| Primary satellite | Secondary satellite |
| Name | ARGOS | SL-16 DEB |
| Spacetrack catalog number | 25634 | 39876 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2021 Apr 14 02:49 | 2021 Apr 14 01:48 |
| Time of closest approach (UTC) | 2021 Mar 09 00:05:40.326 |
| Minimum distance | 20.899 km |
| Height difference | 2.032 km |
| Relative speed | 13.685 km/s |
| Angle between velocity vectors | 134° |
| Geographic position | 69.7°S, 88.8°E |
| Height | 846 km |
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