| Primary satellite | Secondary satellite |
Name | Cosmos 1515 Rocket | COSMOS 2251 DEB |
Spacetrack catalog number | 14552 | 34439 |
Radar cross section | large | small |
Epoch of two-line elements (UTC) | 2021 Apr 18 12:14 | 2021 Apr 18 12:46 |
Time of closest approach (UTC) | 2021 Mar 01 08:56:59.947 |
Minimum distance | 43.652 km |
Height difference | -1.499 km |
Relative speed | 12.005 km/s |
Angle between velocity vectors | 105° |
Geographic position | 69.7°N, 115.4°E |
Height | 631 km |
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