# SVOM 3D model

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

Free 3D model of SVOM, a space telescope, built from published dimensions by Space Radar. 19,144 triangles, 151 kB glTF, MIT.

- **Class:** Space telescopes
- **Mission:** Astronomy
- **Triangles:** 19,144
- **File:** svom.glb, 151 kB, glTF 2.0 binary (meshopt)
- **Look:** Flat colours
- **Size:** 3.6 m across
- **Made:** Built from dimensions
- **Added:** 2026-11-03
- **NORAD:** 60089
- **Download:** https://raw.githubusercontent.com/Sara-Managed-Projects/space-radar/main/site/models/svom.glb
- **Mirror:** https://git.sara-agent.org/sara-projects/space-radar/raw/branch/main/site/models/svom.glb
- **Viewer:** https://www.spaceradar.ai/model/?id=svom
- **On the live map:** https://www.spaceradar.ai/#at=sat-60089
- **Licence:** MIT (https://github.com/Sara-Managed-Projects/space-radar/blob/main/LICENSE)
- **Credit:** SVOM 3D model by Space Radar (spaceradar.ai), MIT License

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

## 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 mission papers' published numbers for SVOM and from pictures of it by CNES and the SVOM collaboration (looked at, not used).

built by this project in code (the private tool model-from-images: assemble.py, from a yaml of primitives, object `telescope-svom`), from the cited numbers and the pictures under `references`; no image-to-3D model was used, and no published mesh of the craft (NASA's 3D Resources on GitHub and CNES's pages carry none; the pictures CNES and the SVOM collaboration publish are not free to derive from, so they were looked at only)

## Dimensions

- Mass: 930 kg
- Payload mass: 450 kg
- Orbit: 625 km
- Inclination: 30°
- Eclairs mask: 0.54 m
- Eclairs mask pixels: 46
- Eclairs mask above detectors: 0.46 m
- Grd diameter: 0.16 m
- Grd tilt: 30°
- Mxt focal length: 1.15 m
- Mxt optics: 0.2 m
- Vt diameter: 0.44 m
- Vt focal length: 3.6 m

Source: Cordier et al., 'The SVOM mission: its profile and its system', Research in Astronomy and Astrophysics, https://arxiv.org/abs/2604.24257, OPENED 2026-11-03 (Table 1): 'MXT ... Focal length 1150 mm; Optics dimension 200 mm (side)'; 'VT ... 3600 mm; 440 mm (diameter)'; 'GRM ... 3 modules'; 'ECLAIRs ... 6400 detectors ... Mask open fraction: 40%'; 'an inclination of 30o, an altitude of 625 km'; 'the optical axis of the SVOM instruments points 45o offset from the anti-solar direction'. Schanne et al., 'The ECLAIRs GRB-trigger telescope on-board the future mission SVOM', https://arxiv.org/abs/1508.05851, OPENED 2026-11-03: 'A coded mask is placed 46 cm above the CdTe detection plane'; 'a self-supporting pattern of 46x46 square pixels of size m=11.47 mm among which 40% are empty of matter'; 'A passive graded side-shield made of Pb, Cu and Al encloses the ECLAIRs TXG'. N. Leroy for the SVOM consortium, GDR OG assembly, Toulouse 2022 (slides), https://indico.in2p3.fr/event/27290/sessions/17075/attachments/73196/105010/SVOM_GDROG2022.pdf, OPENED 2026-11-03: '54x54 cm2 coded mask'; '3 Gamma-Ray Detectors (GRDs) NaI(Tl) (16 cm O, 1.5 cm thick)'; '30 deg inclination w.r.t. ECLAIRs optical axis'. svom.eu, 'The SVOM mission', https://www.svom.eu/en/the-svom-mission/, OPENED 2026-11-03: 'The satellite weighs a total of 930 kg for a payload of 450 kg.' en.wikipedia 'Space Variable Objects Monitor', OPENED 2026-11-03, gives '2.5 x 2.8 m' and says nothing of what it measures (body, stowed envelope or deployed): NOT USED. NOT CITED, READ OFF THE PICTURES AND ESTIMATED, scaled from the 0.54 m mask and the 0.44 m VT: the body (1.35 m along the wing axis by 1.80 m, a platform 0.90 m high and a payload module 0.55 m, 2.35 m with the adapter and the instruments), the place of every instrument on the deck, the sizes of the MXT drum (0.38 m), the VT barrel (0.5 m) and the GRM housings (0.25 m), the adapter ring (1.0 m) and its ribs, the radiator panels, the antennas, and the SOLAR WINGS: three panels of about 0.65 m by 1.15 m each side, 5.5 m tip to tip. NO PAGE OPENED GIVES THE WINGS' SIZE OR THE BODY'S: the wings are the least certain part of the file.

## References

- [SVOM from 'Target of Opportunity' video](https://commons.wikimedia.org/wiki/File:SVOM_from_%27Target_of_Opportunity%27_video.jpg), CNES/GEKO (CC BY-SA 3.0 (CNES/GEKO, 2019; Commons, read 2026-11-03): looked at only)
- [svom.eu, 'The SVOM mission'](https://www.svom.eu/en/the-svom-mission/), SVOM collaboration (CNES) (no licence stated (CNES / SVOM collaboration): looked at only)
- [svom.eu, news of June 2024, October 2023, May 2023 and the qualification model (2019)](https://svom.eu/?p=4804), SVOM collaboration; CNES; IAM CAS; SECM (photographs credited CNES, IAM CAS, SECM and the SVOM collaboration, no licence stated: looked at only)
- [ECLAIRs coded mask](https://commons.wikimedia.org/wiki/File:ECLAIRs_coded_mask.jpg), Sinucep (CC BY-SA 4.0 (Sinucep, 2023; Commons, read 2026-11-03): looked at only)