| Primary satellite | Secondary satellite |
| Name | Meteor 1-15 Rocket | COSMOS 2251 DEB |
| Spacetrack catalog number | 6660 | 34413 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2021 Jan 17 19:30 | 2021 Jan 17 20:47 |
| Time of closest approach (UTC) | 2020 Nov 30 02:49:55.884 |
| Minimum distance | 328.430 km |
| Height difference | -0.662 km |
| Relative speed | 10.599 km/s |
| Angle between velocity vectors | 92° |
| Geographic position | 69.8°S, 87.3°E |
| Height | 927 km |
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