# PRIMA spacecraft bus
*bus . products*

## Specifications
- **manufacturer**: thales-alenia-space
- **product status**: operational
- **deployment context**: orbital
- **bus**: {"form_factor":"3.7 m x 1.36 m spacecraft bus dimensions reported for RADARSAT-2","platform_class":"large"}
- **entity type**: bus
- **last verified date**: 2026-06-26
- **verified by**: agency-doc
- **claim status**: agency-sourced
- **provider**: thales-alenia-space
- **attributes**: {"kind":"bus","manufacturer":"thales-alenia-space","product_status":"operational","deployment_context":"orbital","bus":"{\"form_factor\":\"3.7 m x 1.36 m spacecraft bus dimensions reported for RADARSAT-2\",\"platform_class\":\"large\"}"}
- **relevance**: in-scope

## Editorial
PRIMA spacecraft bus is a Thales Alenia Space bus application associated with RADARSAT-2. RADARSAT-2 bus dimensions are 3.7 m by 1.36 m, with launch mass of 2,200 kg.[^csa-radarsat-comparison] That launch mass places this PRIMA application in the large platform class.[^csa-radarsat-comparison] The PRIMA name is tied to Alenia Aerospace and Thales Alenia platform heritage.[^gunter-prima]

## Compositional position
- radarsat-2 (missions) --[mission_buses]--> PRIMA spacecraft bus

## Sources
- [csa-radarsat-comparison] | RADARSAT satellites: Technical comparison, Canadian Space Agency | https://www.asc-csa.gc.ca/eng/satellites/radarsat/technical-features/radarsat-comparison.asp | tier=agency-doc | accessed=2026-06-26 | author=Canadian Space Agency
- [gunter-prima] | Alenia Aerospace / Thales Alenia PRIMA, Gunter Space Page | https://space.skyrocket.de/doc_sat/alenia_prima.htm | tier=community | accessed=2026-06-26 | author=Gunter D. Krebs
  Used only as platform-name cross-check.

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Source: https://eo-atlas.org/products/bus/prima
Maintainer: SpectraWorks B.V. (CC-BY 4.0)