| Primary satellite | Secondary satellite |
| Name | Cosmos 1766 | JILIN-01 GAOFEN 2B |
| Spacetrack catalog number | 16881 | 44836 |
| Radar cross section | large | large |
| Epoch of two-line elements (UTC) | 2021 Jan 26 10:57 | 2021 Jan 26 06:38 |
| Time of closest approach (UTC) | 2020 Nov 28 04:17:02.509 |
| Minimum distance | 54.884 km |
| Height difference | -0.729 km |
| Relative speed | 15.025 km/s |
| Angle between velocity vectors | 166° |
| Geographic position | 82.5°S, 15.4°E |
| Height | 572 km |
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