A2100AX satellite bus
Shape built from published dimensions and the maker’s renders; details estimated.
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
A2100AX 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 the maker’s renders; details estimated. It has 16,354 triangles in a 117 kB glTF file, and is 27 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 | 2.2 m |
| Body y | 2.5 m |
| Body z | 4.9 m |
| Span | 26.9 m |
| Width | 8.9 m |
| Reflector | 3 m |
GCAT, the A2100AX and AXS satellites: Length 4.5 to 7.7 m (median 6.0), Diameter 1.8 to 3.6 (median 2.5), Span 21 to 27 m (median 26.9); JCSAT-3A 27 x 9 m deployed (Wikipedia, read 2026-11-07). Drawn: a body 2.2 x 2.5 x 4.9 m (6.0 m with the deck tower), 26.9 m over the wings, 8.9 m over the reflectors. OURS (ESTIMATED): the reflectors' 3.0 m (from the 9 m width) and the deck reflector's 1.5 m with their arms and tilts, four panels of 2.6 x 2.55 m a wing, the 2.2 m yoke and the stand-off struts, the horns and feeds, the radiator tile pattern. (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, the makers' figures); layout read from the makers' 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 maker's renders and the photographs under `references` LOOKED AT ONLY; no image-to-3D model was used and no published mesh (NASA 3D Resources has none of this bus; scripts/check-model-sources.py, 2026-11-07)
Where the map uses it. the 11 geostationary satellites registry/geo-buses.yaml names as Lockheed Martin A2100AX or AXS, by catalogue number; the A2100A and LM 2100 rows stay held. A family FORM, not one satellite's payload: the route is `generic` and the card says the shape is built from the maker's renders. 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 makers' published figures); the shape is this project's, under this repository's licence. The renders and photographs 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 7
What the shape was compared with. None of these pictures is in the file.
- AMC-15 (Gunter's Space Page)Lockheed Martin, via Gunter's Space Page (Gunter D. Krebs)copyright Lockheed Martin (a maker's render; looked at only, no part of it is in a file)
- Astra 1KR (Gunter's Space Page)Lockheed Martin, via Gunter's Space Page (Gunter D. Krebs)copyright Lockheed Martin (a maker's render; looked at only, no part of it is in a file)
- Astra 1L (Gunter's Space Page)Lockheed Martin, via Gunter's Space Page (Gunter D. Krebs)copyright Lockheed Martin (a maker's render; looked at only, no part of it is in a file)
- GE-1A (Gunter's Space Page)Lockheed Martin, via Gunter's Space Page (Gunter D. Krebs)copyright Lockheed Martin (a maker's render; looked at only, no part of it is in a file)
- Wikipedia: JCSAT-3AWikipedia contributorsCC BY-SA 4.0 (the infobox's numbers are facts; nothing else is copied)
- Wikipedia: A2100Wikipedia contributorsCC BY-SA 4.0 (the infobox's 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:
A2100AX 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-a2100ax" title="A2100AX 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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