# SCD-2
*missions*

## Specifications
- **operator**: inpe
- **actual launch**: 1998-10-23
- **platform**: scd-bus
- **launch vehicle**: orbital-pegasus
- **current status**: operational
- **orbit type**: 742 km x 768 km LEO, 25 degree inclination
- **tasking supported**: false
- **current geographic priority**: Brazilian environmental data collection from remote data-collection platforms
- **entity type**: mission
- **last verified date**: 2026-06-21
- **verified by**: community
- **claim status**: agency-sourced
- **provider**: inpe
- **attributes**: {"operator":"inpe","actual_launch":"1998-10-23","platform":"scd-bus","launch_vehicle":"orbital-pegasus","current_status":"operational","orbit_type":"742 km x 768 km LEO, 25 degree inclination","tasking_supported":false,"current_geographic_priority":"Brazilian environmental data collection from remote data-collection platforms"}
- **relevance**: in-scope

## Editorial
SCD-2 is the Brazilian follow-on satellite in the SCD environmental data-collection relay series.[^inpe-scd-mission][^gunter-scd-2] It launched on 1998-10-23 on Pegasus-H and operates in low Earth orbit at about 742 km by 768 km with 25 degrees inclination.[^gunter-scd-2] The mission carries a UHF/S-band data-collection transponder and improves the SCD relay function through antenna and attitude-control changes.[^inpe-scd-mission][^gunter-scd-2] SCD-2 continues the SCD role of collecting environmental measurements from remote platforms across Brazil.[^inpe-scd-mission]

## Compositional position
- SCD-2 --[mission_payloads]--> scd-data-collection-transponder (products)
- SCD-2 --[mission_buses]--> scd-bus (products)
- SCD-2 --[related-topic]--> inland-water (topics)
- SCD-2 --[related-topic]--> weather-nowcasting (topics)

## Sources
- [inpe-scd-mission] | INPE SCD data-collection mission description | https://www.inpe.br/scd1/site_scd/scd1/missao.htm | tier=agency-doc | accessed=2026-06-21
- [gunter-scd-2] | Gunter Space Page: SCD 2, 2A | https://space.skyrocket.de/doc_sdat/scd-2.htm | tier=community | accessed=2026-06-21

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