| Primary satellite | Secondary satellite |
| Name | STRAND 1 | COSMOS 2251 DEB |
| Spacetrack catalog number | 39090 | 33915 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2023 Jun 08 12:00 | 2023 Jun 08 09:06 |
| Time of closest approach (UTC) | 2023 Apr 05 20:24:21.996 |
| Minimum distance | 271.334 km |
| Height difference | -3.323 km |
| Relative speed | 11.177 km/s |
| Angle between velocity vectors | 97° |
| Geographic position | 74.2°S, 177.5°W |
| Height | 806 km |
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