| Primary satellite | Secondary satellite |
| Name | CENTAUR R/B | Cosmos 516 |
| Spacetrack catalog number | 26906 | 6154 |
| Radar cross section | | large |
| Epoch of two-line elements (UTC) | 2021 Mar 31 19:53 | 2021 Apr 10 13:15 |
| Time of closest approach (UTC) | 2021 Mar 07 15:10:50.488 |
| Minimum distance | 11.436 km |
| Height difference | -3.843 km |
| Relative speed | 4.612 km/s |
| Angle between velocity vectors | 36° |
| Geographic position | 62.7°S, 23.4°W |
| Height | 942 km |
|