| Primary satellite | Secondary satellite |
| Name | Cosmos 1025 Rocket | COSMOS 2515 |
| Spacetrack catalog number | 10974 | 41394 |
| Radar cross section | large | large |
| Epoch of two-line elements (UTC) | 2021 Jan 17 17:18 | 2021 Jan 17 18:43 |
| Time of closest approach (UTC) | 2020 Dec 04 09:43:23.317 |
| Minimum distance | 16.130 km |
| Height difference | -1.434 km |
| Relative speed | 13.621 km/s |
| Angle between velocity vectors | 129° |
| Geographic position | 81.6°N, 52.3°W |
| Height | 609 km |
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