| Primary satellite | Secondary satellite |
| Name | AIST 1 | Cosmos 397 |
| Spacetrack catalog number | 39492 | 4964 |
| Radar cross section | medium | large |
| Epoch of two-line elements (UTC) | 2024 Dec 23 13:58 | 2024 Dec 23 12:50 |
| Time of closest approach (UTC) | 2024 Dec 26 05:13:09.524 |
| Minimum distance | 3.075 km |
| Height difference | 3.066 km |
| Relative speed | 11.992 km/s |
| Angle between velocity vectors | 102° |
| Geographic position | 62.4°N, 62.9°E |
| Height | 609 km |
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