| Primary satellite | Secondary satellite |
| Name | Cosmos 1125 Rocket | Orbcomm 16 |
| Spacetrack catalog number | 11511 | 25416 |
| Radar cross section | large | medium |
| Epoch of two-line elements (UTC) | 2021 Jan 16 12:51 | 2021 Jan 16 14:05 |
| Time of closest approach (UTC) | 2020 Dec 02 11:08:44.713 |
| Minimum distance | 23.078 km |
| Height difference | 0.801 km |
| Relative speed | 8.449 km/s |
| Angle between velocity vectors | 69° |
| Geographic position | 45.2°S, 109.0°E |
| Height | 795 km |
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