| Primary satellite | Secondary satellite |
| Name | Cosmos 2278 Rocket | deb Delta 139 |
| Spacetrack catalog number | 23088 | 12266 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2025 Nov 16 16:16 | 2025 Nov 15 23:18 |
| Time of closest approach (UTC) | 2025 Oct 12 20:09:33.228 |
| Minimum distance | 171.302 km |
| Height difference | 0.191 km |
| Relative speed | 7.942 km/s |
| Angle between velocity vectors | 64° |
| Geographic position | 62.2°N, 97.8°E |
| Height | 853 km |
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