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SixtoReport: D12 Satellite Info in Post#1 - Live!


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#4451 OFFLINE   P Smith

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Posted 31 March 2010 - 08:53 AM

Looking at TLE history on first page, I would say some loosening happen in station-keeping after end of February. Gap increased and other orbit parameters become wider. But before March those numbers was almost perfect.

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#4452 OFFLINE   Mike Bertelson

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Posted 31 March 2010 - 08:57 AM

Looking at TLE history on first page, I would say some loosening happen in station-keeping after end of February. Gap increased and other orbit parameters become wider. But before March those numbers was almost perfect.

Since I don't know a darned thing about IOT, positioning of satellites, and what it takes for movement/station keeping, what exactly can I infer from that?

Mike

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#4453 OFFLINE   LameLefty

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Posted 31 March 2010 - 09:18 AM

Since I don't know a darned thing about IOT, positioning of satellites, and what it takes for movement/station keeping, what exactly can I infer from that?

Mike


Nothing. The "loosening" P Smith referred to could be the result of any one of a dozen things (preparations for orbit-raising in the initial time period prior to the new request for STA for more testing; additional spot-beam testing which must be done by biasing or changing the attitude of the spacecraft which in turn makes station-keeping harder; intentional degradation of station-keeping for testing with marginal spacecraft stability; the decision to relax station-keeping tolerance to save fuel during the extended test period; plus a bunch of possible component failures of the spacecraft, but guessing any of those would be complete speculation and most of the possible failures don't matter in the final analysis anyway.

I'll just stick to what Doug and Stuart have said.

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#4454 OFFLINE   Sixto

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Posted 31 March 2010 - 09:29 AM

STA news on the way ... few minutes ...

"DIRECTV Enterprises, LLC requests an extension of its Special Temporary Authority to drift the DIRECTV 12 satellite from the 76 degree W.L. orbital location to its licensed orbital location. DIRECTV accepts the same terms and conditions applicable under ..."

The database is being updated now ... SAT-STA-20100331-00060
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#4455 OFFLINE   P Smith

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Posted 31 March 2010 - 09:30 AM

Since I don't know a darned thing about IOT, positioning of satellites, and what it takes for movement/station keeping, what exactly can I infer from that?

Mike

IOT would require better holding the satellite in place.

#4456 OFFLINE   LameLefty

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Posted 31 March 2010 - 09:33 AM

IOT would require better holding the satellite in place.


Nope. See my post above.

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#4457 ONLINE   sigma1914

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Posted 31 March 2010 - 09:33 AM

STA news on the way ... few minutes ...

"DIRECTV Enterprises, LLC requests an extension of its Special Temporary Authority to drift the DIRECTV 12 satellite from the 76 degree W.L. orbital location to its licensed orbital location. DIRECTV accepts the same terms and conditions applicable under ..."

The database is being updated now ...


An extension to drift time?
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#4458 OFFLINE   Mike Bertelson

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Posted 31 March 2010 - 09:34 AM

IOT would require better holding the satellite in place.

Ok. Unless you're impling that there's something wrong the it's station keeping ability, I'm still not gettin' it. :confused:

Mike

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#4459 OFFLINE   Sixto

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Posted 31 March 2010 - 09:36 AM

An extension to drift time?

yes, awaiting the details.
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#4460 OFFLINE   texasmoose

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Posted 31 March 2010 - 09:38 AM

"DIRECTV Enterprises, LLC requests an extension of its Special Temporary Authority to drift the DIRECTV 12 satellite from the 76 degree W.L. orbital location to its licensed orbital location.


This doesn't sound good. Is this going to push the projected time table for new HD channels from the end of April to end of May or something even later than that?:(
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#4461 OFFLINE   Sixto

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Posted 31 March 2010 - 09:39 AM

3/31/2010: "DIRECTV Enterprises, LLC requests an extension of its Special Temporary Authority to drift the DIRECTV 12 satellite from the 76 degree W.L. orbital location to its licensed orbital location. DIRECTV accepts the same terms and conditions applicable under the STA currently in force."

FCC database still being updated ...
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#4462 OFFLINE   Sixto

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Posted 31 March 2010 - 09:40 AM

This doesn't sound good. Is this going to push the projected time table for new HD channels from the end of April to end of May or something even later than that?:(

Maybe not.

Awaiting details.

It may just be extension past 4/6, which we expected.
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#4463 OFFLINE   rrrick8

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Posted 31 March 2010 - 09:40 AM

In case no one noticed.
Directv's stock is surging upward today.
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#4464 ONLINE   sigma1914

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Posted 31 March 2010 - 09:41 AM

An extension to drift time?


yes, awaiting the details.


*Waiting for the panic to ensue*
<sarcasm> OMG, now they want another extension. OMG, D12 is in trouble. OMG, we'll never get new HD. OMG, the sky is falling...where's my tinfoil hat? </sarcasm>
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#4465 OFFLINE   cdizzy

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Posted 31 March 2010 - 09:45 AM

It looks to me that the original STA to drift expires on the 6th of April and this extension gives them the extra time to get it done?

Doesn't sound bad to me.

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#4466 OFFLINE   matt

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Posted 31 March 2010 - 09:45 AM

*Waiting for the panic to ensue*
<sarcasm> OMG, now they want another extension. OMG, D12 is in trouble. OMG, we'll never get new HD. OMG, the sky is falling...where's my tinfoil hat? </sarcasm>


Yeah, there must be something wrong with the rocket boosters.

Come on people :sure:
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#4467 OFFLINE   Sixto

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Posted 31 March 2010 - 09:50 AM

In summary ...

D12 FCC Filing (3/31/2010):

"DIRECTV Enterprises, LLC requests an extension of its Special Temporary Authority to drift the DIRECTV 12 satellite from the 76 degree W.L. orbital location to its licensed orbital location. DIRECTV accepts the same terms and conditions applicable under the STA currently in force."

D12: http://licensing.fcc...ment_key=808653

Earth Station E090076: http://licensing.fcc...ment_key=808649

Earth Station E070027: http://licensing.fcc...ment_key=808651


Here's the original STA:

Request: http://licensing.fcc...ment_key=784407

Grant: http://licensing.fcc...ment_key=805050


Edited by Sixto, 31 March 2010 - 11:38 AM.

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#4468 OFFLINE   Crow159

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Posted 31 March 2010 - 09:56 AM

The document doesn't specify the length of the extension. Would it be safe to assume a 30 day extension, just like the testing extension?

EDIT: Nevermind, read the wrong document, yes a 30 day extension.

#4469 OFFLINE   Darkscream

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Posted 31 March 2010 - 09:58 AM

So....

I am assuming from all this that D* does not believe that D12 will be at 103 before May 5 ?

Thus the extension ?

#4470 OFFLINE   nd bronco fan

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Posted 31 March 2010 - 10:04 AM

I take this as a good sign, we all knew the drift was not going to happen in the time that was left........this says it is still going to happen, just a little later.

Could have been worse and they needed to stay parked for additional testing.

#4471 OFFLINE   Jon J

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Posted 31 March 2010 - 10:14 AM

Sounds like they have completed testing but the original STA for drift would expire before it arrives at 103, hence the request for an extension.
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#4472 OFFLINE   Lancelink

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Posted 31 March 2010 - 10:17 AM

....I am assuming from all this that D* does not believe that D12 will be at 103 before May 5 ?


No, not at all. Here's some convoluted optimism for ya....By extending the STA to drift, D* is asking for the authority to start the burners at any time for the 20 day trek to 103. Could be today, could be April15th. If they thought or knew there was a serious problem there would be no need to do this.

Unless there is a massive coverup afoot....

Or...like nd Bronco fan said. :eek2: Sorry man, these dang chimp fingers are slow on a keyboard!

Anyway, thanks Sixto (what, the millionth time?) for the quick, pertinant update. Your work is greatly appreciated here.

Now back to your regular program of watching the TLEs roll in.

Edited by Lancelink, 31 March 2010 - 10:28 AM.


#4473 OFFLINE   lwilli201

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Posted 31 March 2010 - 10:21 AM

Unless there is a massive coverup afoot....


Only the Chimp knows for sure. ;)

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#4474 OFFLINE   Garry

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Posted 31 March 2010 - 10:28 AM

Well they could have released a follow up statement or change the wording in the original PR. Or just change the policy about announcing dates several months in advance. I wonder if they'll even be able to carry ESPN 3D at launch as announced yesterday, what with all of these delays, but that's a whole other thread, just like this discussion, so

:backtotop


It isn't like you don't know that D12 is delayed.

#4475 OFFLINE   woj027

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Posted 31 March 2010 - 10:36 AM

In summary ...

D12 FCC Filing (3/31/2010):

"DIRECTV Enterprises, LLC requests an extension of its Special Temporary Authority to drift the DIRECTV 12 satellite from the 76 degree W.L. orbital location to its licensed orbital location. DIRECTV accepts the same terms and conditions applicable under the STA currently in force."

http://licensing.fcc...ment_key=808653


Have yet to see the actual documentation (if any) behind the request.

Here's the original STA:

Request: http://licensing.fcc...ment_key=784407

Grant: http://licensing.fcc...ment_key=805050



Since the STA for D12 will expire on 4/19/10 and the rocket scientists on this site believe it should take around 20 days to drift to 103 and the original drift is set to expire 30 days after 3/8/10 (4/7/10?) There isn't enough time to drift, so obviously they need more time to drift, and asking now means that they are ready to drift?




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