| Primary satellite | Secondary satellite |
| Name | Cosmos 2123 Rocket | FENGYUN 1C DEB |
| Spacetrack catalog number | 21090 | 37003 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2024 Sep 08 14:17 | 2024 Sep 06 08:06 |
| Time of closest approach (UTC) | 2024 Aug 14 13:41:07.105 |
| Minimum distance | 6.047 km |
| Height difference | -0.004 km |
| Relative speed | 14.660 km/s |
| Angle between velocity vectors | 172° |
| Geographic position | 73.9°S, 127.2°E |
| Height | 990 km |
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