| Primary satellite | Secondary satellite |
| Name | CORIOLIS | COSMOS 2251 DEB |
| Spacetrack catalog number | 27640 | 34622 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2021 Mar 05 19:33 | 2021 Mar 05 15:30 |
| Time of closest approach (UTC) | 2021 Jan 23 08:03:50.741 |
| Minimum distance | 26.178 km |
| Height difference | -4.365 km |
| Relative speed | 14.508 km/s |
| Angle between velocity vectors | 154° |
| Geographic position | 70.2°N, 126.5°E |
| Height | 835 km |
|