| Primary satellite | Secondary satellite |
| Name | Cosmos 2221 | GNOMES-1 |
| Spacetrack catalog number | 22236 | 46266 |
| Radar cross section | large | medium |
| Epoch of two-line elements (UTC) | 2024 Dec 23 12:06 | 2024 Dec 23 12:11 |
| Time of closest approach (UTC) | 2024 Dec 25 11:57:23.687 |
| Minimum distance | 2.201 km |
| Height difference | -2.079 km |
| Relative speed | 14.215 km/s |
| Angle between velocity vectors | 140° |
| Geographic position | 81.9°S, 1.4°W |
| Height | 609 km |
|