| Primary satellite | Secondary satellite |
| Name | Cosmos 1850 Rocket | deb Delta 139 |
| Spacetrack catalog number | 18096 | 12203 |
| Radar cross section | large | medium |
| Epoch of two-line elements (UTC) | 2024 Dec 23 01:57 | 2024 Dec 23 02:24 |
| Time of closest approach (UTC) | 2024 Dec 28 10:14:33.489 |
| Minimum distance | 4.469 km |
| Height difference | -4.178 km |
| Relative speed | 14.692 km/s |
| Angle between velocity vectors | 161° |
| Geographic position | 64.3°S, 76.1°W |
| Height | 801 km |
|