| Primary satellite | Secondary satellite |
| Name | Lacrosse 4 Rocket | COSMOS 2251 DEB |
| Spacetrack catalog number | 26474 | 34293 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2021 Jan 17 20:49 | 2021 Jan 17 18:10 |
| Time of closest approach (UTC) | 2020 Nov 28 03:55:20.523 |
| Minimum distance | 430.730 km |
| Height difference | -10.013 km |
| Relative speed | 14.036 km/s |
| Angle between velocity vectors | 138° |
| Geographic position | 30.4°S, 52.3°E |
| Height | 629 km |
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