# AstroSat-500 bus
*bus . products*

EADS Astrium small-satellite platform used for the THEOS-1/Thaichote Earth-observation mission.

## Specifications
- **product status**: retired
- **deployment context**: orbital
- **manufacturer**: airbus-ds
- **bus**: {"form_factor":"small satellite bus","platform_class":"medium"}
- **entity type**: bus
- **last verified date**: 2026-06-26
- **verified by**: community
- **claim status**: unclaimed
- **provider**: airbus-ds
- **attributes**: {"kind":"bus","product_status":"retired","deployment_context":"orbital","manufacturer":"airbus-ds","description":"EADS Astrium small-satellite platform used for the THEOS-1/Thaichote Earth-observation mission.","bus":"{\"form_factor\":\"small satellite bus\",\"platform_class\":\"medium\"}"}
- **relevance**: in-scope

## Editorial
AstroSat-500 is an EADS Astrium small-satellite bus used for Thailand's THEOS / Thaichote Earth-observation mission.[^eoportal-theos][^wiki-theos-de] The platform is medium class, tied to a spacecraft mass of roughly 715-750 kg.[^eoportal-theos][^wiki-theos-de] THEOS spacecraft dimensions are about 2.1 m x 2.1 m x 2.4 m, with about 840-980 W power.[^eoportal-theos][^wiki-theos-de] The provider is Airbus Defence and Space.[^eoportal-theos]

## Compositional position
- theos-1 (missions) --[mission_buses]--> AstroSat-500 bus

## Sources
- [eoportal-theos] | THEOS (Thailand Earth Observation System), eoPortal | https://www.eoportal.org/satellite-missions/theos#space-and-hardware-components | tier=community | accessed=2026-06-26
- [wiki-theos-de] | THEOS, German Wikipedia technical summary | https://de.wikipedia.org/wiki/THEOS | tier=community | accessed=2026-06-26

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Source: https://eo-atlas.org/products/bus/astrosat-500
Maintainer: SpectraWorks B.V. (CC-BY 4.0)