| Primary satellite | Secondary satellite |
| Name | Kosmos-1226 | Kosmos-2172 |
| Spacetrack catalog number | 12091 | 21796 |
| Radar cross section | large | large |
| Epoch of two-line elements (UTC) | 2026 Jan 13 13:47 | 2026 Jan 13 12:41 |
| Time of closest approach (UTC) | 2025 Dec 11 23:49:51.944 |
| Minimum distance | 6.095 km |
| Height difference | 5.670 km |
| Relative speed | 14.510 km/s |
| Angle between velocity vectors | 161° |
| Geographic position | 43.0°N, 122.4°W |
| Height | 987 km |
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