| Primary satellite | Secondary satellite |
| Name | COSMOS 2508 | deb Delta 98 |
| Spacetrack catalog number | 40921 | 7133 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2026 Jan 19 16:09 | 2026 Jan 18 08:49 |
| Time of closest approach (UTC) | 2025 Dec 10 00:17:52.798 |
| Minimum distance | 4.529 km |
| Height difference | 0.028 km |
| Relative speed | 14.188 km/s |
| Angle between velocity vectors | 174° |
| Geographic position | 46.0°S, 104.7°E |
| Height | 1518 km |
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