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

Discussion in 'DIRECTV General Discussion' started by Sixto, Jul 27, 2008.

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  1. Dec 29, 2009 #1661 of 10270
    BEP1030

    BEP1030 New Member

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    Just out of curiosity, are any of the rocket stages reused for another flight?
     
  2. Dec 29, 2009 #1662 of 10270
    P Smith

    P Smith Mr. FixAnything

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    Those six boosters perhaps.
     
  3. Dec 29, 2009 #1663 of 10270
    steveken

    steveken Godfather

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    Anyone have any idea what a good OS X based satellite tracker program is? I used Windows the last time I kept track of DirecTV 10, so I don't know about mac programs.
     
  4. Dec 29, 2009 #1664 of 10270
    raoul5788

    raoul5788 Guest

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    The last I knew, there was no hd version of DIY.
     
  5. Dec 29, 2009 #1665 of 10270
    ncgbrown

    ncgbrown Mentor

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    Kinda rusty on my Orbitron. Should I be seeing that nice figure 8 pattern from D12 right now?
     
  6. Dec 29, 2009 #1666 of 10270
    Tibs

    Tibs AllStar

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    Yeah, I use it on a few boards I manage, I think its called "Chief First Post - Every Page - [Thread Based]" which would let this thread be managed like that.

    Due to the size of the first post it might get too big each page load, you could break some of the older info into post 2 and leave the most current info in Post 1. Then every page load would have first post at top.
     
  7. Dec 29, 2009 #1667 of 10270
    bamaweather

    bamaweather Icon

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  8. Dec 29, 2009 #1668 of 10270
    Sixto

    Sixto Well-Known Member

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    A little tied up this week, but all significant D12 and HD changes/updates will be tweeted. :)
     
  9. Dec 29, 2009 #1669 of 10270
    Coca Cola Kid

    Coca Cola Kid Hall Of Fame

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    ILS's page says the last step is "departure charter". whats that mean and when's it supposed to take place?
     
  10. Dec 29, 2009 #1670 of 10270
    oldfantom

    oldfantom Icon

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    they said the would like to go with ILS. I think this is a first indication of a plan for 14. Well, maybe the filings for the grants were, but this is the first time it was named as far as I know. I still would think you would see an outlay of cash for a build noted in an annual report. Or maybe a press release from Boeing. Does anyone know when the 10-12 builds made the news?
     
  11. Dec 29, 2009 #1671 of 10270
    jefbal99

    jefbal99 Hall Of Fame

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    Followed :)
     
  12. Dec 29, 2009 #1672 of 10270
    Sixto

    Sixto Well-Known Member

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    Update#2:
    Code:
    Name			DIRECTV 12
    NORAD #			36131
    COSPAR designator	2009-075-A  
    Epoch (UTC)		12-29-2009 17:32:06
    Orbit # at Epoch	1
    Inclination		20.577
    RA of A. Node		99.101
    Eccentricity		0.5719834
    Argument of Perigee	359.776
    Revs per day		1.98014835
    Period			12h 07m 13s (727.22 min)
    Semi-major axis		26 788 km
    Perigee x Apogee	5 087 x 35 732 km
    BStar (drag term)	0.000000000 1/ER
    Mean anomaly		65.931
    Propagation model	SDP4
    Element number / age	2 / 0 day(s)
    
    Lon			127.1395° W
    Lat			11.4580° N
    Alt (km)		27 846.400
     
  13. Dec 29, 2009 #1673 of 10270
    jefbal99

    jefbal99 Hall Of Fame

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    Holy crap, they moved it 4500km today and dropped the inclination 25°?

    Damn, are they in a rush? D11 and SW1 were a week to 10 days before that was reached
     
  14. Dec 29, 2009 #1674 of 10270
    Sixto

    Sixto Well-Known Member

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    almost same as D10
     
  15. Dec 29, 2009 #1675 of 10270
    dennisj00

    dennisj00 Hall Of Fame

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    Most likely, the departure of the visiting support crew to go HOME and get WARM!
     
  16. Dec 29, 2009 #1676 of 10270
    LameLefty

    LameLefty I used to be a rocket scientist

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    No, already asked and answered in the thread. There was FCC approval for Directv 13 to go to the 110W slot. Directv changed plans several years ago and surrendered that authorization. The current open authorizations are RB-1 at 99, RB-2 at 103, and RB-4 at 110. Whether those RB-nn authorizations are changed to Directv 14, 15 and 16 is yet to be seen.
     
  17. Dec 29, 2009 #1677 of 10270
    LameLefty

    LameLefty I used to be a rocket scientist

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    Those are not boosters, they are integral parts of the Proton first stage. The central core contains the oxidizer (if I remember correctly) and the outer segments contain the fuel tanks, with a single engine under each one. The stage is dropped and not designed or intended for reuse.
     
  18. Dec 29, 2009 #1678 of 10270
    LameLefty

    LameLefty I used to be a rocket scientist

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    Yes. The orbit is very elliptical and extends very far from earth. At apogee, the velocity is lowest and at perigee it's highest. Given the eccentricity of the orbit (how elliptical it is), the angle of the orbit (inclination) and changing velocity, at times the earth's rotation is faster than the ground speed of the satellite as seen from a fixed point. So what happens is, the satellite moves in an ellipse with a constantly-changing speed and altitude while the earth rotates steadily beneath it, giving us these great, confusing ground tracks. ;)
     
  19. Dec 29, 2009 #1679 of 10270
    LameLefty

    LameLefty I used to be a rocket scientist

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    I use MacDoppler Lite but I actually prefer Orbitron running under WINE. However, I tried to run it this morning and it crashed - something broke when I upgraded to Snow Leopard. I'll probably have to reinstall WINE before I can get Orbitron to run properly.
     
  20. Dec 29, 2009 #1680 of 10270
    jefbal99

    jefbal99 Hall Of Fame

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    True, I only remember D11 as I didn't join DirecTV until after D10 was live and the HD expansion began. I must have looked right past the D10 numbers
     
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