| Primary satellite | Secondary satellite |
| Name | Cosmos 1151 Rocket | deb Delta 89 |
| Spacetrack catalog number | 11672 | 7933 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2021 Apr 11 20:02 | 2021 Apr 11 21:55 |
| Time of closest approach (UTC) | 2021 Mar 07 01:02:21.192 |
| Minimum distance | 4.547 km |
| Height difference | 4.523 km |
| Relative speed | 14.977 km/s |
| Angle between velocity vectors | 161° |
| Geographic position | 80.7°S, 71.3°W |
| Height | 640 km |
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