Author Topic: Gaofen 12 - CZ-4C - Taiyuan - November 27, 2019 (23:52 UTC)  (Read 11117 times)

Offline Galactic Penguin SST

https://twitter.com/LaunchStuff/status/1197516706991820800

https://twitter.com/LaunchStuff/status/1197528656698134529

Chinese sources do anticipate an LM-4C launch in recent days so this would fit.
Alas no payload can be identified with it - the only known choice, FY-3E, doesn't fit with the launch time (06:00 LT at desc. node SSO would require a T-0 closer to 22:45 UTC). So, um, something else maybe?
« Last Edit: 01/03/2020 09:04 am by input~2 »
Astronomy & spaceflight geek penguin. In a relationship w/ Space Shuttle Discovery. Current Priority: Chasing the Chinese Spaceflight Wonder Egg & A Certain Chinese Mars Rover

Online zubenelgenubi

  • Global Moderator
  • Senior Member
  • *****
  • Posts: 11345
  • Arc to Arcturus, then Spike to Spica
  • Sometimes it feels like Trantor in the time of Hari Seldon
  • Liked: 7543
  • Likes Given: 73582
Re: ?? - CZ-4C? - Taiyuan - November 25, 2019 (~23:50 UTC)
« Reply #1 on: 11/21/2019 07:46 pm »
As of this post, we have two or more mystery payloads launching on the same UTC date!

(This launch and the Soyuz-2-1v/Volga launch from Plesetsk)
***

EDITs 11/24 11/25: Three Two One orbital launches scheduled for 11/25 UTC!
The Kosmos launch from Plesetsk, VA250 from Kourou, and this launch.
« Last Edit: 11/25/2019 04:52 pm by zubenelgenubi »
Support your local planetarium! (COVID-panic and forward: Now more than ever.) My current avatar is saying "i wants to go uppies!" Yes, there are God-given rights. Do you wish to gainsay the Declaration of Independence?

Online Josh_from_Canada

  • Full Member
  • ****
  • Posts: 544
  • Saskatchewan Canada
  • Liked: 584
  • Likes Given: 182
Re: ?? - CZ-4C? - Taiyuan - November 25, 2019 (~23:50 UTC)
« Reply #2 on: 11/22/2019 03:28 am »
If this launch is a Long March 4C then Fengyun 3E seems like the most likely payload because of this document from earlier in the year: http://www.unoosa.org/documents/pdf/psa/activities/2019/UNChinaSymSDGs/Presentations/FY_Programs_Applications_short.pdf

It states on the second last page that the Fengyun 3 satellites will have a "Early Morning", "Morning", and "Afternoon" orbit. Fengyun 3A and Fengyun 3B were both R&D satellites as stated by the document while satellites after Fengyun 3C are operational satellites. Fengyun 3C is in the "Morning" orbit while Fengyun 3D is in the "Afternoon" orbit. The launch time of this mission (around 08:00 Chinese time) matches up with to the proposed "Early Morning" orbit. The Document also says that Fengyun 3E is planned to be launched before the end of the year.

I guess we have to wait and see if this is the payload on this mission.  :-X
« Last Edit: 11/22/2019 03:30 am by Josh_from_Canada »
Launches Seen: Atlas V OA-7, Falcon 9 Starlink 6-4, Falcon 9 CRS-28,

Offline Galactic Penguin SST

There are reports that this launch's payload will receive a Ziyuan-XX designation.
Apparently there were previous reports of a 1 meter resolution C-band radar satellite planned for SASTIND, so maybe this is it? The early morning local launch time fits with the polar orbit used by radar satellites.
Astronomy & spaceflight geek penguin. In a relationship w/ Space Shuttle Discovery. Current Priority: Chasing the Chinese Spaceflight Wonder Egg & A Certain Chinese Mars Rover

Offline Liss

  • Full Member
  • ****
  • Posts: 1886
  • Moscow, Russia
  • Liked: 1085
  • Likes Given: 91
Judging from launch time, the planned LTDN is 07:00.
This message reflects my personal opinion based on open sources of information.

Offline russianhalo117

  • Global Moderator
  • Senior Member
  • *****
  • Posts: 8766
  • Liked: 4684
  • Likes Given: 768
Could it be:
2019
?? - CZ-4B - TSLC, LC9 - ZY-3 Ziyuan-3 (3)

Online zubenelgenubi

  • Global Moderator
  • Senior Member
  • *****
  • Posts: 11345
  • Arc to Arcturus, then Spike to Spica
  • Sometimes it feels like Trantor in the time of Hari Seldon
  • Liked: 7543
  • Likes Given: 73582
Could it be:
2019
?? - CZ-4B - TSLC, LC9 - ZY-3 Ziyuan-3 (3)

If so, it's launching to a SSO with a different LTDN--0700 vs. 1030.
Gaofen-7 launched at 03:22 UTC.

Gunter lists Gaofen-7 as a similar, yet improved Ziyuan-3.

The previous 2 ZY-3's were launched to SSO's with a LTDN circa 10:30 am.  Both launched at 03:17 UTC.

(LTDN = local time descending node)

ZY-3 #1 launch thread
ZY-3 #2 launch thread
Support your local planetarium! (COVID-panic and forward: Now more than ever.) My current avatar is saying "i wants to go uppies!" Yes, there are God-given rights. Do you wish to gainsay the Declaration of Independence?

Offline russianhalo117

  • Global Moderator
  • Senior Member
  • *****
  • Posts: 8766
  • Liked: 4684
  • Likes Given: 768
Could it be:
2019
?? - CZ-4B - TSLC, LC9 - ZY-3 Ziyuan-3 (3)

If so, it's launching to a SSO with a different LTDN--0700 vs. 1030.
Gaofen-7 launched at 03:22 UTC.

Gunter lists Gaofen-7 as a similar, yet improved Ziyuan-3.

The previous 2 ZY-3's were launched to SSO's with a LTDN circa 10:30 am.  Both launched at 03:17 UTC.

(LTDN = local time descending node)

ZY-3 #1 launch thread
ZY-3 #2 launch thread
XY-XX would be the first radar sat in the series if all info is indeed correct.

Online zubenelgenubi

  • Global Moderator
  • Senior Member
  • *****
  • Posts: 11345
  • Arc to Arcturus, then Spike to Spica
  • Sometimes it feels like Trantor in the time of Hari Seldon
  • Liked: 7543
  • Likes Given: 73582
Judging from launch time, the planned LTDN is 07:00.

ZY-XX would be the first radar sat in the series if all info is indeed correct.

Function drives form.

A SSO with LTDN of 0700 would be near a dawn/dusk LTDN SSO?

Such an orbit also allows a fixed solar array to be (nearly?) constantly illuminated?  One less drive to fail?

SARsats need substantial electrical power for radar emission, and IIRC there are other SARsats utilizing similar orbits.

QED?
Support your local planetarium! (COVID-panic and forward: Now more than ever.) My current avatar is saying "i wants to go uppies!" Yes, there are God-given rights. Do you wish to gainsay the Declaration of Independence?

Offline tehwkd

Notam removed ~19h before window open
Custodian of NextLaunch & LaunchStuff |   Utilizer of Google

Offline Steven Pietrobon

  • Member
  • Senior Member
  • *****
  • Posts: 39309
  • Adelaide, Australia
    • Steven Pietrobon's Space Archive
  • Liked: 32881
  • Likes Given: 8393
SFF is giving 30 November as the launch date, but that just might be because that's the end of the month. They are also saying the launch is a CZ-4C.

http://www.spaceflightfans.cn/event/china-long-march-4c-rocket-launch-satellite-2?instance_id=2920

9ifly thread is giving 2X November as the launch date.

http://www.9ifly.cn/forum-7-1.html

The control ship is apparently still in the area for a CZ-4C launch.

"Yuan Wang 7 is also in the 4C measurement and control area."
http://www.9ifly.cn/forum.php?mod=redirect&goto=findpost&ptid=92804&pid=695340

"As of tonight, Yuan Wang 7 is still hovering in the sea."
http://www.9ifly.cn/forum.php?mod=redirect&goto=findpost&ptid=92804&pid=695349
« Last Edit: 11/25/2019 09:47 pm by Steven Pietrobon »
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

Offline Steven Pietrobon

  • Member
  • Senior Member
  • *****
  • Posts: 39309
  • Adelaide, Australia
    • Steven Pietrobon's Space Archive
  • Liked: 32881
  • Likes Given: 8393
Yuan Wang 7 is located off the west coast of Australia.
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

Offline Galactic Penguin SST

« Last Edit: 11/25/2019 11:54 pm by Galactic Penguin SST »
Astronomy & spaceflight geek penguin. In a relationship w/ Space Shuttle Discovery. Current Priority: Chasing the Chinese Spaceflight Wonder Egg & A Certain Chinese Mars Rover

Offline Steven Pietrobon

  • Member
  • Senior Member
  • *****
  • Posts: 39309
  • Adelaide, Australia
    • Steven Pietrobon's Space Archive
  • Liked: 32881
  • Likes Given: 8393
Someone else is saying 30 November, but that looks to be replying on the SFF page.

"Put off until the 30th."

http://www.9ifly.cn/forum.php?mod=redirect&goto=findpost&ptid=92804&pid=695393
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

Offline tehwkd

A6027/19 - A TEMPORARY RESTRICTED AREA ESTABLISHED BOUNDED BY: N301025E1093733-N300749E1095600-N293025E1094858-N293301E1093039 BACK TO START.VERTICAL LIMITS:GND-UNL. ALL ACFT SHALL BE FORBIDDEN TO FLY INTO THE RESTRICTED AREA. GND - UNL, 27 NOV 23:45 2019 UNTIL 28 NOV 00:10 2019. CREATED: 26 NOV 10:33 2019
« Last Edit: 11/26/2019 11:14 am by tehwkd »
Custodian of NextLaunch & LaunchStuff |   Utilizer of Google

Online zubenelgenubi

  • Global Moderator
  • Senior Member
  • *****
  • Posts: 11345
  • Arc to Arcturus, then Spike to Spica
  • Sometimes it feels like Trantor in the time of Hari Seldon
  • Liked: 7543
  • Likes Given: 73582
We're now within the NOTAM window.
Support your local planetarium! (COVID-panic and forward: Now more than ever.) My current avatar is saying "i wants to go uppies!" Yes, there are God-given rights. Do you wish to gainsay the Declaration of Independence?

Offline Galactic Penguin SST

Nothing yet so far.
Astronomy & spaceflight geek penguin. In a relationship w/ Space Shuttle Discovery. Current Priority: Chasing the Chinese Spaceflight Wonder Egg & A Certain Chinese Mars Rover

Offline Steven Pietrobon

  • Member
  • Senior Member
  • *****
  • Posts: 39309
  • Adelaide, Australia
    • Steven Pietrobon's Space Archive
  • Liked: 32881
  • Likes Given: 8393
Launch should be happening about now.
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

Offline Steven Pietrobon

  • Member
  • Senior Member
  • *****
  • Posts: 39309
  • Adelaide, Australia
    • Steven Pietrobon's Space Archive
  • Liked: 32881
  • Likes Given: 8393
Its the end of the window. No reports of launch yet on 9ifly.
« Last Edit: 11/27/2019 11:10 pm by Steven Pietrobon »
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

Offline Steven Pietrobon

  • Member
  • Senior Member
  • *****
  • Posts: 39309
  • Adelaide, Australia
    • Steven Pietrobon's Space Archive
  • Liked: 32881
  • Likes Given: 8393
Launch!

http://www.9ifly.cn/forum.php?mod=redirect&goto=findpost&ptid=92804&pid=696032

"Lin Xiaoyi
2 minutes ago from Weibo Video
At about 07:52 BST on November 28, 2019, China carried out a space launch mission at the Taiyuan Satellite Launch Center."
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

Tags: Taiyuan 
 

Advertisement NovaTech
Advertisement Northrop Grumman
Advertisement
Advertisement Margaritaville Beach Resort South Padre Island
Advertisement Brady Kenniston
Advertisement NextSpaceflight
Advertisement Nathan Barker Photography
0