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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. Apr 28, 2010 #7481 of 10270
    loudo

    loudo Well-Known Member

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    Should D12 be entered in the Kentucky Derby, Saturday? :D
     
  2. Apr 28, 2010 #7482 of 10270
    LameLefty

    LameLefty I used to be a rocket scientist

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    Not necessarily. You can have a supersynchronous orbit no matter what the perigee is, if the apogee is high enough.
     
  3. Apr 28, 2010 #7483 of 10270
    James Long

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

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    Plug the data into Orbitron and that is the prediction.
    The current TLE also places E14 at 119 on October 18th.

    Neither move would be recommended due to other satellites in the belt.
    (Unless of course everyone else moved out of the way. :D )

    If perigee is lower than the Clark belt wouldn't one run the risk of collision the next time the path passes through the belt?
    (Unless the only "pass through" predicted will be when it nears the destination.)
     
  4. Apr 28, 2010 #7484 of 10270
    flyingtigerfan

    flyingtigerfan Godfather

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    Your next question will be, "does supersynchronous mean that it's a really really synchronous orbit?"

    And your answer should be, "Yes. Yes, it does."
     
  5. Apr 28, 2010 #7485 of 10270
    Sixto

    Sixto Well-Known Member

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    True, but it depends.

    May be small gap, with raised apogee and perigee.

    We'll see what path they take, and how quick.
     
  6. Apr 28, 2010 #7486 of 10270
    LameLefty

    LameLefty I used to be a rocket scientist

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    :lol:

    How 'bout, "You can have an orbit with a period greater than 'one day' without raising the perigee, if your apogee is high enough."
     
  7. Apr 28, 2010 #7487 of 10270
    Sixto

    Sixto Well-Known Member

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    The guesstimate Drift TLE from a month ago had perigee/apogee at 35,885/35896 for a 20 day Drift.
     
  8. Apr 28, 2010 #7488 of 10270
    LameLefty

    LameLefty I used to be a rocket scientist

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    Maybe. It depends to a very great deal on the exact orbital parameters: how much the apogee was raised, what the resulting orbital period is, and how fast the drift rate is.

    That said, I was just picking nits with P Smith (since he seems so fond of them himself ;) ). The way I expect Boeing's satellite controllers to make the drift is to raise both elements of the orbit by a measurable amount. If not, however (*), I won't be totally surprised.

    (*) These people have access to high-end (and sometimes proprietary) tools for spacecraft mission planning that take into account all other known GSO objects and space debris that might intersect the GSO vicinity, and they know how to use them. There's any number of things they could do if they really want to in getting from Point A to Point B.
     
  9. Apr 28, 2010 #7489 of 10270
    James Long

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

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    It would be amazing to see them try (and succeed). Going between orbital slots and other orbital objects would be a major challenge.

    Wasn't Boeing the company with the lunar sling shot that could have saved AMC-14 if the owners would have been able to use it (without violating the patent/copyright)? Smart folks.
     
  10. Apr 28, 2010 #7490 of 10270
    LameLefty

    LameLefty I used to be a rocket scientist

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    We (the public at large) will never know the real nitty-gritty details of what they do, so if they do anything fancier than just raise slide up and then back down we'll never see it - it'll be lost in the gaps between TLE releases.

    I believe you're correct; there was a lot of wailing and gnashing of teeth at the time, if I remember correctly. A lot of people felt that a patent like that was like trying to claim "original works" status on Newton's laws. The alternative position, however, was that it wasn't a patent on physics, just a unique method of applying physics to a class of problems (a procedural patent).

    I come down on the side of the nay-sayers myself. I think patents are granted too broadly and that satellite operators ought to be able to do any series of maneuvers they want to.
     
  11. Apr 28, 2010 #7491 of 10270
    oldfantom

    oldfantom Icon

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    It is amazing how quickly this thread goes from pudgy mods to "What the hell" math in no time flat.
     
  12. Apr 28, 2010 #7492 of 10270
    Stuart Sweet

    Stuart Sweet The Shadow Knows!

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    Who you callin' pudgy? :lol:
     
  13. Apr 28, 2010 #7493 of 10270
    timmmaaayyy2003

    timmmaaayyy2003 Hall Of Fame

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    It's okay Stuart. He wasn't refering to the "Super" moderators.:p
     
  14. Apr 28, 2010 #7494 of 10270
    Stuart Sweet

    Stuart Sweet The Shadow Knows!

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    (or the super-sized ones :lol:)
     
  15. Apr 28, 2010 #7495 of 10270
    Lord Vader

    Lord Vader Supreme Member DBSTalk Club

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    What the hell is a "super" moderator anyway, and what exactly makes them so "super"? :confused: :lol:
     
  16. Apr 28, 2010 #7496 of 10270
    James Long

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

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    People should be able to benefit from their work and employers from their employee's work. Boeing put money into developing the technique. But it does seem odd to patent math. I can't remember if the problem was with Boeing refusing to allow their method to be used at any price or the owners not wanting to pay the price Boeing wanted. In any case, a satellite is pretty useless when it isn't in the right place.
     
  17. Apr 28, 2010 #7497 of 10270
    James Long

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

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    We, like you, have capes.
     
  18. Apr 28, 2010 #7498 of 10270
    dcowboy7

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    Too late, entries were drawn noon time.
     
  19. Apr 28, 2010 #7499 of 10270
    MartyS

    MartyS New Member

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    I've been spreading wider since I turned 40 :rolleyes: :lol:
     
  20. Apr 28, 2010 #7500 of 10270
    brett_the_bomb

    brett_the_bomb Legend

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    oooooo how do i get a cape????
     
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