# SCD octagonal data-collection satellite bus
*bus . products*

Spin-stabilised octagonal-prism spacecraft platform used by Brazil's SCD data-collection satellites.

## Specifications
- **product status**: retired
- **deployment context**: orbital
- **manufacturer**: inpe
- **bus**: {"power_w":110,"notes":"INPE gives octagonal-prism form, spin attitude stabilisation, passive thermal control, 115 kg total mass for SCD-1, and 110 W electric power.","platform_class":"mini"}
- **entity type**: bus
- **last verified date**: 2026-06-26
- **verified by**: agency-doc
- **claim status**: agency-sourced
- **provider**: inpe
- **mass kg**: 115
- **power gen w**: 110
- **form factor**: octagonal-prism spin-stabilised small satellite
- **attributes**: {"kind":"bus","product_status":"retired","deployment_context":"orbital","manufacturer":"inpe","description":"Spin-stabilised octagonal-prism spacecraft platform used by Brazil's SCD data-collection satellites.","bus":"{\"power_w\":110,\"notes\":\"INPE gives octagonal-prism form, spin attitude stabilisation, passive thermal control, 115 kg total mass for SCD-1, and 110 W electric power.\",\"platform_class\":\"mini\"}"}
- **relevance**: in-scope

## Editorial
SCD octagonal data-collection satellite bus is an INPE spacecraft platform for Brazil's SCD data-collection satellites. The SCD-1 implementation uses an octagonal-base prism about 1 m in diameter and 1.45 m high, with total mass of 115 kg.[^inpe-scd-satellite] It generates 110 W of electric power from eight rectangular side panels and one top octagonal panel, uses rotation for attitude stabilization, and relies on passive thermal control.[^inpe-scd-satellite]

## Compositional position
- scd-1 (missions) --[mission_buses]--> SCD octagonal data-collection satellite bus
- scd-2 (missions) --[mission_buses]--> SCD octagonal data-collection satellite bus

## Sources
- [inpe-scd-satellite] | INPE SCD-1 satellite technical characteristics | https://www.inpe.br/scd1/site_scd/scd1/osatelite.htm | tier=agency-doc | accessed=2026-06-26

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