| Primary satellite | Secondary satellite |
| Name | STARLINK-3504 | FLOCK 3S 1 |
| Spacetrack catalog number | 51881 | 43770 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2024 Dec 23 04:34 | 2024 Dec 23 03:22 |
| Time of closest approach (UTC) | 2024 Dec 23 14:16:41.462 |
| Minimum distance | 4.712 km |
| Height difference | -2.964 km |
| Relative speed | 13.345 km/s |
| Angle between velocity vectors | 123° |
| Geographic position | 50.0°S, 115.1°E |
| Height | 558 km |
|