| Primary satellite | Secondary satellite |
| Name | Cosmos 2173 Rocket | deb Delta 104 |
| Spacetrack catalog number | 21797 | 8438 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2025 Nov 16 17:29 | 2025 Nov 16 15:15 |
| Time of closest approach (UTC) | 2025 Oct 15 01:46:57.453 |
| Minimum distance | 117.573 km |
| Height difference | 9.893 km |
| Relative speed | 14.521 km/s |
| Angle between velocity vectors | 164° |
| Geographic position | 67.6°S, 105.4°W |
| Height | 996 km |
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