The Lucy Mission to the Trojan Asteroids: Instrumentation and Encounter Concept of Operations', PSJ 2:172, https://iopscience.iop.org/article/10.3847/PSJ/abf83f (CC BY 4.0), OPENED 2026-10-15: 'Lucy’s scientific instruments and the terminal tracking cameras are mounted on an IPP (Figure 3 ) which is connected to the spacecraft by a two-axis gimbal.' OURS: the bus (1.9 x 2.7 x 1.8 m, read off NASA's illustration against the 2 m dish), the IPP's size and place, the hubs' place, the ten gores (counted on NASA's illustration).

## References

- [Illustration of the deployed Lucy spacecraft](https://commons.wikimedia.org/wiki/File:Illustration_of_the_deployed_Lucy_spacecraft.jpg), NASA (Public domain (NASA, Lucy press kit; Commons' LicenseShortName, read 2026-10-15))
- [Lucy-ArtistsConcept](https://commons.wikimedia.org/wiki/File:Lucy-ArtistsConcept.jpg), NASA/SwRI (Public domain (NASA/SwRI; Commons' LicenseShortName, read 2026-10-15))
- [Lucy Spacecraft Will Slingshot Around Earth (SVS14225)](https://commons.wikimedia.org/wiki/File:Lucy_Spacecraft_Will_Slingshot_Around_Earth_(SVS14225).png), NASA's Scientific Visualization Studio (Public domain (NASA's Scientific Visualization Studio; Commons' LicenseShortName, read 2026-10-15))