| Primary satellite | Secondary satellite |
| Name | SPROUT | IRIDIUM 33 DEB |
| Spacetrack catalog number | 39770 | 34764 |
| Radar cross section | medium | small |
| Epoch of two-line elements (UTC) | 2021 Feb 25 12:53 | 2021 Feb 25 02:14 |
| Time of closest approach (UTC) | 2021 Jan 22 05:28:14.192 |
| Minimum distance | 700.151 km |
| Height difference | 1.474 km |
| Relative speed | 13.367 km/s |
| Angle between velocity vectors | 125° |
| Geographic position | 80.6°S, 53.3°E |
| Height | 629 km |
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