| Primary satellite | Secondary satellite |
| Name | Kosmos-449 | Kosmos-1020 |
| Spacetrack catalog number | 5552 | 10937 |
| Radar cross section | medium | medium |
| Epoch of two-line elements (UTC) | 2024 Dec 22 21:13 | 2024 Dec 22 18:52 |
| Time of closest approach (UTC) | 2024 Dec 24 07:44:25.891 |
| Minimum distance | 4.148 km |
| Height difference | -3.829 km |
| Relative speed | 3.259 km/s |
| Angle between velocity vectors | 26° |
| Geographic position | 73.7°N, 24.1°E |
| Height | 1501 km |
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