| Primary satellite | Secondary satellite |
| Name | SL-16 DEB | Cosmos 1299 |
| Spacetrack catalog number | 39849 | 12783 |
| Radar cross section | small | large |
| Epoch of two-line elements (UTC) | 2024 Dec 19 03:14 | 2024 Dec 23 03:56 |
| Time of closest approach (UTC) | 2024 Dec 26 11:52:05.175 |
| Minimum distance | 2.112 km |
| Height difference | -2.017 km |
| Relative speed | 12.678 km/s |
| Angle between velocity vectors | 119° |
| Geographic position | 42.9°N, 144.0°E |
| Height | 940 km |
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