| Primary satellite | Secondary satellite |
| Name | NOAA 15 | COSMOS 2251 DEB |
| Spacetrack catalog number | 25338 | 37484 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2023 May 29 16:58 | 2023 May 28 09:10 |
| Time of closest approach (UTC) | 2023 Mar 21 15:58:51.317 |
| Minimum distance | 258.100 km |
| Height difference | -3.740 km |
| Relative speed | 14.516 km/s |
| Angle between velocity vectors | 155° |
| Geographic position | 64.1°S, 70.7°E |
| Height | 827 km |
|