| Primary satellite | Secondary satellite |
| Name | JY1SAT | COSMOS 2251 DEB |
| Spacetrack catalog number | 43803 | 37488 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2021 Feb 24 17:57 | 2021 Feb 25 04:40 |
| Time of closest approach (UTC) | 2021 Jan 21 00:07:20.750 |
| Minimum distance | 67.366 km |
| Height difference | 7.173 km |
| Relative speed | 14.945 km/s |
| Angle between velocity vectors | 161° |
| Geographic position | 59.7°S, 139.0°E |
| Height | 596 km |
|