# Huan Jing-2A
*missions*

## Specifications
- **operator**: cresda
- **actual launch**: 2020-09-27
- **current status**: operational
- **orbit type**: Sun-synchronous orbit, 650 km altitude, 10:30 descending equator crossing
- **revisit days**: 31
- **tasking supported**: false
- **current geographic priority**: Land observation, environmental monitoring, and disaster monitoring.
- **launch vehicle**: casc-long-march-4b
- **entity type**: mission
- **last verified date**: 2026-06-14
- **verified by**: agency-doc
- **claim status**: agency-sourced
- **provider**: cresda
- **attributes**: {"operator":"cresda","actual_launch":"2020-09-27","current_status":"operational","orbit_type":"Sun-synchronous orbit, 650 km altitude, 10:30 descending equator crossing","revisit_days":31,"tasking_supported":false,"current_geographic_priority":"Land observation, environmental monitoring, and disaster monitoring.","launch_vehicle":"casc-long-march-4b"}
- **relevance**: in-scope

## Editorial
Huan Jing-2A (HJ-2A) is a Chinese environmental and disaster monitoring satellite operated by CRESDA, co-launched with HJ-2B on 2020-09-27 from Taiyuan. It flies in a sun-synchronous orbit at 650 km altitude with a 10:30 descending local solar time crossing and a 31-day repeat cycle.[^wmo-hj2a][^ceos-hj2a]

HJ-2A carries three instruments: the Wide-Band Visible Camera 2 (WVC-2) for multispectral land and vegetation observation; the Infrared Multispectral Scanner 2 (IRMSS-2 HJ) for thermal infrared land-surface temperature and anomaly detection; and the Hyperspectral Imager 2 (HSI-2) for narrowband spectral classification of land cover, vegetation stress, and mineralogy.[^wmo-wvc2][^wmo-irmss2-hj][^wmo-hsi2]

WMO OSCAR records HJ-2A as operational as of 2026-02-02. CEOS lists an end-of-life date of December 2025, while the WMO record indicates operational status extending into at least 2026. Data are distributed by CRESDA for land monitoring, disaster response, and environmental surveys.[^wmo-hj2a][^ceos-hj2a]

## Compositional position
- Huan Jing-2A --[mission_payloads]--> wvc-2 (products)
- Huan Jing-2A --[mission_payloads]--> irmss-2-hj (products)
- Huan Jing-2A --[mission_payloads]--> hsi-2 (products)
- Huan Jing-2A --[related-topic]--> disaster-damage-assessment (topics)
- Huan Jing-2A --[related-topic]--> land-cover-change (topics)
- Huan Jing-2A --[related-topic]--> wildfire (topics)

## Sources
- [wmo-hj2a] | WMO OSCAR satellite record: HJ-2A | https://space.oscar.wmo.int/satellites/view/hj_2a | tier=agency-doc | accessed=2026-06-14
- [ceos-hj2a] | CEOS MIM mission summary: HJ-2A | https://database.eohandbook.com/database/missionsummary.aspx?missionID=947 | tier=agency-doc | accessed=2026-06-14
- [cast-optical-remote-sensing] | CAST optical remote sensing satellites: HJ family | https://www.cast.cn/english/channel/2021 | tier=operator-engineering | accessed=2026-06-14
- [wmo-wvc2] | WMO OSCAR instrument record: WVC-2 | https://space.oscar.wmo.int/instruments/view/wvc_2 | tier=agency-doc | accessed=2026-06-14
- [wmo-irmss2-hj] | WMO OSCAR instrument record: IRMSS-2 (HJ) | https://space.oscar.wmo.int/instruments/view/irmss_2_hj | tier=agency-doc | accessed=2026-06-14
- [wmo-hsi2] | WMO OSCAR instrument record: HSI-2 | https://space.oscar.wmo.int/instruments/view/hsi_2 | tier=agency-doc | accessed=2026-06-14

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