| Primary satellite | Secondary satellite |
| Name | PDD Test Mass | LEMUR 2 SQUIRRELCOMM |
| Spacetrack catalog number | 20564 | 60578 |
| Radar cross section | medium | small |
| Epoch of two-line elements (UTC) | 2024 Dec 22 18:27 | 2024 Dec 23 04:12 |
| Time of closest approach (UTC) | 2024 Dec 24 09:33:46.888 |
| Minimum distance | 0.304 km |
| Height difference | 0.300 km |
| Relative speed | 14.873 km/s |
| Angle between velocity vectors | 157° |
| Geographic position | 70.1°N, 38.1°E |
| Height | 585 km |
|