| Primary satellite | Secondary satellite |
| Name | STRAND 1 | COSMOS 2251 DEB |
| Spacetrack catalog number | 39090 | 35671 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2023 Jun 08 12:00 | 2023 Jun 07 12:56 |
| Time of closest approach (UTC) | 2023 Apr 07 07:05:09.861 |
| Minimum distance | 16.909 km |
| Height difference | -2.357 km |
| Relative speed | 14.886 km/s |
| Angle between velocity vectors | 172° |
| Geographic position | 7.1°S, 170.0°E |
| Height | 775 km |
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