| Primary satellite | Secondary satellite |
| Name | FW4S | CSL-04 DEB |
| Spacetrack catalog number | 6180 | 26220 |
| Radar cross section | medium | large |
| Epoch of two-line elements (UTC) | 2025 Nov 13 05:30 | 2025 Nov 13 07:15 |
| Time of closest approach (UTC) | 2025 Oct 10 04:02:52.299 |
| Minimum distance | 179.954 km |
| Height difference | -12.457 km |
| Relative speed | 14.786 km/s |
| Angle between velocity vectors | 159° |
| Geographic position | 69.7°N, 138.6°E |
| Height | 672 km |
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