Author Topic: Kwangmyongsong-4 - Unha-? - February 7, 2016 (00:30 UTC)  (Read 110571 times)

Offline Thomas Dorman

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Re: Re: North Korean launch schedule
« Reply #40 on: 02/07/2016 01:03 AM »
Does any one know the name of the North Korean satellite as it would be listed under in Space-track if a satellite has been launched to orbit?

Offline Phillip Clark

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Re: Re: North Korean launch schedule
« Reply #41 on: 02/07/2016 01:05 AM »
The next catalogue number available is 41330 and the international designator if the satellite reaches orbit will be 2016-008A.
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Offline Thomas Dorman

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Re: Re: North Korean launch schedule
« Reply #42 on: 02/07/2016 01:07 AM »
Phillip
Thank you for the quick reply.

Offline Targeteer

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Re: Re: North Korean launch schedule
« Reply #43 on: 02/07/2016 01:08 AM »
https://www.stratcom.mil/news/2016/596/USSTRATCOM_Detects_Tracks_North_Korean_Missile_Launch_into_Space/

OFFUTT AIR FORCE BASE, Neb. U.S. Strategic Command systems detected and tracked what we assess was a North Korean missile launch into space at 6:29 p.m. CST.

The missile was tracked on a southerly launch over the Yellow Sea.

NORAD determined that at no time was the missile a threat to North America.  The men and women of USSTRATCOM, NORAD AND USNORTHCOM, AND USPACOM remain vigilant in the face of North Korean provocations and are fully committed to working closely with our Republic of Korea and Japanese allies to maintain security.
Best quote heard during an inspection, "I was unaware that I was the only one who was aware."

Offline russianhalo117

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Re: Kwangmyongsong-4 (?) - Unha-? - February 7-14, 2016
« Reply #44 on: 02/07/2016 01:12 AM »
Someone post ELSET info when available.

Offline Phillip Clark

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Re: Kwangmyongsong-4 (?) - Unha-? - February 7-14, 2016
« Reply #45 on: 02/07/2016 01:14 AM »
Someone post ELSET info when available.

Optimistically I have Space-Track open but realistically the first data are probably a few hours away.
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Offline russianhalo117

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Re: Kwangmyongsong-4 (?) - Unha-? - February 7-14, 2016
« Reply #46 on: 02/07/2016 01:16 AM »
Someone post ELSET info when available.

Optimistically I have Space-Track open but realistically the first data are probably a few hours away.
USSTRATCOM reportedly has assigned this launch an orbital number so its now the waiting game.
« Last Edit: 02/07/2016 01:17 AM by russianhalo117 »

Offline Thomas Dorman

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Re: Re: North Korean launch schedule
« Reply #47 on: 02/07/2016 01:17 AM »
For those who may be interested I did get a video of the current North Korean KMS 3-2 satellite SPC# 39026 On January 29 2016.  The video is in a inverted or negative view to better show the satellite. When slowed down the video we believe shows the KMS 3-2 in a violent tumble of less than a second.

Offline Phillip Clark

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Re: Kwangmyongsong-4 (?) - Unha-? - February 7-14, 2016
« Reply #48 on: 02/07/2016 01:17 AM »
The first object SHOULD be 2016-016A/41330.
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Offline wesley

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Re: Kwangmyongsong-4 (?) - Unha-? - February 7-14, 2016
« Reply #49 on: 02/07/2016 01:19 AM »
Some reports from Republic of Korea (South Korea) Army:

- The first stage was broken up into about 270 pieces and fell into the ocean near Jeju Island (a large island southwest of the Korean Peninsula)

- The missile/rocket was "lost" at 386km altitude, 790km south of the Dongchang-ri launch site and this is near where the fairing separation occurred

North Korea is going to hold "Important Announcement" at noon, Pyongyang time (03:30 UTC), highly likely to be related to the launch.

Offline russianhalo117

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Re: Kwangmyongsong-4 (?) - Unha-? - February 7-14, 2016
« Reply #50 on: 02/07/2016 01:23 AM »
Some reports from Republic of Korea (South Korea) Army:

- The first stage was broken up into about 270 pieces and fell into the ocean near Jeju Island (a large island southwest of the Korean Peninsula)

- The missile/rocket was "lost" at 386km altitude, 790km south of the Dongchang-ri launch site and this is near where the fairing separation occurred

North Korea is going to hold "Important Announcement" at noon, Pyongyang time (03:30 UTC), highly likely to be related to the launch.
South Korean info is not reliable to confirm or deny. 386 mile point is where there tracking systems intersect the horizon NOT failure of the Rocket.
USSTRATCOM data is required to confirm success or failure.

Offline wesley

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Re: Kwangmyongsong-4 (?) - Unha-? - February 7-14, 2016
« Reply #51 on: 02/07/2016 01:41 AM »
Some reports from Republic of Korea (South Korea) Army:

- The first stage was broken up into about 270 pieces and fell into the ocean near Jeju Island (a large island southwest of the Korean Peninsula)

- The missile/rocket was "lost" at 386km altitude, 790km south of the Dongchang-ri launch site and this is near where the fairing separation occurred

North Korea is going to hold "Important Announcement" at noon, Pyongyang time (03:30 UTC), highly likely to be related to the launch.
South Korean info is not reliable to confirm or deny. 386 mile point is where there tracking systems intersect the horizon NOT failure of the Rocket.
USSTRATCOM data is required to confirm success or failure.
The report mentioned the stats in km, not miles, but yes, it might as well be that the tracking was lost, not the launch vehicle itself. This is why I put the word in quotes.

The South Korean Ministry of Defence has just announced that it is working with the US to assess how successful this launch was. So we're still waiting.

Meanwhile, it's interesting that Yonhap News is trying to float the idea that the launch "might have been a failure" with the reports of the debris falling. But if your rocket stage wasn't made by SpaceX, it's gonna tumble and break up once it's done its job...

Offline wesley

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Re: Kwangmyongsong-4 (?) - Unha-? - February 7-14, 2016
« Reply #52 on: 02/07/2016 02:09 AM »
Hah! Yonhap News now reports that the South Korean army has announced that the payload the North Korean launcher carried has apparently been put into orbit successfully. Whether it is properly operating is still not confirmed.

Offline jcm

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Re: Kwangmyongsong-4 (?) - Unha-? - February 7-14, 2016
« Reply #53 on: 02/07/2016 02:15 AM »
Here is my attempt at a made-up TLE set assuming the orbit is identical to the 2012 satellite.
NO WARRANTY!! ;-)

1 41330U 16008A   16038.02639000 0.00000000 +00000-0 +00000-0 0    14
2 41330U 97.4057  86.1759 0066121 176.7410 337.9669 15.08640274     2

Repeat:  this is a GUESS and NOT a real TLE set, and NOT based on any data except the launch time.
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Offline Chris Bergin

Re: Kwangmyongsong-4 (?) - Unha-? - February 7-14, 2016
« Reply #54 on: 02/07/2016 02:16 AM »
How long do we expect to wait for hard USSTRATCOM data?

Offline Steven Pietrobon

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Re: Kwangmyongsong-4 (?) - Unha-? - February 7-14, 2016
« Reply #55 on: 02/07/2016 02:18 AM »
Here's a link to the article.

http://english.yonhapnews.co.kr/news/2016/02/07/0200000000AEN20160207000953315.html

Seems like the first stage was deliberately exploded to prevent it being recovered.

"After the launch on the west coast, the rocket flew southward, dropping its first stage into the Yellow Sea off the Korean Peninsula at 9:32 a.m. The first stage exploded in midair and splashed down in some 270 pieces, according to the JCS."
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

Offline russianhalo117

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Re: Kwangmyongsong-4 - Unha-? - February 7, 2016
« Reply #56 on: 02/07/2016 02:21 AM »
How long do we expect to wait for hard USSTRATCOM data?
Philip said a few hours required to confirm it is indeed in orbit.
Elsewhere 2-3 orbits minimum are needed to get a good determination of the orbit.
« Last Edit: 02/07/2016 02:28 AM by russianhalo117 »

Offline Steven Pietrobon

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Re: Kwangmyongsong-4 - Unha-? - February 7, 2016
« Reply #57 on: 02/07/2016 02:22 AM »
Yah, we have a picture of the launch!

https://www.rt.com/news/331613-north-korea-rocket-launch/

And a video!

« Last Edit: 02/07/2016 02:24 AM by Steven Pietrobon »
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

Offline jcm

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Re: Kwangmyongsong-4 - Unha-? - February 7, 2016
« Reply #58 on: 02/07/2016 02:26 AM »
Here's a link to the article.

http://english.yonhapnews.co.kr/news/2016/02/07/0200000000AEN20160207000953315.html

Seems like the first stage was deliberately exploded to prevent it being recovered.

"After the launch on the west coast, the rocket flew southward, dropping its first stage into the Yellow Sea off the Korean Peninsula at 9:32 a.m. The first stage exploded in midair and splashed down in some 270 pieces, according to the JCS."

Not necessarily deliberate. Could be destroyed by stage 2 plume as happened with a couple of Titan II Gemini stage 1's if I recall correctly.
Or about 10 other possiblities...
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Offline Steven Pietrobon

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Re: Kwangmyongsong-4 - Unha-? - February 7, 2016
« Reply #59 on: 02/07/2016 02:37 AM »
Article from the North Korean news agency KCNA. Orbit is 494.6 x 500 km, inclined 97.4 degrees.

http://www.kcna.kp/kcna.user.article.retrieveNewsViewInfoList.kcmsf;jsessionid=A289E7FC58C706492ECAABEB522414FA

Pyongyang, February 7 (KCNA) -- The DPRK National Aerospace Development Administration on Sunday issued a report on the successful launch of earth observation satellite Kwangmyongsong-4.
    The report said:
    Scientists and technicians of the DPRK National Aerospace Development Administration succeeded in putting the newly developed earth observation satellite Kwangmyongsong-4 into its orbit according to the 2016 plan of the 5-year program for national aerospace development.
    Carrier rocket Kwangmyongsong blasted off from the Sohae Space Center in Cholsan County, North Phyongan Province at 09:00 on February 7, Juche 105(2016). The satellite entered its preset orbit at 09:09:46, 9 minutes and 46 seconds after the lift-off.
    The satellite is going round the polar orbit at 494.6 km perigee altitude and 500 km apogee altitude at the angle of inclination of 97.4 degrees. Its cycle is 94 minutes and 24 seconds.
    Installed in Kwangmyongsong-4 are measuring apparatuses and telecommunications apparatuses needed for observing the earth.
    The complete success made in the Kwangmyongsong-4 lift-off is the proud fruition of the great Workers' Party of Korea's policy on attaching importance to science and technology and an epochal event in developing the country's science, technology, economy and defense capability by legitimately exercising the right to use space for independent and peaceful purposes.
    The fascinating vapor of Juche satellite trailing in the clear and blue sky in spring of February on the threshold of the Day of the Shining Star, the greatest national holiday of Kim Il Sung's Korea, is a gift of most intense loyalty presented by our space scientists and technicians to the great Comrade Kim Jong Un, our dignified party, state and people.
    The National Aerospace Development Administration of the DPRK will in the future, too, launch more satellites of Juche into the space, true to the great Workers' Party of Korea's policy of attaching importance to science and technology. -0-
« Last Edit: 02/07/2016 02:42 AM by Steven Pietrobon »
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

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