| Primary satellite | Secondary satellite |
| Name | Cosmos 1844 Rocket | deb Feng Yun 1B |
| Spacetrack catalog number | 17974 | 23258 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2025 Nov 13 06:04 | 2025 Nov 12 10:01 |
| Time of closest approach (UTC) | 2025 Oct 16 09:10:55.639 |
| Minimum distance | 68.346 km |
| Height difference | -3.750 km |
| Relative speed | 8.071 km/s |
| Angle between velocity vectors | 66° |
| Geographic position | 63.5°N, 49.2°W |
| Height | 838 km |
|