| Primary satellite | Secondary satellite |
| Name | ISS | ERBS |
| Spacetrack catalog number | 25544 | 15354 |
| Radar cross section | large | large |
| Epoch of two-line elements (UTC) | 2021 Apr 15 06:38 | 2021 Apr 14 12:24 |
| Time of closest approach (UTC) | 2021 Mar 04 11:29:19.926 |
| Minimum distance | 1376.611 km |
| Height difference | -8.621 km |
| Relative speed | 10.667 km/s |
| Angle between velocity vectors | 88° |
| Geographic position | 41.3°S, 29.6°E |
| Height | 436 km |
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