| Primary satellite | Secondary satellite |
| Name | Cosmos 2366 rocket | deb Delta 139 |
| Spacetrack catalog number | 25893 | 12177 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2025 Dec 08 20:23 | 2025 Dec 08 20:14 |
| Time of closest approach (UTC) | 2025 May 20 11:52:40.437 |
| Minimum distance | 992.803 km |
| Height difference | 16.343 km |
| Relative speed | 13.687 km/s |
| Angle between velocity vectors | 137° |
| Geographic position | 81.4°S, 152.1°W |
| Height | 982 km |
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