| Primary satellite | Secondary satellite |
| Name | deb Kosmos-1275 | COSMOS 2251 DEB |
| Spacetrack catalog number | 15766 | 34446 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2025 Jun 15 04:40 | 2025 Jun 16 01:37 |
| Time of closest approach (UTC) | 2025 May 17 16:33:29.433 |
| Minimum distance | 74.450 km |
| Height difference | -4.583 km |
| Relative speed | 14.639 km/s |
| Angle between velocity vectors | 156° |
| Geographic position | 13.1°N, 140.8°E |
| Height | 749 km |
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