| Primary satellite | Secondary satellite |
| Name | H-2A R/B | STERKH 2 |
| Spacetrack catalog number | 27601 | 35866 |
| Radar cross section | large | medium |
| Epoch of two-line elements (UTC) | 2025 Jun 19 20:36 | 2025 Jun 20 03:47 |
| Time of closest approach (UTC) | 2025 May 16 09:22:55.620 |
| Minimum distance | 23.957 km |
| Height difference | 3.427 km |
| Relative speed | 0.852 km/s |
| Angle between velocity vectors | 7° |
| Geographic position | 81.0°N, 25.5°W |
| Height | 823 km |
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