| Primary satellite | Secondary satellite |
| Name | deb Kosmos-1275 | Star 20 E-55 |
| Spacetrack catalog number | 15766 | 22699 |
| Radar cross section | small | medium |
| Epoch of two-line elements (UTC) | 2025 Jun 15 04:40 | 2025 Jun 16 11:07 |
| Time of closest approach (UTC) | 2025 May 17 00:34:05.932 |
| Minimum distance | 31.799 km |
| Height difference | 0.444 km |
| Relative speed | 14.941 km/s |
| Angle between velocity vectors | 172° |
| Geographic position | 24.3°N, 163.0°W |
| Height | 757 km |
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