| Primary satellite | Secondary satellite |
| Name | Hubble Space Telescope | OBSERVER-1A |
| Spacetrack catalog number | 20580 | 58323 |
| Radar cross section | large | medium |
| Epoch of two-line elements (UTC) | 2024 Dec 14 01:52 | 2024 Dec 14 18:47 |
| Time of closest approach (UTC) | 2024 Nov 13 06:37:30.622 |
| Minimum distance | 171.801 km |
| Height difference | 3.133 km |
| Relative speed | 9.117 km/s |
| Angle between velocity vectors | 74° |
| Geographic position | 15.9°N, 60.3°E |
| Height | 499 km |
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