| Primary satellite | Secondary satellite |
| Name | SeaSat 1 | COSMOS 2251 DEB |
| Spacetrack catalog number | 10967 | 34021 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2026 Jan 15 17:12 | 2026 Jan 15 13:52 |
| Time of closest approach (UTC) | 2025 Dec 15 11:04:57.564 |
| Minimum distance | 8.668 km |
| Height difference | 0.514 km |
| Relative speed | 14.955 km/s |
| Angle between velocity vectors | 176° |
| Geographic position | 58.6°N, 26.1°E |
| Height | 748 km |
|