Space.com by Tariq Malik 8/24/2019
An uncrewed Russian Soyuz spacecraft was forced to abort an attempted docking at the International Space Station early Saturday (Aug. 24) due to rendezvous system malfunction.
The Roscosmos Soyuz MS-14 spacecraft, which is carrying supplies and a humanoid robot called Skybot F-850, was on its final approach to the space station when its automated docking system failed to lock on to its intended docking port: a space-facing module called Poisk. Cosmonaut Alexey Ovchinin, the station's commander, triggered an abort command for the Soyuz at 1:36 a.m. EDT (0536 GMT) after multiple attempts to make the rendezvous with primary and backup systems failed.
"At no point was the crew in any danger," NASA spokesperson Rob Navias said of the station's six-person Expedition 60 crew during live commentary.
The Soyuz is now trailing the space station at a safe distance away in a so-called "race track orbit" that can allow additional docking attempts every 24 hours, Navias said. The next attempt will occur no earlier than overnight Sunday or early Monday (Aug. 25-26).
Docking abort
Roscosmos flight controllers suspect that a bad signal amplifier on the station's Kurs rendezvous system may have led to the docking abort. They've asked Ovchinin and his fellow cosmonaut Alexander Skvortsov to replace the amplifier in the hopes that solves the problem.
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