missions

Huan Jing-2A

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.^[1]^[2]

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.^[3]^[4]^[5]

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.^[1]^[2]

Supply chain position

carries instrument Wide View CCD camera - 2

carries instrument Infrared Multispectral Scanner - 2

carries instrument Hyper-Spectral Imager - 2

operated by China Center for Resources Satellite Data and Application

launched on Casc Long March 4b

related to Disaster damage assessment

related to Land cover change

related to Wildfire

Vegetation index mapping → demonstrated Wide View CCD camera - 2

Optical time-series change detection → demonstrated Wide View CCD camera - 2

Multispectral optical imaging → demonstrated Wide View CCD camera - 2

Land-surface temperature - emissivity retrieval → demonstrated Infrared Multispectral Scanner - 2

Thermal anomaly detection → demonstrated Infrared Multispectral Scanner - 2

Sea-surface temperature retrieval → demonstrated Infrared Multispectral Scanner - 2

Multispectral optical imaging → demonstrated Infrared Multispectral Scanner - 2

Thermal infrared imaging → demonstrated Infrared Multispectral Scanner - 2

Imaging spectroscopy retrieval → demonstrated Hyper-Spectral Imager - 2

Vegetation index mapping → demonstrated Hyper-Spectral Imager - 2

Sources

[1]WMO OSCAR satellite record: HJ-2Aagency doc2026-06-14
[2]CEOS MIM mission summary: HJ-2Aagency doc2026-06-14
[3]WMO OSCAR instrument record: WVC-2agency doc2026-06-14
[4]WMO OSCAR instrument record: IRMSS-2 (HJ)agency doc2026-06-14
[5]WMO OSCAR instrument record: HSI-2agency doc2026-06-14
[6]CAST optical remote sensing satellites: HJ familyoperator engineering2026-06-14

Cite https://eo-atlas.org/missions/hj-2a Markdown twin → Field definitions → Suggest a correction →

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Plain text

Huan Jing-2A. EO-Atlas, SpectraWorks B.V. https://eo-atlas.org/missions/hj-2a (CC BY 4.0)

BibTeX

@misc{eoatlas:missions:hj-2a,
  title = {Huan Jing-2A},
  author = {{EO-Atlas}},
  publisher = {SpectraWorks B.V.},
  note = {CC BY 4.0},
  url = {https://eo-atlas.org/missions/hj-2a}
}