| Primary satellite | Secondary satellite |
| Name | Cosmos 1271 Rocket | GHGSAT-C4 |
| Spacetrack catalog number | 12465 | 52746 |
| Radar cross section | large | medium |
| Epoch of two-line elements (UTC) | 2024 Oct 04 11:49 | 2024 Oct 04 12:35 |
| Time of closest approach (UTC) | 2024 Sep 22 02:08:45.424 |
| Minimum distance | 1.003 km |
| Height difference | 1.002 km |
| Relative speed | 15.181 km/s |
| Angle between velocity vectors | 178° |
| Geographic position | 55.3°S, 2.7°E |
| Height | 526 km |
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