| Primary satellite | Secondary satellite |
| Name | Cosmos 1766 | PSLV DEB |
| Spacetrack catalog number | 16881 | 27353 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2021 Jan 26 10:57 | 2021 Jan 25 12:46 |
| Time of closest approach (UTC) | 2020 Nov 30 01:32:34.594 |
| Minimum distance | 210.163 km |
| Height difference | -2.953 km |
| Relative speed | 13.099 km/s |
| Angle between velocity vectors | 119° |
| Geographic position | 80.2°N, 174.9°W |
| Height | 535 km |
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