| Primary satellite | Secondary satellite |
| Name | Envisat | COSMOS 2251 DEB |
| Spacetrack catalog number | 27386 | 37340 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2023 Jan 28 22:24 | 2023 Jan 28 17:50 |
| Time of closest approach (UTC) | 2022 Dec 07 11:30:07.947 |
| Minimum distance | 6.438 km |
| Height difference | -2.685 km |
| Relative speed | 14.906 km/s |
| Angle between velocity vectors | 171° |
| Geographic position | 31.0°N, 60.9°E |
| Height | 769 km |
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