| Primary satellite | Secondary satellite |
| Name | SL-14 R/B | COSMOS 2251 DEB |
| Spacetrack catalog number | 33505 | 36548 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2021 Jan 22 16:34 | 2021 Jan 22 19:25 |
| Time of closest approach (UTC) | 2020 Nov 30 15:49:35.879 |
| Minimum distance | 1835.445 km |
| Height difference | -1.081 km |
| Relative speed | 13.902 km/s |
| Angle between velocity vectors | 133° |
| Geographic position | 77.4°S, 24.3°W |
| Height | 564 km |
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