| Primary satellite | Secondary satellite |
| Name | S-56A Canister/Altair | COSMOS 2251 DEB |
| Spacetrack catalog number | 82 | 34819 |
| Radar cross section | medium | small |
| Epoch of two-line elements (UTC) | 2023 Mar 26 07:29 | 2023 Mar 26 17:58 |
| Time of closest approach (UTC) | 2023 Feb 07 21:32:23.587 |
| Minimum distance | 127.551 km |
| Height difference | 2.495 km |
| Relative speed | 9.168 km/s |
| Angle between velocity vectors | 73° |
| Geographic position | 38.9°N, 141.6°W |
| Height | 751 km |
|