| Primary satellite | Secondary satellite |
| Name | Cosmos 2298 Rocket | COSMOS 2251 DEB |
| Spacetrack catalog number | 23432 | 35840 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2021 Jan 16 04:04 | 2021 Jan 16 03:55 |
| Time of closest approach (UTC) | 2020 Dec 04 13:51:11.195 |
| Minimum distance | 71.079 km |
| Height difference | -1.264 km |
| Relative speed | 11.583 km/s |
| Angle between velocity vectors | 102° |
| Geographic position | 63.8°S, 175.0°W |
| Height | 805 km |
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