| Primary satellite | Secondary satellite |
| Name | deb Delta 126 | Kosmos-2187 |
| Spacetrack catalog number | 10831 | 21976 |
| Radar cross section | small | medium |
| Epoch of two-line elements (UTC) | 2024 Dec 19 16:27 | 2024 Dec 23 09:09 |
| Time of closest approach (UTC) | 2024 Dec 29 15:36:56.671 |
| Minimum distance | 4.615 km |
| Height difference | 0.089 km |
| Relative speed | 14.136 km/s |
| Angle between velocity vectors | 172° |
| Geographic position | 40.0°S, 121.9°E |
| Height | 1470 km |
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