| Primary satellite | Secondary satellite |
| Name | PLEIADES 1B | COSMOS 2251 DEB |
| Spacetrack catalog number | 39019 | 39585 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2024 Dec 23 11:58 | 2024 Dec 19 11:26 |
| Time of closest approach (UTC) | 2024 Dec 25 17:25:33.957 |
| Minimum distance | 4.130 km |
| Height difference | 3.667 km |
| Relative speed | 14.976 km/s |
| Angle between velocity vectors | 172° |
| Geographic position | 11.6°N, 102.0°W |
| Height | 700 km |
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