| Primary satellite | Secondary satellite |
| Name | deb Delta 139 | COSMOS 2499 DEB |
| Spacetrack catalog number | 12203 | 60615 |
| Radar cross section | medium | small |
| Epoch of two-line elements (UTC) | 2024 Dec 23 02:24 | 2024 Dec 21 05:39 |
| Time of closest approach (UTC) | 2024 Dec 25 13:53:23.137 |
| Minimum distance | 2.988 km |
| Height difference | -1.067 km |
| Relative speed | 14.923 km/s |
| Angle between velocity vectors | 170° |
| Geographic position | 80.5°S, 177.8°W |
| Height | 791 km |
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