| Primary satellite | Secondary satellite |
| Name | Spot 2 | COSMOS 2251 DEB |
| Spacetrack catalog number | 20436 | 39584 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2021 Apr 10 12:13 | 2021 Apr 10 00:57 |
| Time of closest approach (UTC) | 2021 Mar 01 04:55:03.069 |
| Minimum distance | 105.787 km |
| Height difference | -3.998 km |
| Relative speed | 13.347 km/s |
| Angle between velocity vectors | 124° |
| Geographic position | 74.9°N, 161.0°E |
| Height | 646 km |
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