Analysis of information sources in references of the Wikipedia article "List of Starlink and Starshield launches" in English language version.
Space Exploration Holdings, LLC seeks to modify its Ku/Ka-band NGSO license to relocate satellites previously authorized to operate at an altitude of 1,150 km (710 mi) to an altitude of 550 km (340 mi), and to make related changes to the operations of the satellites in this new lower shell of the constellation
Falcon 9's second stage performed its first burn nominally, however a liquid oxygen leak developed on the second stage. After a planned relight of the upper stage engine to raise perigee – or the lowest point of orbit – the Merlin Vacuum engine experienced an anomaly and was unable to complete its second burn. This left the satellites in an eccentric orbit with a very low perigee of 135 km, which is less than half the expected perigee altitude. [...] At this level of drag, our maximum available thrust is unlikely to be enough to successfully raise the satellites.
Space Exploration Holdings, LLC seeks to modify its Ku/Ka-band NGSO license to relocate satellites previously authorized to operate at an altitude of 1,150 km (710 mi) to an altitude of 550 km (340 mi), and to make related changes to the operations of the satellites in this new lower shell of the constellation
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