| Primary satellite | Secondary satellite |
| Name | Kosmos-1321 | deb Delta 111 |
| Spacetrack catalog number | 12976 | 21934 |
| Radar cross section | medium | small |
| Epoch of two-line elements (UTC) | 2024 Dec 23 10:17 | 2024 Dec 23 07:30 |
| Time of closest approach (UTC) | 2024 Dec 28 16:19:40.629 |
| Minimum distance | 2.880 km |
| Height difference | 2.467 km |
| Relative speed | 8.228 km/s |
| Angle between velocity vectors | 71° |
| Geographic position | 67.3°S, 14.2°W |
| Height | 1514 km |
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