| Primary satellite | Secondary satellite |
| Name | HJ-1B | IRIDIUM 33 DEB |
| Spacetrack catalog number | 33321 | 34775 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2024 Dec 23 04:01 | 2024 Dec 22 13:09 |
| Time of closest approach (UTC) | 2024 Dec 29 15:50:13.729 |
| Minimum distance | 3.967 km |
| Height difference | 3.101 km |
| Relative speed | 15.074 km/s |
| Angle between velocity vectors | 175° |
| Geographic position | 43.0°N, 23.4°E |
| Height | 631 km |
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