# Hera 3D model

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

Free 3D model of Hera, a deep-space probe, built from published dimensions by Space Radar. 4,180 triangles, 28 kB glTF, MIT.

- **Class:** Deep-space probes
- **Mission:** Planetary science
- **Triangles:** 4,180
- **File:** hera.glb, 28 kB, glTF 2.0 binary (meshopt)
- **Look:** Flat colours
- **Size:** 12 m across
- **Made:** Built from dimensions
- **Added:** 2026-10-20
- **Download:** https://raw.githubusercontent.com/Sara-Managed-Projects/space-radar/main/site/models/hera.glb
- **Mirror:** https://git.sara-agent.org/sara-projects/space-radar/raw/branch/main/site/models/hera.glb
- **Viewer:** https://www.spaceradar.ai/model/?id=hera
- **On the live map:** https://www.spaceradar.ai/#at=deep-hera
- **Licence:** MIT (https://github.com/Sara-Managed-Projects/space-radar/blob/main/LICENSE)
- **Credit:** Hera 3D model by Space Radar (spaceradar.ai), MIT License

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

## 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 ESA's published dimensions and a figure by Michel et al. 2022 (CC BY 4.0).

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); NO ESA PICTURE OR MODEL IS IN THE FILE: ESA's published numbers were read as numbers. ESA's terms for the images on its site, read 2026-10-15 (https://www.esa.int/ESA_Multimedia/Terms_and_Conditions): 'The website of the European Space Agency (the ESA Website) provides to users an online access to space images and videos for education, editorial and/or information purposes only. All other uses (e.g. commercial ones) are excluded and require a specific licence.' The layout was read off Figure 6 of Michel et al. 2022 (CC BY 4.0, credited under references); ESA's labelled image of the craft carries the 'ESA Standard Licence' and was looked at only

## Dimensions

- Body: 1.6 m
- Body height: 1.7 m
- Span: 11.5 m
- Wing: 5 m
- Array area: 14 m²
- Hga: 1.13 m

Source: ESA, 'Hera spacecraft', https://www.esa.int/ESA_Multimedia/Images/2026/08/Hera_spacecraft, OPENED 2026-10-15: 'Hera measures approximately 1.6 m across per side, plus solar arrays that stretch 11.5 m across when fully deployed.'; '(C) High Gain Antenna, HGA- This 1.13-m diameter X-band antenna'; '(E1 & E2) Solar Arrays- Two 5-m long wings, made up of three hinged panels each, adding up to 14 square metres, with more than 1600 solar cells.'; '(F) Orbit Control Thrusters - Oriented in a circle on Hera's underside'; '(B) Reaction Control Thrusters - Two placed on each corner of the Hera spacecraft'; '(A) Asteroid Deck - Hosting all onboard instruments .' ESA, 'Hera's wings of power', OPENED 2026-10-15: 'The van-sized spacecraft is equipped with two 5-m long wings, made up of three hinged panels each.' Michel et al. 2022, https://iopscience.iop.org/article/10.3847/PSJ/ac6f52 (CC BY 4.0), OPENED 2026-10-15: 'Its architecture is based on a central tube and adapter cone. It is powered by 13 m 2 of solar panels. It is equipped with a fixed high-gain antenna and two low-gain antennas.' Wikipedia (for the height only): 'The main bus of Hera has a box-shape based on a central tube and adapter cone of 1.6 × 1.6 × 1.7 meters.' DERIVED: each panel 1.37 x 1.7 m. OURS: the instruments' sizes, the yoke's 0.9 m, the dish's place on its face.

## References

- [Hera spacecraft design](https://commons.wikimedia.org/wiki/File:Hera_spacecraft_design.jpg), P. Michel et al. 2022, CC BY 4.0 (CC BY 4.0 (P. Michel et al., 'The ESA Hera Mission: Detailed Characterization of the DART Impact Outcome and of the Binary Asteroid (65803) Didymos', PSJ 3:160 (2022), Figure 6; Commons' LicenseShortName, read 2026-10-15))
- [Hera_spacecraft](https://www.esa.int/ESA_Multimedia/Images/2026/08/Hera_spacecraft), ESA-Science Office (ESA Standard Licence (the page's own line, read 2026-10-15): LOOKED AT ONLY for the colours, never fetched by the tool and not on any sheet)