| Primary satellite | Secondary satellite |
| Name | Meteor 1-31 Rocket | STARLINK-1621 |
| Spacetrack catalog number | 12586 | 46127 |
| Radar cross section | large | large |
| Epoch of two-line elements (UTC) | 2021 Apr 13 05:57 | 2021 Apr 13 07:18 |
| Time of closest approach (UTC) | 2021 Mar 06 00:45:58.644 |
| Minimum distance | 1352.106 km |
| Height difference | 9.050 km |
| Relative speed | 14.745 km/s |
| Angle between velocity vectors | 153° |
| Geographic position | 27.1°S, 118.5°W |
| Height | 549 km |
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