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D10 Satellite TECH THREAD - HD Testing Schedule / Press Releases / Location

Discussion in 'DIRECTV General Discussion' started by Sixto, Jul 6, 2007.

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  1. Sep 6, 2007 #1801 of 2718
    Interceptor

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    I think that's exactly what we're seeing. The eccentricity is spooling up, which is ever so slowly adjusting the altitude. Lefty or Ken, correct me if I'm wrong here, but shouldn't the eccentricity be the first thing that indicates the move is about to take place? It has been steadily increasing over the last four keps.

    Mike
     
  2. Sep 6, 2007 #1802 of 2718
    LameLefty

    LameLefty I used to be a rocket scientist

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    Well, the oldest of the sets I posted above is about 9 or 10 days old now and using today's date, Spaceway 1 would've been at about 102.84W. Current data puts it around 102.875 or so. I don't have anything earlier.
     
  3. Sep 6, 2007 #1803 of 2718
    Tigerman73

    Tigerman73 AllStar

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    We're probably looking at this weekend or early next week before it starts to move. If you believe in the D* activates channels on Wednesday theory, it would need to start moving by Saturday if they are going to take 3 days to slide it over. If it is going to be next weekend before its active we're looking at Monday or Tuesday before it will begin to drift.
     
  4. Sep 6, 2007 #1804 of 2718
    bakers12

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  5. Sep 6, 2007 #1805 of 2718
    macmantis

    macmantis AllStar

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    I just noticed on my new space-track account that a second TLE showed up for yesterday.

    I also noticed if you do a seach for 31862 and not use favorites they return in time order, where favorites seems to always give them in the order they entered the database.

    MacMantis
     
  6. Sep 6, 2007 #1806 of 2718
    Ken984

    Ken984 Active Member

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    Bossier...
    I just checked SpaceTrack, they are now listing a 2nd tle from yesterday that was not there earlier, it shows the exact same eccentricity although inclination is gradually getting lower. I believe the next thing we should see is some kind of verification from Bschnieder that D* has uplinked some channels, hopefully that can happen later today or tomorrow at the latest.

    Code:
    1 31862U 07032A   07249.11580049 -.00000123  00000-0  10000-3 0   747
    2 31862 000.0843 295.5822 0000190 340.5452 007.8154 01.00271828   625
    DIRECTV 10
    1 31862U 07032A   07248.34561698 -.00000121 +00000-0 +10000-3 0 00748
    2 31862 000.0860 295.5926 0000190 340.5235 089.8012 01.00271851000627
    DIRECTV 10
    1 31862U 07032A   07248.08597704 -.00000120  00000-0  10000-3 0   734
    2 31862 000.0876 295.0934 0000180 348.2291 348.8674 01.00271810   610
    DIRECTV 10
    1 31862U 07032A   07247.36458622 -.00000117 +00000-0 +10000-3 0 00735
    2 31862 000.0891 294.9301 0000152 341.8390 095.0093 01.00271863000615
    DIRECTV 10
    1 31862U 07032A   07246.55146617 -.00000115  00000-0  10000-3 0   720
    2 31862 000.0914 294.4695 0000144 344.0876 159.6959 01.00271871   603
     
  7. Sep 6, 2007 #1807 of 2718
    LameLefty

    LameLefty I used to be a rocket scientist

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    Thanks guys - I just got back inside (I keep a beater guitar at work and take it outside to play for awhile during lunch) and saw that as well.

    I think Ken may be right inasmuch as the only significant change from the "new" older TLE set is that the inclination has come down. I hope that the next change increases eccentricity further and raises the apogee so "The Move" (with apologies to Seinfeld fans everywhere!) can begin.
     
  8. Sep 6, 2007 #1808 of 2718
    James Long

    James Long Ready for Uplink! Staff Member Super Moderator DBSTalk Club

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    Remember this is the TECH THREAD ...
    (Too many posts moved --- next time it is the bit bucket.)

    :backtotop
     
  9. Sep 6, 2007 #1809 of 2718
    JohnH

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    Tech thread. Any signal sightings?
     
  10. Sep 6, 2007 #1810 of 2718
    flyingtigerfan

    flyingtigerfan Godfather

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    No signal sightings. But then again, the landscaping guy (new house, new grass) whacked the dish yesterday so I may not be the best source.

    Coming here every day and following this stuff is like waiting for water to boil. You know it'll get there, but only if you go do something else. :)
     
  11. Sep 6, 2007 #1811 of 2718
    donshan

    donshan Godfather

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    Thanks for the post. I promptly got the data set too after my request, but your posting it will let the experts here also look at the "drift" in Spaceway 1 and see if it is detectable in in the TLE data. A quick look at this data set with my limited beginner view is that TLE changes were very small with a couple of interesting dates for the inclination values. However I would guess D10 inclination changes will be small too. Also the inclination of D10 is higher than SW1.

    And please correct any of my mistakes here.:) I am posting this only to learn more. I believe that one learns best by doing "homework" by doing the math yourself, and then let "teacher" correct it.

    I note that for Spaceway 1 there is a small increase in the inclination values on JD 202(July 21) and on JD 233(Aug 21) and JD 239(Aug 27) and then they go back down. I have not had time yet to see if the Longitude positions changes at those times. and my software does not give as much info as others here.

    There is a Julian date calendar on line to help convert those day numbers in the TLE to real dates at:

    http://modland.nascom.nasa.gov/browse/calendar.html

    There is an example of the date calculations in the TLE on the NASA page:

    http://spaceflight.nasa.gov/realdata/sightings/SSapplications/Post/JavaSSOP/SSOP_Help/tle_def.html
     
  12. Sep 6, 2007 #1812 of 2718
    pattcap

    pattcap AllStar

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    Great info here, but I have a question.
    Getting D10 to its final position is an important part of the process. My question is, does it have to be in its exact spot for everything to work?
    Could D* successfully turn channels on before it reaches its final location?
    Is that final fractional degree that important when the dish is ##,#### miles away?

    Thanks
     
  13. Sep 6, 2007 #1813 of 2718
    F1 Fan

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    only to the FCC
     
  14. Sep 6, 2007 #1814 of 2718
    bakers12

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    The FCC license does not allow them to be operational until they are parked. That is, within 0.05 degrees the assigned slot.
     
  15. Sep 6, 2007 #1815 of 2718
    Smthkd

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    I emailed Mr. Mercer to see if Directv10 is in it final position and here is his answer:

    It is. Still testing it but that should be completed soon.

    Robert Mercer
    Director, Public Relations
    DIRECTV, Inc.

    (310) 726-4683


    ________________________________________
    From: xxxxxxxxxxxxxxxxxx[mailto:xxxxxxxx@bellsouth.net]
    Sent: Thursday, September 06, 2007 11:51 AM
    To: Mercer, Robert G
    Subject: Directv10
    Good Evening Mr. Mercer


    I’m Sorry to bother you know that you have other important matters to consider. But, I have a question and its been wrecking my and others mind on various DirecTV forums. Is Directv10 your MPEG4 satellite resting in its final geo. orbit? Believe it or not, that’s it! No more questions! Your answer will be greatly appreciated! Thanks

    Cxxxxxxxx Sxxxxx
    DirecTV sub and fan of course!!!
     
  16. Sep 6, 2007 #1816 of 2718
    syphix

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    No offense, but Mr. Mercer might be a little confused...unless NORAD has been giving us false numbers. The last TLE had it still at about 102.55, and not moving west, moving EAST. DirecTV themselves have said the actual move (which, as of the last TLE, had not been confirmed to begin yet) would take 2-3 days.

    I'll trust TLE's and transponder readings before I trust someone from D*, unless they're a TECHNICIAN. ;)
     
  17. Sep 6, 2007 #1817 of 2718
    JLucPicard

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    I doubt it was Mercer responding anyway. Probably just another CSR! :)
     
  18. Sep 6, 2007 #1818 of 2718
    John4924

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    May be semantics, here. But could you say that the bird is in the final geo orbit [correct altitude, sync'd with earth rotation] and just NOT in the final position within that orbit? Any comments? :confused:
     
  19. Sep 6, 2007 #1819 of 2718
    Ken984

    Ken984 Active Member

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    Bossier...
    Yes the altitude is right, and its in its assigned testing spot, only about 100 miles left to go. But those are important miles!!
     
  20. Sep 6, 2007 #1820 of 2718
    John4924

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    I was commenting on Mr. Mercer saying that it is in final geo. Just trying to make sense of what he said.

    And, by the way, GO SAINTS!!!:D
     
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