| Primary satellite | Secondary satellite |
| Name | Oscar 11 | COSMOS 2251 DEB |
| Spacetrack catalog number | 14781 | 38487 |
| Radar cross section | medium | small |
| Epoch of two-line elements (UTC) | 2022 Jun 29 12:33 | 2022 Jun 27 20:09 |
| Time of closest approach (UTC) | 2022 May 26 23:35:42.465 |
| Minimum distance | 5.059 km |
| Height difference | 4.384 km |
| Relative speed | 6.848 km/s |
| Angle between velocity vectors | 54° |
| Geographic position | 62.9°S, 61.9°E |
| Height | 646 km |
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