| Primary satellite | Secondary satellite |
| Name | Courier 1B | COSMOS 1275 DEB |
| Spacetrack catalog number | 58 | 42184 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2024 Oct 13 11:49 | 2024 Oct 12 13:35 |
| Time of closest approach (UTC) | 2024 Sep 15 23:09:02.292 |
| Minimum distance | 10.250 km |
| Height difference | 4.782 km |
| Relative speed | 10.155 km/s |
| Angle between velocity vectors | 87° |
| Geographic position | 28.0°S, 59.6°E |
| Height | 1018 km |
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