| Primary satellite | Secondary satellite |
| Name | Cosmos 1151 Rocket | OBJECT A |
| Spacetrack catalog number | 11672 | 44879 |
| Radar cross section | large | medium |
| Epoch of two-line elements (UTC) | 2021 Apr 20 17:04 | 2021 Apr 21 10:50 |
| Time of closest approach (UTC) | 2021 Mar 05 18:25:58.914 |
| Minimum distance | 48.399 km |
| Height difference | -0.145 km |
| Relative speed | 11.030 km/s |
| Angle between velocity vectors | 94° |
| Geographic position | 79.7°S, 111.7°E |
| Height | 641 km |
|