missions

HJ-2B (Huan Jing-2B)

HJ-2B (Huan Jing-2B) is a Chinese environmental monitoring satellite operated by CRESDA, co-launched with HJ-2A on 2020-09-27 from Taiyuan. It flies in a sun-synchronous orbit at 650 km altitude, 97.9 degree inclination, with a 10:30 descending local solar time crossing and a 31-day repeat cycle.^[1]^[2]

HJ-2B carries three remote-sensing instruments: the Wide-Band Visible Camera 2 (WVC-2) for multispectral land, vegetation, and coastal observation; the Infrared Multispectral Scanner 2 (IRMSS-2) for thermal infrared land-surface temperature retrieval and fire detection; and the Hyperspectral Imager 2 (HSI-2) for detailed spectral classification of land cover, crops, coastal water quality, and marine primary production.^[3]^[4]^[5]

WMO OSCAR records HJ-2B as operational as of February 2026. CEOS listed a projected end-of-life of December 2025, while the WMO record indicates operational status at least into 2026. Data are distributed by CRESDA.^[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 Land cover change

related to Disaster damage assessment

related to Crop stress and yield

related to Coastal water quality

related to Marine primary production

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

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-2Bagency doc2026-06-14
[2]CEOS MIM mission summary: HJ-2Bagency doc2026-06-14
[3]WMO OSCAR instrument record: WVC-2agency doc2026-06-14
[4]WMO OSCAR instrument record: IRMSS-2agency doc2026-06-14
[5]WMO OSCAR instrument record: HSI-2agency doc2026-06-14

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

How to cite this page

Plain text

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

BibTeX

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