| Primary satellite | Secondary satellite |
| Name | Cosmos 1726 Rocket | COSMOS 2251 DEB |
| Spacetrack catalog number | 16496 | 36553 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2023 Oct 02 09:16 | 2023 Sep 27 09:20 |
| Time of closest approach (UTC) | 2023 Jun 11 15:17:26.392 |
| Minimum distance | 199.075 km |
| Height difference | 37.841 km |
| Relative speed | 13.406 km/s |
| Angle between velocity vectors | 125° |
| Geographic position | 61.8°N, 6.1°E |
| Height | 611 km |
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