| Primary satellite | Secondary satellite |
| Name | Cosmos 1975 | FLOCK 4BE 28 |
| Spacetrack catalog number | 19573 | 60519 |
| Radar cross section | large | medium |
| Epoch of two-line elements (UTC) | 2024 Dec 22 15:25 | 2024 Dec 22 19:00 |
| Time of closest approach (UTC) | 2024 Dec 28 21:13:00.243 |
| Minimum distance | 1.782 km |
| Height difference | -1.781 km |
| Relative speed | 12.825 km/s |
| Angle between velocity vectors | 115° |
| Geographic position | 81.2°S, 78.6°E |
| Height | 527 km |
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