| Primary satellite | Secondary satellite |
| Name | Hubble Space Telescope | OBJECT BG |
| Spacetrack catalog number | 20580 | 47467 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2021 Apr 16 04:04 | 2021 Apr 15 16:37 |
| Time of closest approach (UTC) | 2021 Mar 05 19:43:40.819 |
| Minimum distance | 12.917 km |
| Height difference | -3.329 km |
| Relative speed | 11.627 km/s |
| Angle between velocity vectors | 100° |
| Geographic position | 28.6°S, 155.9°W |
| Height | 544 km |
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