| Primary satellite | Secondary satellite |
| Name | DELTA 2 R/B (1) | FENGYUN 1C DEB |
| Spacetrack catalog number | 27665 | 31757 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2025 Dec 13 04:17 | 2025 Dec 12 08:29 |
| Time of closest approach (UTC) | 2024 Nov 15 01:48:33.942 |
| Minimum distance | 4999.835 km |
| Height difference | -49.934 km |
| Relative speed | 9.212 km/s |
| Angle between velocity vectors | 76° |
| Geographic position | 7.3°S, 105.7°E |
| Height | 789 km |
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