| Primary satellite | Secondary satellite |
| Name | TIANMU-1 08 | Cosmos 1953 |
| Spacetrack catalog number | 57400 | 19210 |
| Radar cross section | medium | large |
| Epoch of two-line elements (UTC) | 2024 Dec 23 13:31 | 2024 Dec 23 04:19 |
| Time of closest approach (UTC) | 2024 Dec 28 02:13:04.560 |
| Minimum distance | 2.415 km |
| Height difference | -2.413 km |
| Relative speed | 15.211 km/s |
| Angle between velocity vectors | 180° |
| Geographic position | 46.6°S, 67.6°W |
| Height | 518 km |
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