| Primary satellite | Secondary satellite |
| Name | NEE 01 PEGASUS | COSMOS 2251 DEB |
| Spacetrack catalog number | 39151 | 34013 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2021 Feb 25 18:14 | 2021 Feb 25 20:10 |
| Time of closest approach (UTC) | 2021 Jan 26 14:13:15.680 |
| Minimum distance | 147.487 km |
| Height difference | 7.170 km |
| Relative speed | 13.686 km/s |
| Angle between velocity vectors | 131° |
| Geographic position | 72.5°S, 55.7°W |
| Height | 666 km |
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