| Primary satellite | Secondary satellite |
| Name | deb Delta 139 | Cosmos 2278 Rocket |
| Spacetrack catalog number | 13561 | 23088 |
| Radar cross section | small | large |
| Epoch of two-line elements (UTC) | 2024 Dec 22 12:50 | 2024 Dec 23 03:52 |
| Time of closest approach (UTC) | 2024 Dec 29 08:51:31.629 |
| Minimum distance | 3.900 km |
| Height difference | -2.566 km |
| Relative speed | 7.822 km/s |
| Angle between velocity vectors | 64° |
| Geographic position | 62.2°S, 6.7°W |
| Height | 865 km |
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