# Sich-1
*missions*

## Specifications
- **operator**: ssau
- **platform**: okean-o1-bus
- **launch vehicle**: cyclone-3
- **actual launch**: 1995-08-31
- **actual end of life**: 2001-12-14
- **current status**: ended
- **orbit type**: drifting LEO, about 650 km altitude, 82.5 degree inclination
- **tasking supported**: false
- **current geographic priority**: Operational oceanography, Ukrainian environmental monitoring, floods, vegetation, soil pollution, snow cover and ionosphere science
- **entity type**: mission
- **last verified date**: 2026-06-21
- **verified by**: agency-doc
- **claim status**: agency-sourced
- **provider**: ssau
- **attributes**: {"operator":"ssau","platform":"okean-o1-bus","launch_vehicle":"cyclone-3","actual_launch":"1995-08-31","actual_end_of_life":"2001-12-14","current_status":"ended","orbit_type":"drifting LEO, about 650 km altitude, 82.5 degree inclination","tasking_supported":false,"current_geographic_priority":"Operational oceanography, Ukrainian environmental monitoring, floods, vegetation, soil pollution, snow cover and ionosphere science"}
- **relevance**: in-scope

## Editorial
Sich-1 was a Ukrainian Earth-observation, operational-oceanography, and space-science mission.[^ssau-sich-1][^wmo-sich-1] It launched on 1995-08-31 on Cyclone-3 from Plesetsk and operated in drifting low Earth orbit at about 650 km altitude and 82.5 degrees inclination.[^ssau-sich-1][^wmo-sich-1] The spacecraft carried Kondor, MSU-SK, MWR Okean, RLSBO, and RM-08 payloads for data collection, multispectral visible and infrared imaging, microwave radiometry, side-looking radar, and passive microwave scanning.[^wmo-sich-1][^gunter-okean-o1] Mission applications covered operational oceanography, environmental monitoring, floods, vegetation, soil pollution, snow cover, and ionosphere or magnetosphere science.[^ssau-sich-1] The mission ended on 2001-12-14.[^wmo-sich-1]

## Compositional position
- Sich-1 --[mission_payloads]--> sich-1-kondor (products)
- Sich-1 --[mission_payloads]--> msu-sk (products)
- Sich-1 --[mission_payloads]--> mwr-okean (products)
- Sich-1 --[mission_payloads]--> rlsbo (products)
- Sich-1 --[mission_payloads]--> rm-08 (products)
- Sich-1 --[mission_buses]--> okean-o1-bus (products)
- Sich-1 --[related-topic]--> ocean-surface-winds (topics)
- Sich-1 --[related-topic]--> sea-ice (topics)
- Sich-1 --[related-topic]--> flooding (topics)
- Sich-1 --[related-topic]--> land-cover-change (topics)

## Sources
- [ssau-sich-1] | State Space Agency of Ukraine: Sich-1 | https://www.nkau.gov.ua/en/space-complexes/spacecraft/sich-1 | tier=agency-doc | accessed=2026-06-21
- [wmo-sich-1] | WMO OSCAR satellite record: SICH-1 | https://space.oscar.wmo.int/satellites/view/sich_1 | tier=agency-doc | accessed=2026-06-21
- [gunter-okean-o1] | Gunter Space Page: Okean-O1 / Sich 1 | https://space.skyrocket.de/doc_sdat/okean-o1.htm | tier=community | accessed=2026-06-21

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Source: https://eo-atlas.org/missions/sich-1
Maintainer: SpectraWorks B.V. (CC-BY 4.0)