| Primary satellite | Secondary satellite |
| Name | Hubble Space Telescope | COSMOS 2251 DEB |
| Spacetrack catalog number | 20580 | 35996 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2025 Apr 27 20:28 | 2025 Apr 27 23:49 |
| Time of closest approach (UTC) | 2024 Jun 14 12:08:17.609 |
| Minimum distance | 2821.431 km |
| Height difference | 177.660 km |
| Relative speed | 11.569 km/s |
| Angle between velocity vectors | 100° |
| Geographic position | 11.5°S, 104.4°W |
| Height | 497 km |
|