| Primary satellite | Secondary satellite |
| Name | Okean 1 Rocket | COSMOS 2251 DEB |
| Spacetrack catalog number | 19275 | 34069 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2021 Jan 15 17:22 | 2021 Jan 15 21:42 |
| Time of closest approach (UTC) | 2020 Dec 05 14:26:37.855 |
| Minimum distance | 81.123 km |
| Height difference | 2.114 km |
| Relative speed | 14.442 km/s |
| Angle between velocity vectors | 147° |
| Geographic position | 46.1°S, 121.1°E |
| Height | 646 km |
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