| Primary satellite | Secondary satellite |
| Name | Cosmos 1515 | DRUMS TARGET-1 |
| Spacetrack catalog number | 14551 | 55685 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2024 Sep 07 22:24 | 2024 Sep 07 20:58 |
| Time of closest approach (UTC) | 2024 Aug 14 21:07:09.531 |
| Minimum distance | 1101.403 km |
| Height difference | -22.068 km |
| Relative speed | 15.278 km/s |
| Angle between velocity vectors | 173° |
| Geographic position | 38.6°S, 4.8°W |
| Height | 456 km |
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