| Primary satellite | Secondary satellite |
| Name | Envisat | OPS 1127 |
| Spacetrack catalog number | 27386 | 4047 |
| Radar cross section | large | medium |
| Epoch of two-line elements (UTC) | 2026 Jan 19 07:58 | 2026 Jan 19 02:46 |
| Time of closest approach (UTC) | 2025 Dec 15 21:39:58.757 |
| Minimum distance | 3.420 km |
| Height difference | 0.512 km |
| Relative speed | 10.869 km/s |
| Angle between velocity vectors | 93° |
| Geographic position | 77.8°N, 113.3°E |
| Height | 775 km |
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