| Primary satellite | Secondary satellite |
| Name | Cosmos 1666 Rocket | PEGASUS R/B |
| Spacetrack catalog number | 15890 | 27652 |
| Radar cross section | large | large |
| Epoch of two-line elements (UTC) | 2022 Jul 03 11:57 | 2022 Jul 03 12:39 |
| Time of closest approach (UTC) | 2022 Jun 01 23:51:39.705 |
| Minimum distance | 76.277 km |
| Height difference | 1.293 km |
| Relative speed | 9.572 km/s |
| Angle between velocity vectors | 79° |
| Geographic position | 39.7°S, 111.3°E |
| Height | 624 km |
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