| Primary satellite | Secondary satellite |
| Name | TIANMU-1 13 | deb Kosmos-252 |
| Spacetrack catalog number | 58647 | 3551 |
| Radar cross section | medium | small |
| Epoch of two-line elements (UTC) | 2024 Dec 23 11:48 | 2024 Dec 22 22:51 |
| Time of closest approach (UTC) | 2024 Dec 25 11:57:15.932 |
| Minimum distance | 5.041 km |
| Height difference | 4.602 km |
| Relative speed | 15.189 km/s |
| Angle between velocity vectors | 159° |
| Geographic position | 15.6°N, 70.8°W |
| Height | 511 km |
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