I-2K satellite bus
Shape built from published dimensions and pictures; details simplified.
Turn it in 3D
Open the 3D viewer (www.spaceradar.ai).
The viewer loads when you ask: about 700 kB the first time (three.js and the model), much less after.
Pictures 4
Three-quarter view
From the side
From behind
From above
About this model
I-2K satellite bus is one of the 203 3D models Space Radar made itself: a satellite, built in code from published dimensions and photographs, with no image-to-3D generator and no one else’s mesh.
Shape built from published dimensions and pictures; details simplified. It has 10,716 triangles in a 84 kB glTF file, and is 9.6 m across at full scale.
It is part of the map’s library; no object on the live map is drawn with it today.
Dimensions and their sources
| Measure | Value |
|---|---|
| Body x | 1.65 m |
| Body y | 1.53 m |
| Body z | 3 m |
| Span | 9.6 m |
| Reflector | 2 m |
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. (read 2026-11-07)
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.
The full record
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)
Where the map uses it. the 6 satellites registry/geo-buses.yaml names as ISRO I-2K (I-2000), by catalogue number; GSAT-6 (6 m reflector) and EOS-05 (an imager) keep the stand-in. A family FORM, not one satellite's payload: the route is `generic`. They wore the SSL-1300 stand-in; forge #117
Licence note. The numbers are facts (GCAT CC BY 4.0, Wikipedia CC BY-SA 4.0); the shape is this project's, under this repository's licence. The photographs and renders named under `references` were LOOKED AT ONLY: no part of any is in a file. NO LOGO AND NO LETTERING is on the mesh.
References 8
What the shape was compared with. None of these pictures is in the file.
- GSAT-31 undergoing CATF test.jpgISROGODL-India (ISRO; Commons LicenseShortName, read 2026-11-07) (Commons LicenseShortName, read 2026-11-07)
- GSAT-31 reflector deployment test.jpgISROGODL-India (ISRO; Commons LicenseShortName, read 2026-11-07) (Commons LicenseShortName, read 2026-11-07)
- GSAT-31 during north solar panel deployment test.jpgISROGODL-India (ISRO; Commons LicenseShortName, read 2026-11-07) (Commons LicenseShortName, read 2026-11-07)
- GSAT-9 (Gunter's Space Page)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)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)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 busWikipedia contributorsCC BY-SA 4.0 (the numbers are facts; nothing else is copied)
- General Catalog of Artificial Space Objects (GCAT), satcat.tsv of 2026-11-07Jonathan C. McDowellCC BY 4.0 (the catalogue's own statement)
Use it
The model is under the MIT licence: use it, change it and share it, in any project, also a paid one. Keep the credit:
I-2K satellite bus 3D model by Space Radar (spaceradar.ai), MIT LicenseAny glTF 2.0 loader that reads meshopt compression (EXT_meshopt_compression) opens the file: three.js with its MeshoptDecoder, Babylon.js, model-viewer. Tools such as glTF-Transform can write an uncompressed copy.
Or embed the viewer in your page:
<iframe src="https://www.spaceradar.ai/model/?id=bus-i-2k" title="I-2K satellite bus, 3D model by Space Radar" width="600" height="450" loading="lazy" style="border:0;max-width:100%"></iframe>Related models
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