| Primary satellite | Secondary satellite |
| Name | SJ-11-01 | COSMOS 2251 DEB |
| Spacetrack catalog number | 36088 | 47075 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2021 Jan 25 18:44 | 2020 Dec 24 19:56 |
| Time of closest approach (UTC) | 2020 Dec 03 00:53:56.136 |
| Minimum distance | 36.024 km |
| Height difference | 6.653 km |
| Relative speed | 14.140 km/s |
| Angle between velocity vectors | 141° |
| Geographic position | 72.2°S, 73.3°E |
| Height | 710 km |
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