| Primary satellite | Secondary satellite |
| Name | Helios 1B rocket | COSMOS 2251 DEB |
| Spacetrack catalog number | 25979 | 34397 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2023 Feb 06 04:18 | 2023 Feb 05 21:34 |
| Time of closest approach (UTC) | 2022 Dec 02 02:50:02.104 |
| Minimum distance | 22.995 km |
| Height difference | -2.958 km |
| Relative speed | 15.089 km/s |
| Angle between velocity vectors | 169° |
| Geographic position | 42.0°N, 175.0°W |
| Height | 583 km |
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