# THEOS-2
*missions*

## Specifications
- **operator**: gistda
- **actual launch**: 2023-10-09
- **platform**: astrobus-s
- **launch vehicle**: arianespace-vega
- **orbit type**: Sun-synchronous low Earth orbit
- **entity type**: mission
- **last verified date**: 2026-06-21
- **verified by**: agency-doc
- **claim status**: agency-sourced
- **provider**: gistda
- **attributes**: {"operator":"gistda","actual_launch":"2023-10-09","platform":"astrobus-s","launch_vehicle":"arianespace-vega","orbit_type":"Sun-synchronous low Earth orbit"}
- **relevance**: in-scope

## Editorial
THEOS-2 is Thailand's second-generation high-resolution Earth-observation satellite.[^gistda-theos-2][^airbus-theos-2-contract] It launched on 2023-10-09 on Vega flight VV23 from the Guiana Space Centre into Sun-synchronous low Earth orbit.[^gistda-theos-2][^arianespace-vv23] The mission uses an AstroBus-S platform and carries a high-resolution optical imager with imagery up to 0.5 m resolution.[^gistda-theos-2][^airbus-theos-2-contract] THEOS-2 continues Thailand's civil Earth-observation programme for mapping, resource management, and disaster applications.[^gistda-theos-2]

## Compositional position
- THEOS-2 --[mission_payloads]--> theos-2-optical-imager (products)
- THEOS-2 --[mission_buses]--> astrobus-s (products)
- THEOS-2 --[related]--> arianespace-vega (launch_services)
- THEOS-2 --[related-topic]--> land-cover-change (topics)
- THEOS-2 --[related-topic]--> crop-type (topics)
- THEOS-2 --[related-topic]--> disaster-damage-assessment (topics)
- THEOS-2 --[related-topic]--> flooding (topics)
- THEOS-2 --[related-topic]--> urban-change (topics)
- THEOS-2 --[related-topic]--> transport-infrastructure (topics)

## Sources
- [gistda-theos-2] | GISTDA THEOS-2 project page | https://www.gistda.or.th/more_news.php?c_id=154 | tier=agency-doc | accessed=2026-06-21
- [airbus-theos-2-contract] | Airbus wins contract to build THEOS-2 | https://www.airbus.com/en/newsroom/press-releases/2018-06-airbus-wins-contract-to-build-theos-2-earth-observation-satellite-for-thailand | tier=operator-press | accessed=2026-06-21
- [arianespace-vv23] | Arianespace Flight VV23 success announcement | https://newsroom.arianespace.com/flight-vv23-success-to-the-benefit-of-thailand-taiwan-and-cubesats | tier=operator-press | accessed=2026-06-21

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Source: https://eo-atlas.org/missions/theos-2
Maintainer: SpectraWorks B.V. (CC-BY 4.0)