| Primary satellite | Secondary satellite |
| Name | STARLINK-30221 | COSMOS 2251 DEB |
| Spacetrack catalog number | 57418 | 34464 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2024 Dec 23 20:04 | 2024 Dec 23 15:21 |
| Time of closest approach (UTC) | 2024 Dec 23 21:19:43.384 |
| Minimum distance | 5.370 km |
| Height difference | 4.210 km |
| Relative speed | 5.537 km/s |
| Angle between velocity vectors | 43° |
| Geographic position | 34.5°S, 23.8°E |
| Height | 568 km |
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