| Primary satellite | Secondary satellite |
| Name | STRAND 1 | COSMOS 2251 DEB |
| Spacetrack catalog number | 39090 | 34574 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2023 Jun 08 12:00 | 2023 Jun 08 06:11 |
| Time of closest approach (UTC) | 2023 Apr 07 21:17:03.132 |
| Minimum distance | 132.708 km |
| Height difference | -9.040 km |
| Relative speed | 14.874 km/s |
| Angle between velocity vectors | 173° |
| Geographic position | 2.3°N, 137.7°E |
| Height | 778 km |
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