| Primary satellite | Secondary satellite |
| Name | COSMOS 2508 | Cosmos 2088 Rocket |
| Spacetrack catalog number | 40921 | 20721 |
| Radar cross section | large | large |
| Epoch of two-line elements (UTC) | 2026 Jan 19 16:09 | 2026 Jan 19 15:52 |
| Time of closest approach (UTC) | 2025 Dec 12 02:22:21.968 |
| Minimum distance | 11.898 km |
| Height difference | 3.957 km |
| Relative speed | 8.528 km/s |
| Angle between velocity vectors | 74° |
| Geographic position | 73.4°S, 51.9°E |
| Height | 1530 km |
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