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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 7, 2007 #1861 of 2718
    donshan

    donshan Godfather

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    Jun 18, 2007
    That is what I understand too. NORAD does not update the TLE of every GSO satellite every day in that long list ( about 356 GSOs ) since most do not change much at all. That Spaceway 1 data had many gaps of several days between TLE updates.

    Since you (and several others) do such a good job of watching for new TLEs, I don't feel I need to spend time doing it , so I am just waiting for new TLE posts here.
     
  2. Sep 7, 2007 #1862 of 2718
    oakwcj

    oakwcj Lower Echelon

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    Wait no more:

    DIRECTV 10
    1 31862U 07032A 07250.43441108 -.00000125 00000-0 10000-3 0 759
    2 31862 000.0811 296.0095 0000210 337.8947 126.0388 01.00271797 649

    Name DIRECTV 10
    NORAD # 31862
    COSPAR designator 2007-032-A
    Epoch (UTC) 09-07-2007 10:25:33
    Orbit # at Epoch 64
    Inclination 0.081
    RA of A. Node 296.010
    Eccentricity 0.0000210
    Argument of Perigee 337.895
    Revs per day 1.00271797
    Period 23h 56m 05s (1436.8 min)
    Semi-major axis 42 165 km
    Perigee x Apogee 35 786 x 35 787 km
    BStar (drag term) 0.000100000 1/ER
    Mean anomaly 126.039
    Propagation model SDP4
    Element number / age 75 / 0 day(s)
    StdMag (MaxMag) / RCS N/A
    Diameters N/A
    Satellite group Geostationary

    Eccentricity is up a bit, but apogee isn't.
     
  3. Sep 7, 2007 #1863 of 2718
    wilmot3

    wilmot3 Legend

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    DIRECTV 10
    1 31862U 07032A 07250.43441108 -.00000125 00000-0 10000-3 0 759
    2 31862 000.0811 296.0095 0000210 337.8947 126.0388 01.00271797 649

    Name DIRECTV 10
    NORAD # 31862
    COSPAR designator 2007-032-A
    Epoch (UTC) 2007-09-07 10:25:33
    Orbit # at Epoch 64
    Inclination 0.081
    RA of A. Node 296.010
    Eccentricity 0.0000210
    Argument of Perigee 337.895
    Revs per day 1.00271797
    Period 23h 56m 05s (1436.8 min)
    Semi-major axis 42 165 km
    Perigee x Apogee 35 786 x 35 787 km
    BStar (drag term) 0.000100000 1/ER
    Mean anomaly 126.039
    Propagation model SDP4
    Element number / age 75 / 0 day(s)
    StdMag (MaxMag) / RCS N/A
    Diameters N/A
    Satellite group N/A

    1DIRECTV 10
    Lon 102.5598° W
    Lat 0.0122° S
    Alt (km) 35 786.880
    Azm 216.6°
    Elv 35.2°
    RA 07h 45m 53s
    Decl -6° 19' 09"
    Range (km) 38 164.492
    RRt (km/s) 0.000
    Vel (km/s) 3.075
    Direction Descending
    Eclipse No
    MA (phase) 205.7° (146)
    TA 205.7°
    Orbit # 64
    Mag (illum) ? (16%)
     
  4. Sep 7, 2007 #1864 of 2718
    wilmot3

    wilmot3 Legend

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    Jul 24, 2007
    :lol: oh by 1 min
     
  5. Sep 7, 2007 #1865 of 2718
    syphix

    syphix Hall Of Fame

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    So, still sitting still, pretty much??

    I really thought we would've seen some movement by now...:confused:

    At this rate, Orbitron has it arriving at about 102.7757 at 3:49am Eastern Time on Nov. 8th!! :eek2: ;)
     
  6. Sep 7, 2007 #1866 of 2718
    Interceptor

    Interceptor Legend

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    Jul 19, 2007
    Just a note on something I discovered on Space-Track. I look at that site almost every day for D10 updates. I also retrieve the last five elsets each time I key in the Object ID. After noticing posts a few pages back, asking about archival data on the sats, I realized the search page on Space-Track will allow you to request between certain dates, and it will return all elsets. No need to request archival data be sent to you. I just tested by looking up DirecTV-1 and got elsets all the way back to 1993.:)
     
  7. Sep 7, 2007 #1867 of 2718
    oakwcj

    oakwcj Lower Echelon

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    Sep 28, 2006
    It's more stationary than ever. According to Orbitron, it will be in exactly the same longitude in 24 hours. Since D* requested the STA to begin the move on September 1, something must be holding it up. Too bad we're reduced to reading weak tea leaves.
     
  8. Sep 7, 2007 #1868 of 2718
    syphix

    syphix Hall Of Fame

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    Correct, but it also shows that 48 hours from now it's drifting very, VERY slowly WEST...so at least it's not moving east anymore.
     
  9. Sep 7, 2007 #1869 of 2718
    PWenger

    PWenger Legend

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    Jan 24, 2003
    Might I suggest...do you think the request might have just been E* insurance? They never intended to move it early, but were afraid Charlie might pull an end around and start broadcasting a ton of new channels (I have no idea of their available bandwidth, but I can certainly envision him "stealing" bandwith by decreasing PPV or something to that effect). Then they could use some fuel and start early. Since E* only launched one or two channels, they decided not to use their insurance, and therefore the extra fuel, and just let it sit until their original dates planned?

    Pure speculation on my part, of course...
     
  10. Sep 7, 2007 #1870 of 2718
    Xmaniac

    Xmaniac Mentor

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    Aug 16, 2007
    In a wierd way you have calmed me down. I like most of the people here have been worried why they have not moved D10 but your post got me thinking. I realized that they werent even suppose to start moving till the 12. I just would have been cheese if they would have moved it early.
     
  11. Sep 7, 2007 #1871 of 2718
    LameLefty

    LameLefty I used to be a rocket scientist

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    Middle...
    Nope, not exactly. Inclination is edging ever closer to that hoped-for 0.00000 (which it will never quite make) and eccentricity is up again. The Move may be underway, albeit very slowly.

    Speaking of how NORAD updates TLEs - one thing we have to remember as we await the move is that these elsets are snapshots in time - the instant the vehicle is painted by the tracking radar or picked up by the optical/IR scopes and observed for a short period, the elsets are generated. IF (and I say it's a big "if" but still . . .) the act of observation occurs DURING a long-duration, low-thrust maneuver, the elset isn't quite accurate for "real time" - in other words, "The Move" may be underway and we won't know it until NORAD gets around to publishing the next elset.

    Or perhaps that's just more wishful thinking on my part. :p
     
  12. Sep 7, 2007 #1872 of 2718
    purtman

    purtman Hall Of Fame

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    Are there any truly "must-see" programs that are airing in the next 7-10 days that we won't be able to live without? I didn't think so.

    I'd love to see the HD now, but I realize there's no reason to get angry as some are doing. I also look at my friend, John. A few years ago John came down with cancer, was laid off from his job, and had both parents die within a month of each other all within a four-month span. He didn't get angry. If he doesn't get all bent out of shape after going through that, who am I to get bent out of shape because my HD isn't here earlier than was promised?
     
  13. Sep 7, 2007 #1873 of 2718
    JeffBowser

    JeffBowser blah blah blah

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    Dec 21, 2006
    Good post. Last time I tried to introduce perspective to a thread, I about got railroaded out. I try to keep shut about that now - probably a TV talk forum is not the place to suggest TV is not all that important in the grand scheme of things :lol:

     
  14. Sep 7, 2007 #1874 of 2718
    James Long

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

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    Michiana
    Actually E*'s next channel will be BTN HD next week and six new HD PPV channels soon after. I wouldn't expect E* to reduce PPV for anything. :)

    D* isn't playing games based on E*'s activities.

    Now back to the speculation on it D10 is moving and when. :)
    DON'T FORGET TO KEEP IT TECH IN THIS THREAD!
     
  15. Sep 7, 2007 #1875 of 2718
    oakwcj

    oakwcj Lower Echelon

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    I haven't detected any anger in this thread. We're just obsessively curious. It's hard for me to believe that the people who scribble in this thread even watch much TV.
     
  16. Sep 7, 2007 #1876 of 2718
    smiddy

    smiddy Tain't ogre til its ogre

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    Out of curiosity, how much movement is a big deal in terms of satellites?
     
  17. Sep 7, 2007 #1877 of 2718
    purtman

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    It may not be as common as this one, but in general, all of the threads relating to D10, the HD launch, etc. have had some pretty spiteful comments -- one calling a person stupid, one saying somebody needed a b**ch slap, another saying D* lied because it didn't provide the History Channel first and should not have had D*'s press release (it was actually A&E's) on its site if E* was going to have it first, etc. It's become ridiculous.
     
  18. Sep 7, 2007 #1878 of 2718
    dcben

    dcben AllStar

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    Aug 3, 2007
    Just thinking:confused:

    Isn't the element for rev/day critical here. Its been slowly declining over the last few TLE's (and that's good). Isn't perfect GS characterized by the element= 1.000000? If its greater the sat will pass the same point in the orbit before the day is over (hence move a little EAST relative to the earth). To move WEST to 102.775 we need to dip below 1 for a few days, no?

    Ben
     
  19. Sep 7, 2007 #1879 of 2718
    LameLefty

    LameLefty I used to be a rocket scientist

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    Middle...
    That's a good observation - period and eccentricity (in the case of a nominally-GSO satellite) are very closely related. What I believe Boeing is doing is increasing the eccentricity by tweaking the apogee or perigee very specifically (which changes both the period - revs/day - and eccentricity) so that they can make later burns with more precision. If you have a 3-D orbital tracking program, you can play with numbers yourself by editing an elset and see what changing one or more parameters does).

    Okay, one more final thought - what is a "day"? This isn't a rhetorical question, right? It's not EXACTLY 24 hours. So as a point of comparison, here are the last five elsets for D10, Spaceway 1 and 2:

    Code:
    SPACEWAY 1
    1 28644U 05015A   07248.27172321 -.00000119  00000-0  10000-3 0  4172
    2 28644 000.0173 315.0735 0000064 044.4522 339.4027 01.00271935  8725
    1 28644U 05015A   07245.34011889 -.00000109  00000-0  10000-3 0  4166
    2 28644 000.0193 293.3504 0000100 058.8834 008.4233 01.00271378  8706
    1 28644U 05015A   07241.41038069 -.00000106  00000-0  10000-3 0  4155
    2 28644 000.0190 299.1785 0000139 053.0861 029.8221 01.00271894  8669
    1 28644U 05015A   07239.55807591 -.00000106  00000-0  00000+0 0  4123
    2 28644 000.0366 296.2505 0000127 108.5857 028.5896 01.00271232  8659
    1 28644U 05015A   07239.15273863 -.00000105  00000-0  10000-3 0  4144
    2 28644 000.0375 296.2559 0000127 108.5732 242.2723 01.00271329  8640
    SPACEWAY 2
    1 28903U 05046B   07249.44183793 -.00000145  00000-0  10000-3 0  3425
    2 28903 000.0147 354.0003 0000253 073.9451 337.0489 01.00270986  6722
    1 28903U 05046B   07248.39044384 -.00000142  00000-0  10000-3 0  3416
    2 28903 000.0183 317.8165 0000072 127.9673 299.6724 01.00271044  6713
    1 28903U 05046B   07247.39854911 -.00000139  00000-0  10000-3 0  3405
    2 28903 000.0164 344.7984 0000207 087.4625 315.1387 01.00271110  6709
    1 28903U 05046B   07246.45605063 -.00000136  00000-0  10000-3 0  3398
    2 28903 000.0155 338.9888 0000201 093.6415 334.5425 01.00271176  6695
    1 28903U 05046B   07245.49894938 -.00000133  00000-0  10000-3 0  3388
    2 28903 000.0104 314.1707 0000186 123.5079 343.9968 01.00271263  6688
    DIRECTV 10
    1 31862U 07032A   07250.43441108 -.00000125  00000-0  10000-3 0   759
    2 31862 000.0811 296.0095 0000210 337.8947 126.0388 01.00271797   649
    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
    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
    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
    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
    
     
  20. Sep 7, 2007 #1880 of 2718
    BrettStah

    BrettStah Legend

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    Guys... this isn't rocket science.






    (Sorry if someone's already posted this cheesy attempt at humor :))
     
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