# SBIRS GEO 3D model

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

Free 3D model of SBIRS GEO, a satellite, built from published dimensions by Space Radar. 6,344 triangles, 41 kB glTF, MIT.

- **Class:** Satellites
- **Mission:** Earth observation
- **Triangles:** 6,344
- **File:** sbirs-geo.glb, 41 kB, glTF 2.0 binary (meshopt)
- **Look:** Flat colours
- **Size:** 15 m across
- **Made:** Built from dimensions
- **Added:** 2026-10-27
- **Download:** https://raw.githubusercontent.com/Sara-Managed-Projects/space-radar/main/site/models/sbirs-geo.glb
- **Mirror:** https://git.sara-agent.org/sara-projects/space-radar/raw/branch/main/site/models/sbirs-geo.glb
- **Viewer:** https://www.spaceradar.ai/model/?id=sbirs-geo
- **Licence:** MIT (https://github.com/Sara-Managed-Projects/space-radar/blob/main/LICENSE)
- **Credit:** SBIRS GEO 3D model by Space Radar (spaceradar.ai), MIT License

Canonical: https://models.spaceradar.ai/sbirs-geo/

## 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 public US Air Force art and published numbers (public domain sources).

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 (NASA's 3D Resources has none of this craft and no agency model of it was found on 2026-10-27). ONLY PUBLIC, OFFICIALLY RELEASED PICTURES AND NUMBERS WERE USED: nothing beyond what the US Air Force, Space Force, Navy or the maker has released is drawn, and where a page does not say (the inside of a sensor, a payload's layout, the size of a part) the part is a plain closed shape or is left out, and the row says which.

## Dimensions

- Span: 15 m
- Height: 6.1 m
- Depth: 6.7 m
- Envelope: 15 × 6.7 × 6.1 m

Source: Wikipedia's infobox of USA-230 (SBIRS GEO-1) and USA-282 (SBIRS GEO-4), https://en.wikipedia.org/wiki/USA-282, read 2026-10-27: 'dimensions = 15 m x 6.7 m x 6.1 m'; bus 'A2100M'; launch mass 4 500 kg. That page does not say which axis is which: 15 m is read as the span over the wings, 6.1 m as the height of the core with its sensor head, and 6.7 m as the depth over the folded radiator doors. The US Space Force's fact sheet (losangeles.spaceforce.mil, 'Space Based Infrared System (SBIRS)') says, as quoted by a search engine on 2026-10-27, 'two sensors; a scanner and a step-starer' on a 'militarized, radiation-hardened' A2100. Shapes (a tall box of silver blanket, a round sensor head on the Earth face, two wings of two panels on long yokes, two radiator doors, a small dish on a boom, an open bay with a white tank on one face) are read off the Air Force's released art (Commons: 'SBIRS-GEO 2.jpg', 'SBIRS-GEO.jpg', public domain) and looked at in Lockheed Martin's SBIRS product card (https://www.lockheedmartin.com/content/dam/lockheed-martin/space/photo/sbirs/SBIRS_Fact_Sheet_(Final).pdf, a Lockheed picture, looked at only, nothing of it is used). The sensor's inside is NOT PUBLIC and is not drawn: the head is a closed round housing with a dark aperture and a pointing baffle, as the art draws it.

## References

- [SBIRS-GEO 2](https://commons.wikimedia.org/wiki/File:SBIRS-GEO_2.jpg), USAF (Wikimedia Commons) (Public domain (USAF; the Commons API's LicenseShortName, read 2026-10-27))
- [SBIRS-GEO](https://commons.wikimedia.org/wiki/File:SBIRS-GEO.jpg), US Air Force (Wikimedia Commons) (Public domain (US Air Force; the Commons API's LicenseShortName, read 2026-10-27))