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Sixto Report-D11 Status: In Operation July 31, 2008

Discussion in 'DIRECTV General Discussion' started by Earl Bonovich, Mar 19, 2008.

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  1. Steve Robertson

    Steve Robertson Hall Of Fame

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    Dolly,

    Great to see you again. Are we only going to see you when new birds go up? I think you are a closet rocket scientist
     
  2. Dolly

    Dolly Hall Of Fame

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    :lol: No I'm back for good :) I was reading the thread and not understanding it until it seems there might be a problem. For some reason I'm able to pick up on a possible problem without understanding anything else :rolleyes:
     
  3. gslater

    gslater Gone to the Dogs

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    At this point the only problem is that we aren't on the "inside" and don't know what is going on. And it's nice to hear from you again :)
     
  4. curt8403

    curt8403 Hall Of Fame

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    I just knew that it was a mistake for the launch crew to listen to Alan Parson's Project Gemini during launch.
    (Look up the lyrics)
    :D
     
  5. Steve Robertson

    Steve Robertson Hall Of Fame

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    You and I have a lot in common as I am the same way ;)
     
  6. curt8403

    curt8403 Hall Of Fame

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    ok. lets try again..

    Lyrics (Partial)
    Watching waiting rising falling
    Listening calling Drifting (describes activity of the last few months)
    and then
    Hoping sending leaving It's Parked, P Smith has a signal, Where is it going??!
     
  7. P Smith

    P Smith Mr. FixAnything

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    W.Mdtrn Sea
    Nope, last days I saw nothing. Quiet June.
     
  8. curt8403

    curt8403 Hall Of Fame

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    right you had a signal about 4 days ago or a bit more, then it started drifting away
     
  9. P Smith

    P Smith Mr. FixAnything

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    That's my second thoughts when I saw posts about the drift out of STA point.
     
  10. curt8403

    curt8403 Hall Of Fame

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    maybe they are drifting it out of slot deliberately to see if the onboard computer system can return it to the correct slot unaided?
     
  11. P Smith

    P Smith Mr. FixAnything

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    W.Mdtrn Sea
    unlikely, FCC will punish DTV pretty hard for that, if nothing uncontrollable happened
     
  12. Sixto

    Sixto Well-Known Member

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    Nov 18, 2005
    really find it hard to understand why D11 left geostationary.

    could easily have drifted from 99.4 to 99.2.

    I need to go back and look at D10.
     
  13. curt8403

    curt8403 Hall Of Fame

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    ya, I know, it makes me want to :crying_sa
     
  14. curt8403

    curt8403 Hall Of Fame

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    horrid thought, what if we are looking for a filing from directv, and the sat is still under the nominal control of boeing, and they are the ones that filed.
     
  15. Sixto

    Sixto Well-Known Member

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    Nov 18, 2005
    Well, maybe nothing to worry about at all ...

    Just looked at D10. 9/12/2007 was when we started seeing a signal.

    D10 did a similar change to perigee/apogee.

    D10's test location was 102.6º, final location was 102.775º
    Code:
    09-07-2007 10:25:33   35,786 x 35,787 km   102.5570° W
    09-08-2007 11:06:39   35 785 x 35 788 km   102.5569° W
    09-12-2007 08:58:31   35 791 x 35 799 km   102.7703° W
    09-13-2007 10:25:57   35 766 x 35 817 km   102.8026° W
    09-16-2007 09:10:05   35 783 x 35 790 km   102.7790° W
    09-19-2007 05:57:39   35 786 x 35 789 km   102.7810° W
    09-22-2007 08:38:45   35 781 x 35 792 km   102.7723° W
    09-27-2007 09:21:33   35 782 x 35 791 km   102.7705° W
    
     
  16. lance30276

    lance30276 AllStar

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    newbie question. if the altitude is higher than geostationary orbit, then is the sat drifting west? lower than, drifting east? I've been watching that tracking site and the altitude is decreasing. does that mean it's slowing it's western drift? I might be mistaken but was it increasing its altitude earlier?
    or....... does it mean it is simply increasing and decreasing due to it's not in a "perfect" orbit?
     
  17. DodgerKing

    DodgerKing Hall Of Fame

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    Higher altitude at the same orbital speed translates to a slower rotation because it has a larger circumference it must cover, thus a westward drift.
     
  18. Sixto

    Sixto Well-Known Member

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    Well, with D11 on the move, it's time to update the TLE history again, so we can track what's going on.

    I had stopped the TLE updates on 5/28/2008 when we got to 99.4 geostationary.

    Here's everything since 5/28.

    It's easy to see the change in the last two days ... test location was 99.4°, final location is scheduled for 99.2°.
    Code:
    TLE#102(06-12-2008 09:52:32) 35 796 x 35 839 km (100.5922°)
    TLE#101(06-12-2008 08:27:28) 35 800 x 35 858 km (100.5863°)
    TLE#100(06-11-2008 14:29:40) 35 801 x 35 858 km (100.0831°)
    TLE#99 (06-09-2008 09:30:24) 35 787 x 35 788 km ( 99.4886°)
    TLE#98 (06-07-2008 16:01:47) 35 786 x 35 789 km ( 99.4716°)
    TLE#97 (06-07-2008 02:57:49) 35 786 x 35 789 km ( 99.4723°)
    TLE#96 (06-06-2008 19:53:36) 35 786 x 35 789 km ( 99.4658°)
    TLE#95 (06-06-2008 08:10:36) 35 787 x 35 788 km ( 99.4650°)
    TLE#94 (06-04-2008 10:56:07) 35 787 x 35 788 km ( 99.4547°)
    TLE#93 (06-02-2008 09:46:47) 35 786 x 35 788 km ( 99.4428°)
    TLE#92 (06-02-2008 17:23:25) 35 787 x 35 787 km ( 99.4462°)
    TLE#91 (06-01-2008 09:21:55) 35 786 x 35 788 km ( 99.4373°)
    TLE#90 (05-31-2008 08:32:28) 35 786 x 35 788 km ( 99.4324°)
    TLE#89 (05-30-2008 10:59:25) 35 786 x 35 788 km ( 99.4269°)
    TLE#88 (05-29-2008 10:43:26) 35 786 x 35 788 km ( 99.4212°)
    TLE#87 (05-28-2008 09:42:18) 35,786 x 35,788 km (+23.3 hours, at 69.7 days, +  1km)
    TLE#86 (05-27-2008 10:23:29) 35,785 x 35,789 km (+45.8 hours, at 68.7 days, -  1km)
    TLE#85 (05-25-2008 12:37:10) 35,786 x 35,792 km (+27.0 hours, at 66.8 days, + 39km)
    TLE#84 (05-24-2008 09:39:35) 35,747 x 35,804 km (+20.0 hours, at 65.7 days, +  8km)
    TLE#83 (05-23-2008 13:38:44) 35,739 x 35,884 km (+ 1.6 hours, at 64.8 days, -  9km)
    
    [URL="http://www.dbstalk.com/showthread.php?p=1508286#post1508286"]Post #2[/URL] has the complete history, pictorial view, and D10/Spaceway 1/D11 comparison.
     
  19. rotomike

    rotomike Legend

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    That worries me a little. Not nominal. 1 degree off is not good.

    Mike
     
  20. Dolly

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    To those of you who really understand what is going on just let me know when I should panic. I don't want to waste a perfectly good panic for no good reason :D BTW where is Lefty?
     
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