| Primary satellite | Secondary satellite |
| Name | THORAD AGENA D DEB | COSMOS 2491 DEB |
| Spacetrack catalog number | 42511 | 57570 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2024 Dec 22 01:34 | 2024 Dec 20 02:43 |
| Time of closest approach (UTC) | 2024 Dec 29 22:05:06.458 |
| Minimum distance | 1.439 km |
| Height difference | 0.758 km |
| Relative speed | 14.142 km/s |
| Angle between velocity vectors | 175° |
| Geographic position | 44.5°S, 112.5°W |
| Height | 1506 km |
|