| Primary satellite | Secondary satellite |
| Name | deb Delta 139 | FENGYUN 1C DEB |
| Spacetrack catalog number | 13563 | 30675 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2024 Dec 23 00:28 | 2024 Dec 23 03:36 |
| Time of closest approach (UTC) | 2024 Dec 23 23:21:23.763 |
| Minimum distance | 4.186 km |
| Height difference | -0.267 km |
| Relative speed | 7.727 km/s |
| Angle between velocity vectors | 63° |
| Geographic position | 79.7°S, 46.3°E |
| Height | 878 km |
|