| Primary satellite | Secondary satellite |
| Name | NOAA 15 | COSMOS 2251 DEB |
| Spacetrack catalog number | 25338 | 33848 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2023 May 29 16:58 | 2023 May 29 11:40 |
| Time of closest approach (UTC) | 2023 Apr 04 10:38:54.346 |
| Minimum distance | 261.674 km |
| Height difference | 0.502 km |
| Relative speed | 12.583 km/s |
| Angle between velocity vectors | 115° |
| Geographic position | 75.6°N, 96.7°E |
| Height | 818 km |
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