| Primary satellite | Secondary satellite |
| Name | Sep Motor Cover | COBE dewar cap |
| Spacetrack catalog number | 24299 | 20328 |
| Radar cross section | small | medium |
| Epoch of two-line elements (UTC) | 2024 Dec 22 14:42 | 2024 Dec 23 00:09 |
| Time of closest approach (UTC) | 2024 Dec 24 00:23:28.853 |
| Minimum distance | 1.331 km |
| Height difference | -1.237 km |
| Relative speed | 7.646 km/s |
| Angle between velocity vectors | 62° |
| Geographic position | 61.6°N, 99.2°E |
| Height | 888 km |
|