# I-2K satellite bus 3D model

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

Free 3D model of I-2K satellite bus, a satellite, built from published dimensions by Space Radar. 10,716 triangles, 84 kB glTF, MIT.

- **Class:** Satellites
- **Mission:** Communications
- **Triangles:** 10,716
- **File:** bus-i-2k.glb, 84 kB, glTF 2.0 binary (meshopt)
- **Look:** Physically based
- **Size:** 9.6 m across
- **Made:** Built from dimensions
- **Added:** 2026-11-08
- **Download:** https://raw.githubusercontent.com/Sara-Managed-Projects/space-radar/main/site/models/bus-i-2k.glb
- **Mirror:** https://git.sara-agent.org/sara-projects/space-radar/raw/branch/main/site/models/bus-i-2k.glb
- **Viewer:** https://www.spaceradar.ai/model/?id=bus-i-2k
- **Licence:** MIT (https://github.com/Sara-Managed-Projects/space-radar/blob/main/LICENSE)
- **Credit:** I-2K satellite bus 3D model by Space Radar (spaceradar.ai), MIT License

Canonical: https://models.spaceradar.ai/bus-i-2k/

## 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 (McDowell's GCAT, Wikipedia); layout read from the makers' photographs and renders, looked at only.

built by this project in code (tools/bus-builder, release 2.0.0 batch m4-buses) from published sizes, with the photographs and the maker's renders under `references` LOOKED AT ONLY; no image-to-3D model was used and no published mesh (NASA 3D Resources has none of this bus)

## Dimensions

- Body x: 1.65 m
- Body y: 1.53 m
- Body z: 3 m
- Span: 9.6 m
- Reflector: 2 m

Source: Wikipedia 'INSAT Satellite bus' (read 2026-11-07): the I-2K '1.65 * 1.53m in plan & 3.0m in height'. GCAT: Span 9.0 to 12 m (median 9.5). Drawn: a box 1.65 x 1.53 x 3.0 m, 9.6 m over the wings. GSAT-31's photographs show a longer wing than its GCAT span; the file draws GCAT's. OURS (ESTIMATED): the reflectors' 2.0 and 1.4 m and their arms and tilts, two panels of 1.5 x 1.55 m a wing, the yoke.

## References

- [GSAT-31 undergoing CATF test.jpg](https://commons.wikimedia.org/wiki/File:GSAT-31_undergoing_CATF_test.jpg), ISRO (GODL-India (ISRO; Commons LicenseShortName, read 2026-11-07) (Commons LicenseShortName, read 2026-11-07))
- [GSAT-31 reflector deployment test.jpg](https://commons.wikimedia.org/wiki/File:GSAT-31_reflector_deployment_test.jpg), ISRO (GODL-India (ISRO; Commons LicenseShortName, read 2026-11-07) (Commons LicenseShortName, read 2026-11-07))
- [GSAT-31 during north solar panel deployment test.jpg](https://commons.wikimedia.org/wiki/File:GSAT-31_during_north_solar_panel_deployment_test.jpg), ISRO (GODL-India (ISRO; Commons LicenseShortName, read 2026-11-07) (Commons LicenseShortName, read 2026-11-07))
- [GSAT-9 (Gunter's Space Page)](https://space.skyrocket.de/doc_sdat/gsat-9.htm), ISRO, via Gunter's Space Page (Gunter D. Krebs) (copyright ISRO (a maker's render; looked at only, no part of it is in a file))
- [GSAT-14 (Gunter's Space Page)](https://space.skyrocket.de/doc_sdat/gsat-14.htm), ISRO, via Gunter's Space Page (Gunter D. Krebs) (copyright ISRO (a maker's render; looked at only, no part of it is in a file))
- [Hylas 1 (Gunter's Space Page)](https://space.skyrocket.de/doc_sdat/hylas.htm), ISRO / Antrix, via Gunter's Space Page (Gunter D. Krebs) (copyright ISRO / Antrix (a maker's render; looked at only, no part of it is in a file))
- [Wikipedia: INSAT Satellite bus](https://en.wikipedia.org/wiki/INSAT_Satellite_bus), Wikipedia contributors (CC BY-SA 4.0 (the numbers are facts; nothing else is copied))
- [General Catalog of Artificial Space Objects (GCAT), satcat.tsv of 2026-11-07](https://planet4589.org/space/gcat/tsv/cat/satcat.tsv), Jonathan C. McDowell (CC BY 4.0 (the catalogue's own statement))