| Primary satellite | Secondary satellite |
| Name | ARGOS | COSMOS 2251 DEB |
| Spacetrack catalog number | 25634 | 33995 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2024 Dec 08 13:35 | 2024 Dec 08 12:53 |
| Time of closest approach (UTC) | 2024 Nov 17 19:14:04.449 |
| Minimum distance | 44.597 km |
| Height difference | -1.947 km |
| Relative speed | 14.755 km/s |
| Angle between velocity vectors | 167° |
| Geographic position | 51.8°N, 147.2°E |
| Height | 840 km |
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