EO·Atlas
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]
All fields
| current status | operational |
| operator | China Center for Resources Satellite Data and Application |
| launch vehicle | casc-long-march-4b |
| Launched | 2020-09-27 |
| orbit type | Sun-synchronous orbit, 650 km altitude, 10:30 descending equator crossing |
| revisit days | 31 |
| tasking supported | false |
| current geographic priority | Disaster, environment, land, vegetation, and coastal or inland-water monitoring. |
| Last updated | 2026-06-14 |
| claim status | agency-sourced |
Compositional position
- [1]CEOS MIM mission summary: HJ-2Bagency doc2026-06-14
- [2]WMO OSCAR satellite record: HJ-2Bagency doc2026-06-14
- [3]WMO OSCAR instrument record: WVC-2agency doc2026-06-14
- [4]WMO OSCAR instrument record: HSI-2agency doc2026-06-14
- [5]WMO OSCAR instrument record: IRMSS-2agency doc2026-06-14