| Primary satellite | Secondary satellite |
| Name | deb Kosmos-1275 | COSMOS 2251 DEB |
| Spacetrack catalog number | 15766 | 33942 |
| Radar cross section | small | medium |
| Epoch of two-line elements (UTC) | 2025 Jun 15 04:40 | 2025 Jun 16 11:42 |
| Time of closest approach (UTC) | 2025 May 13 11:25:27.135 |
| Minimum distance | 468.656 km |
| Height difference | 0.499 km |
| Relative speed | 5.253 km/s |
| Angle between velocity vectors | 41° |
| Geographic position | 74.2°N, 17.9°E |
| Height | 764 km |
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