| Primary satellite | Secondary satellite |
| Name | NOAA 15 | COSMOS 2251 DEB |
| Spacetrack catalog number | 25338 | 35433 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2023 May 29 16:58 | 2023 May 29 15:07 |
| Time of closest approach (UTC) | 2023 Apr 08 20:40:11.166 |
| Minimum distance | 60.489 km |
| Height difference | -2.987 km |
| Relative speed | 14.667 km/s |
| Angle between velocity vectors | 160° |
| Geographic position | 66.6°N, 38.1°W |
| Height | 816 km |
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