| Primary satellite | Secondary satellite |
| Name | CZ-4 R/B | STARLINK-1145 |
| Spacetrack catalog number | 29507 | 45066 |
| Radar cross section | large | large |
| Epoch of two-line elements (UTC) | 2021 Apr 16 02:04 | 2021 Apr 15 21:30 |
| Time of closest approach (UTC) | 2021 Mar 07 03:17:49.821 |
| Minimum distance | 275.096 km |
| Height difference | -2.089 km |
| Relative speed | 12.017 km/s |
| Angle between velocity vectors | 105° |
| Geographic position | 55.0°S, 110.8°W |
| Height | 568 km |
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