| Primary satellite | Secondary satellite |
| Name | NOAA 15 | COSMOS 2251 DEB |
| Spacetrack catalog number | 25338 | 35789 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2024 Dec 22 19:39 | 2024 Dec 22 14:34 |
| Time of closest approach (UTC) | 2024 Dec 28 11:56:19.202 |
| Minimum distance | 2.752 km |
| Height difference | -2.343 km |
| Relative speed | 14.846 km/s |
| Angle between velocity vectors | 173° |
| Geographic position | 8.6°S, 111.2°E |
| Height | 811 km |
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