| Primary satellite | Secondary satellite |
| Name | Meteor 2-21 | Kosmos-628 |
| Spacetrack catalog number | 22782 | 7094 |
| Radar cross section | large | large |
| Epoch of two-line elements (UTC) | 2025 Nov 17 20:17 | 2025 Nov 17 20:03 |
| Time of closest approach (UTC) | 2025 Oct 12 18:04:43.848 |
| Minimum distance | 9.751 km |
| Height difference | -3.121 km |
| Relative speed | 13.063 km/s |
| Angle between velocity vectors | 124° |
| Geographic position | 74.3°N, 134.0°W |
| Height | 968 km |
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