| Primary satellite | Secondary satellite |
| Name | Cosmos 2150 Rocket | IRIDIUM 47 DEB |
| Spacetrack catalog number | 21419 | 40254 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2021 Jan 20 04:34 | 2021 Jan 18 23:48 |
| Time of closest approach (UTC) | 2020 Dec 06 20:06:35.120 |
| Minimum distance | 68.578 km |
| Height difference | 0.971 km |
| Relative speed | 10.297 km/s |
| Angle between velocity vectors | 86° |
| Geographic position | 73.8°N, 161.3°W |
| Height | 765 km |
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