| Primary satellite | Secondary satellite |
| Name | ARGOS Delta rocket | DMSP 5D-2 F11 DEB |
| Spacetrack catalog number | 25637 | 28303 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2021 Mar 05 20:21 | 2021 Mar 05 16:39 |
| Time of closest approach (UTC) | 2021 Jan 23 17:38:34.457 |
| Minimum distance | 2.684 km |
| Height difference | -2.455 km |
| Relative speed | 3.560 km/s |
| Angle between velocity vectors | 28° |
| Geographic position | 80.9°S, 101.8°E |
| Height | 849 km |
|