| Primary satellite | Secondary satellite |
| Name | STRAND 1 | COSMOS 2251 DEB |
| Spacetrack catalog number | 39090 | 35026 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2024 Dec 22 12:12 | 2024 Dec 20 12:37 |
| Time of closest approach (UTC) | 2024 Dec 26 14:30:33.013 |
| Minimum distance | 0.664 km |
| Height difference | 0.560 km |
| Relative speed | 9.544 km/s |
| Angle between velocity vectors | 80° |
| Geographic position | 70.3°S, 104.4°W |
| Height | 799 km |
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