| Primary satellite | Secondary satellite |
| Name | CAS-6 | Cosmos 1953 Rocket |
| Spacetrack catalog number | 44881 | 19211 |
| Radar cross section | medium | large |
| Epoch of two-line elements (UTC) | 2025 Dec 14 07:35 | 2025 Dec 14 06:08 |
| Time of closest approach (UTC) | 2025 Nov 12 13:55:32.490 |
| Minimum distance | 4.640 km |
| Height difference | 4.160 km |
| Relative speed | 15.057 km/s |
| Angle between velocity vectors | 179° |
| Geographic position | 61.7°S, 66.6°W |
| Height | 643 km |
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