| Primary satellite | Secondary satellite |
| Name | FW4S | deb Kosmos-886 |
| Spacetrack catalog number | 6180 | 9964 |
| Radar cross section | medium | small |
| Epoch of two-line elements (UTC) | 2025 Nov 13 05:30 | 2025 Nov 13 03:11 |
| Time of closest approach (UTC) | 2025 Oct 09 13:51:40.057 |
| Minimum distance | 20.406 km |
| Height difference | 3.549 km |
| Relative speed | 14.949 km/s |
| Angle between velocity vectors | 156° |
| Geographic position | 5.6°N, 172.2°E |
| Height | 670 km |
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