| Primary satellite | Secondary satellite |
| Name | STRAND 1 | Cosmos 1125 |
| Spacetrack catalog number | 39090 | 11510 |
| Radar cross section | small | large |
| Epoch of two-line elements (UTC) | 2023 Jan 26 12:14 | 2023 Jan 26 02:04 |
| Time of closest approach (UTC) | 2022 Dec 02 06:44:31.803 |
| Minimum distance | 18.691 km |
| Height difference | 2.559 km |
| Relative speed | 14.378 km/s |
| Angle between velocity vectors | 150° |
| Geographic position | 71.2°S, 152.3°E |
| Height | 803 km |
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