| Primary satellite | Secondary satellite |
| Name | CZ-4B R/B | COSMOS 2251 DEB |
| Spacetrack catalog number | 27432 | 35434 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2025 Jul 11 14:29 | 2025 Jul 10 14:07 |
| Time of closest approach (UTC) | 2024 Jul 20 04:52:07.343 |
| Minimum distance | 1711.898 km |
| Height difference | -41.365 km |
| Relative speed | 14.861 km/s |
| Angle between velocity vectors | 180° |
| Geographic position | 30.5°N, 131.0°W |
| Height | 861 km |
|