| Primary satellite | Secondary satellite |
| Name | Cosmos 1697 Rocket | COSMOS 2251 DEB |
| Spacetrack catalog number | 16182 | 35455 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2021 Mar 07 21:31 | 2021 Mar 07 20:10 |
| Time of closest approach (UTC) | 2021 Jan 19 18:09:42.711 |
| Minimum distance | 177.557 km |
| Height difference | -2.575 km |
| Relative speed | 12.763 km/s |
| Angle between velocity vectors | 119° |
| Geographic position | 52.8°S, 58.7°W |
| Height | 853 km |
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