| Primary satellite | Secondary satellite |
| Name | DELTA 1 DEB | COSMOS 2251 DEB |
| Spacetrack catalog number | 37651 | 34468 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2025 Nov 14 12:59 | 2025 Nov 17 16:36 |
| Time of closest approach (UTC) | 2025 Oct 19 19:54:32.402 |
| Minimum distance | 44.930 km |
| Height difference | -0.481 km |
| Relative speed | 14.900 km/s |
| Angle between velocity vectors | 171° |
| Geographic position | 41.4°N, 56.9°E |
| Height | 768 km |
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