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BEGIN:VEVENT
SUMMARY:Long March CZ-2D • Hongtu 13–16
DTSTART;VALUE=DATE-TIME:20260919T105100Z
DTEND;VALUE=DATE-TIME:20260919T105100Z
UID:239906047739
DESCRIPTION:A Chinese Long March (Chang Zheng) CZ-2D rocket will launch fo
 ur PIESAT formation-flying SAR satellites for the Hangtian Hongtu constell
 ation into orbit. This fourth group of satellites consists of one 320kg ma
 in sat (named Zhongyuan 2?) and three 270kg accompanying sats (named ?)\, 
 that operate in the X-Band using very long baseline interferometry. They a
 re also designated as PIESAT/Hongtu 2-05 to 2-08. These satellites make up
  the first wheel-pattern satellite formation\, with the master satellite i
 n the center of an imaginary hub and the three assistant satellites distri
 buted evenly on the spokes. The formation uses phase synchronization and i
 nter-satellite communication links to enable accurate orbit control\, ensu
 ring its stability and spatial safety. According to GalaxySpace the wheel-
 pattern formation\, in comparison to conventional interferometric satellit
 e systems\, has the advantages of a relatively stable formation configurat
 ion\, multiple interference baselines\, and high mapping efficiency. These
  satellites' millimeter-level deformation monitoring capability\, which ca
 n provide data support for the investigation and prevention of land subsid
 ence\, collapse\, landslides\, and other disasters\, makes them a powerful
  tool for early identification of major geological hazards in complex area
 s. The CZ-2D launcher will fly with a 3.8m composite fairing.\n-\nDelayed 
 from Mar. 15\, May 16\, Aug. 24 and Oct. 9 2025.\n\nWebcast: https://www.y
 outube.com/live/ozqTZuYBnR4
LOCATION:Launch Complex 9 - Taiyuan Satellite Launch Center https://goo.gl
 /maps/AMZU5LFG8p2YtuQj7
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