| Primary satellite | Secondary satellite |
| Name | Cosmos 1515 Rocket | SL-16 DEB |
| Spacetrack catalog number | 14552 | 29096 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2021 Apr 16 13:18 | 2021 Apr 15 16:44 |
| Time of closest approach (UTC) | 2021 Mar 02 06:48:59.371 |
| Minimum distance | 467.590 km |
| Height difference | -2.972 km |
| Relative speed | 12.726 km/s |
| Angle between velocity vectors | 115° |
| Geographic position | 67.3°S, 31.9°W |
| Height | 641 km |
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