| Primary satellite | Secondary satellite |
| Name | Transit 4A | deb r/b Ablestar |
| Spacetrack catalog number | 116 | 3842 |
| Radar cross section | medium | small |
| Epoch of two-line elements (UTC) | 2021 Jan 23 08:47 | 2021 Jan 23 08:44 |
| Time of closest approach (UTC) | 2020 Nov 28 06:15:16.629 |
| Minimum distance | 97.613 km |
| Height difference | 4.372 km |
| Relative speed | 2.846 km/s |
| Angle between velocity vectors | 22° |
| Geographic position | 66.3°N, 82.7°E |
| Height | 991 km |
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