| Primary satellite | Secondary satellite |
| Name | Cosmos 968 Rocket | DELTA 1 DEB |
| Spacetrack catalog number | 10521 | 42661 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2025 Jun 15 13:05 | 2025 Jun 15 19:28 |
| Time of closest approach (UTC) | 2025 May 21 04:04:42.651 |
| Minimum distance | 5.698 km |
| Height difference | -2.310 km |
| Relative speed | 14.797 km/s |
| Angle between velocity vectors | 163° |
| Geographic position | 62.3°N, 38.8°E |
| Height | 763 km |
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