| Primary satellite | Secondary satellite |
| Name | Nadezhda 4 Rocket | Cosmos 381 |
| Spacetrack catalog number | 23180 | 4783 |
| Radar cross section | large | large |
| Epoch of two-line elements (UTC) | 2023 Mar 25 22:27 | 2023 Mar 25 17:20 |
| Time of closest approach (UTC) | 2023 Feb 02 21:07:15.160 |
| Minimum distance | 30.888 km |
| Height difference | 1.132 km |
| Relative speed | 6.438 km/s |
| Angle between velocity vectors | 52° |
| Geographic position | 73.9°N, 94.2°W |
| Height | 993 km |
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