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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 5, 2007 #1761 of 2718
    purtman

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    What does "decreasing inclination and increasing eccentricity" mean? What do the inclination and eccentricity numbers mean? Also, how does that show as the satellite is moving? Thanks, guys!
     
  2. Sep 5, 2007 #1762 of 2718
    timmac

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    Hey Purtman, it is ..a mathematical constant that for a given conic section is the ratio of the distances from any point of the conic section to a focus and the corresponding directrix
     
  3. Sep 5, 2007 #1763 of 2718
    LameLefty

    LameLefty I used to be a rocket scientist

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    Middle...
    I'm not sure yet - if ANOTHER elset (more recent than the one I mistakenly noted) shows another increase in eccentricity, then perhaps we can say yes. Once we see a calculated position anywhere west of 102.6 then we'll know for sure. How long that takes is still just a guess at this point.
     
  4. Sep 5, 2007 #1764 of 2718
    LameLefty

    LameLefty I used to be a rocket scientist

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    Ouch! That was mean. :p

    Okay, Orbital Mechanics for Non-Engineers 101:

    Inclination is the angle between the equator and the plane of the orbit. For GSO comsats like D10, you want this to be zero or as close as humanly possible.

    Eccentricity is a measure of how oblong or non-circular the orbit is. For GSO comsats at their operational position, you want this to be zero as well, or as close as possible. In this case, however, we're all waiting for D10 to begin it's 90-odd mile journey west from its current test slot to its operational slot, so we're waiting for eccentricity to be "non-zero enough" to get measurable westward motion.
     
  5. Sep 5, 2007 #1765 of 2718
    geoliquid

    geoliquid Mentor

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    [​IMG]
     
  6. Sep 5, 2007 #1766 of 2718
    timmac

    timmac AllStar

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    Too Funny
     
  7. Sep 5, 2007 #1767 of 2718
    Steve Robertson

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    That is what I thought it was myself:rolleyes:
     
  8. Sep 5, 2007 #1768 of 2718
    Starchild

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  9. Sep 5, 2007 #1769 of 2718
    Sirshagg

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    DUH!

    Thank you that helps. And here I though they would just hit the gas on something pointed west. Seems it's infinitely more complicated. Good thing we have brainics like you guys here to inform the masses.
     
  10. Sep 5, 2007 #1770 of 2718
    timmac

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    I'm told this site is not that accurate and you are better off getting the updates from here they are more accurate, i'm sure the noggins can give you a better site with better info.:grin:
     
  11. Sep 5, 2007 #1771 of 2718
    LameLefty

    LameLefty I used to be a rocket scientist

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    That's correct. Ignore n2y0 for this kind of stuff - we (people who are regularly posting to DBSTalk) are getting TLEs much faster than n2y0 is getting them, and our software seems to be more accurate than theirs, on top of that. Trust me, it won't take long for people here to spot a new element set and update position information.
     
  12. Sep 5, 2007 #1772 of 2718
    Ken984

    Ken984 Active Member

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    Bossier...
    We know about that site but it isnt updated as often as we like, so a bunch of us "geeks" get out updates directly and put it in our own software so we are more up to the moment than they are.
     
  13. Sep 5, 2007 #1773 of 2718
    F1 Fan

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    Sorry but that is not real time.

    LameLefty and Ken are giving the newest figures that can be publicly viewed and even then they cant get real time.

    Since the launch of D10 we have been relying on these two and others to give us the up to date position. And answering all our questions and giving us Satellite Positioning and Telemetry 101; 102 & 110. (not forgetting 103b :lol: )
     
  14. Sep 5, 2007 #1774 of 2718
    Starchild

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    Thank you. I am as anxious as you all are for the new bird to be up and running. At least you are willing to accept a rookie to the site.
     
  15. Sep 5, 2007 #1775 of 2718
    F1 Fan

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    :welcome_s to the forums
     
  16. Sep 5, 2007 #1776 of 2718
    Ken984

    Ken984 Active Member

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    Bossier...
    Always glad to have new members, welcome and enjoy yourself, great bunch of people here!
     
  17. Sep 5, 2007 #1777 of 2718
    Smthkd

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    Welcome!!! BTW: We PASSED 200k mark! :D Oh well, time to look forward to something else!
     
  18. Sep 5, 2007 #1778 of 2718
    donshan

    donshan Godfather

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    How about looking forward to D10 reaching 102.775 W soon with the first post of it on this thread!:D
     
  19. Sep 5, 2007 #1779 of 2718
    EaglePC

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    Me all CONFUSED

    That's correct. Ignore n2y0 for this kind of stuff.
    Is the Sat moving to home now?
    Is it a private thing we don't know the location its moving (D10 missing in action)
    Do you think DirecTV want's to suprise us ?

    I be amaze if Sept 1st was the moving date and DirecTV could sit on it for 30 days.

    9/5/07 thought we might have a fresher reaction to Sat 103(b) still on the 0's.
     
  20. Sep 5, 2007 #1780 of 2718
    gslater

    gslater Gone to the Dogs

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    Been lurking here keeping an eye out probably like a lot of other people. Any idea when we might be able to expect another elset that will either confirm a move or not since the last one seemed to indicate that the move might be starting but was not difinitive.
     
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