| Primary satellite | Secondary satellite |
| Name | Cosmos 1666 Rocket | DELTA 1 DEB |
| Spacetrack catalog number | 15890 | 27729 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2022 Jul 01 21:06 | 2022 Jun 30 23:55 |
| Time of closest approach (UTC) | 2022 May 31 02:51:09.074 |
| Minimum distance | 229.700 km |
| Height difference | -2.941 km |
| Relative speed | 9.742 km/s |
| Angle between velocity vectors | 79° |
| Geographic position | 29.9°N, 80.6°E |
| Height | 609 km |
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