| Primary satellite | Secondary satellite |
| Name | Cosmos 2151 | AO-73 |
| Spacetrack catalog number | 21422 | 39444 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2023 Jan 26 17:19 | 2023 Jan 26 21:49 |
| Time of closest approach (UTC) | 2022 Dec 02 00:17:42.854 |
| Minimum distance | 390.419 km |
| Height difference | 7.155 km |
| Relative speed | 14.731 km/s |
| Angle between velocity vectors | 155° |
| Geographic position | 78.1°S, 68.9°W |
| Height | 624 km |
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