| Primary satellite | Secondary satellite |
| Name | STARS | TURKSAT 3U |
| Spacetrack catalog number | 33498 | 39152 |
| Radar cross section | medium | medium |
| Epoch of two-line elements (UTC) | 2021 Mar 03 09:46 | 2021 Mar 03 05:39 |
| Time of closest approach (UTC) | 2021 Jan 22 11:40:13.190 |
| Minimum distance | 5.523 km |
| Height difference | -2.957 km |
| Relative speed | 14.222 km/s |
| Angle between velocity vectors | 142° |
| Geographic position | 64.6°S, 20.2°W |
| Height | 663 km |
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