| Primary satellite | Secondary satellite |
| Name | COSMOS 1818 DEB | NOAA 16 DEB |
| Spacetrack catalog number | 36938 | 41717 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2024 Dec 20 12:47 | 2024 Dec 21 03:28 |
| Time of closest approach (UTC) | 2024 Dec 24 06:21:28.765 |
| Minimum distance | 2.880 km |
| Height difference | -2.522 km |
| Relative speed | 14.674 km/s |
| Angle between velocity vectors | 158° |
| Geographic position | 40.5°S, 69.8°W |
| Height | 769 km |
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