WESTPAC
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
WESTPAC 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 5,328 triangles in a 40 kB glTF file, and is 0.2 m across at full scale.
On Space Radar’s live map it is drawn for the object with NORAD catalogue number 25398, where its published orbit puts it now. Open it on the map.
Dimensions and their sources
| Measure | Value |
|---|---|
| Diameter | 0.245 m |
| Retroreflectors | 60 |
International Laser Ranging Service (NASA-hosted), ilrs.gsfc.nasa.gov/missions/satellite_missions/current_missions/…, opened 2026-10-13: 'diameter of 245 mm, with 60 corner cubes and a mass of 23.757 kg. Each retro-reflector has a baffle tube 31.5 mm high' (THE PAGE DISAGREES WITH ITSELF: its table says 'RRA Diameter: 24 cm'; 245 mm is built); and the description it links, ilrs.gsfc.nasa.gov/docs/Westpac_final.pdf, opened 2026-10-13: 'monolith spherical body made from brass'; 'RR are distributed regularly, 3 pieces on spherical surface of ball's segments limited by the sides of imaginary perfect shape with 20 sides (icosahedron).'; 'round diaphragms with entrance apertures of 20.5 mm installed in a distance of 31.5 mm from the frontal side of each RR'; 'In icosahedron's corners there are 10 deaf holes', and threads 'in two opposite corners'. NOT CITED: where the three sit on a face (drawn 17 degrees from its middle toward its corners), a tube's outer width (drawn 34 mm), the colour (drawn pale, as the page's photograph, which is 'Courtesy of EOS' and not free, shows it) (read 2026-10-13)
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 published description of WESTPAC's 60 baffled retroreflectors.
The full record
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
Where the map uses it. NORAD 25398 (WESTPAC). It was the one plain ball (scene/models.js `sphere`), which is still what is drawn while this file is on its way; batch three of the model backlog
Licence note. No picture ships and none was traced: the only photograph found is not free and was looked at on the page named under `references`; the shape is this project's, under this repository's licence
References 1
What the shape was compared with. None of these pictures is in the file.
- WESTPAC, the ILRS mission pageInternational Laser Ranging Service; photograph 'Courtesy of EOS'The page's text is NASA-hosted (the International Laser Ranging Service at Goddard); its photograph is NOT FREE: 'Courtesy of EOS'
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:
WESTPAC 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=westpac" title="WESTPAC, 3D model by Space Radar" width="600" height="450" loading="lazy" style="border:0;max-width:100%"></iframe>Related models
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Shape built from published dimensions and pictures; details simplified.