EO·Atlas
HY-1C
HY-1C (Hai Yang 1C) is the third HY-1 series ocean observation satellite operated by NSOAS, and the first operational unit of the HY-1C/HY-1D generation. It was launched on 2018-09-07 and flies in a sun-synchronous orbit at 785 km altitude with a 10:30 descending equator crossing and a 7-day repeat cycle. WMO OSCAR records it as operational as of 2026-01-19.[1]
HY-1C carries five payloads. The Chinese Ocean Colour and Temperature Scanner (COCTS) provides 10-band multispectral imagery for ocean colour and sea-surface temperature retrieval; WMO and IOCCG report COCTS swath as 2,900 km and 3,000 km respectively.[1][2] The Coastal Zone Imager (CZI) delivers higher-resolution four-band imagery for nearshore and land-coastal boundary observation.[3] The Ultraviolet Imager (UVI) appears in the WMO OSCAR instrument set as an active payload on HY-1C.[1] An Automatic Identification System (AIS) receiver provides vessel tracking capability, and a Spectral Calibration Spectrometer (SCS) supports on-orbit calibration.[1]
NSOAS operates the satellite and distributes data supporting ocean colour, sea-surface temperature, and coastal zone monitoring applications.[1]
All fields
| current status | operational |
| operator | National Satellite Ocean Application Service |
| launch vehicle | casc-long-march-2c |
| Launched | 2018-09-07 |
| orbit type | Sun-synchronous orbit, 785 km altitude, 10:30 descending equator crossing |
| revisit days | 7 |
| tasking supported | false |
| current geographic priority | Global ocean colour, sea-surface temperature and coastal-zone observations |
| Last updated | 2026-06-14 |
| claim status | agency-sourced |
Compositional position
- [1]WMO OSCAR satellite record: HY-1Ccommunity2026-06-14
- [2]CEOS MIM mission summary: HY-1Ccommunity2026-06-14
- [3]IOCCG sensor summary: COCTS and CZI on HY-1 seriescommunity2026-06-14