| Primary satellite | Secondary satellite |
| Name | Kosmos-449 | DELTA 1 DEB |
| Spacetrack catalog number | 5552 | 40771 |
| Radar cross section | medium | small |
| Epoch of two-line elements (UTC) | 2024 Dec 22 21:13 | 2024 Dec 21 08:50 |
| Time of closest approach (UTC) | 2024 Dec 24 07:54:26.533 |
| Minimum distance | 4.578 km |
| Height difference | 2.434 km |
| Relative speed | 14.200 km/s |
| Angle between velocity vectors | 172° |
| Geographic position | 58.8°N, 97.2°E |
| Height | 1510 km |
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