| Primary satellite | Secondary satellite |
| Name | Okean 2 Rocket | HJ-1B |
| Spacetrack catalog number | 20511 | 33321 |
| Radar cross section | large | large |
| Epoch of two-line elements (UTC) | 2021 Jan 15 13:04 | 2021 Jan 15 19:29 |
| Time of closest approach (UTC) | 2020 Dec 05 01:44:11.285 |
| Minimum distance | 3.512 km |
| Height difference | -3.480 km |
| Relative speed | 15.072 km/s |
| Angle between velocity vectors | 174° |
| Geographic position | 81.9°S, 0.2°W |
| Height | 645 km |
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