Just guessing, but this might be on one of the four KZ-1A launches. I have LS-1 flying in March.
Still looking for any hint about a launch tomorrow. Until the moment, nothing new in the Eastern front!
Could this launch be performed without publication of NOTAMs?--Messaging only to those specific flights that would be affected?That has happened before for some Chinese launches, yes?
Looks like spaceflightfans.cn has just changed the launch date for this one to December 29, with a question mark. They probably don't have much more info than us.
To clarify, this is the current situation at the original 3 Chinese launch sites:<snip>Taiyuan- ZY-1-02D on CZ-4B - Nothing has been heard of it so far. spaceflightfans.cn current list this on December 29, but with a question mark.<snip>
China launch schedule[/b]2019?? - CZ-4B (Y39) - TSLC, LC9 - ZY-2D Ziyuan-2D, Tianyi MV-1, BNU-1December 19
The situation for this one is.....still unclear. spaceflightfans.cn now has it firmly listed with Ziyuan-1-02D but with a NET Dec. 30 date and the note that it might end up in 2019.On the other hand there are official articles after the latest Chinese launch that the CZ-2C, 3 series and 11 have closed out their 2018 schedules - but curiously left out the CZ-4 series (built by a different institute as with the 2D). We might know more when the next launch happens on the 29th. ¯\_(ツ)_/¯
Latest early quick-look rumors points to structural resonance problems between the 3rd stage and the payload - which the source indicates that "these usually pops up with larger payloads where low frequency resonance is big". Not sure if that's a mechanical integrity or a propellant sloshing problem, but it's interesting to see that both GF-10 and YG-33 were rumored/predicted as SAR satellites and that both launch failures were rumored to be at 3rd stage engine re-ignition.