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Re: Halo's Motion
Posted By: Loren Petrich <petrich@netcom.com>Date: 10/22/99 4:51 p.m.

In Response To: Halo's Motion (Nathan)

> - as has been figured out, the halo "hologram" is not
> quite accurate. the halo is of course too close to the large
> celestial body and is not at the proper position to be at the
> lagrange point.

One thing that could be going on is projection -- if the orbit plane is significantly far from being perpendicular to the view direction, then Halo can appear closer to Jonesworld than it is. However, diagrams of planetary and satellite systems tend not to be projected in this fashion, but instead have their orbit plane(s) perpendicular to the view direction.

> - the axis of halo may not be correct in the hologram picture

That could, however, mean that Halo's symmetry axis is significantly inclined to its spin axis, which, however, would make the local "gravity" vector significantly tilted.

> - we have never stated what exactly halo orbits, except for how
> it behaves at the lagrangian point - in a halo orbit. If you
> figure how that works, it should be pretty easy to figure out
> that it can neither orbit either of the celestial bodies in the
> rest of the hologram.

This would be either L4 or L5 -- either 60 degrees ahead of or behind of Zartmoon in their shared orbit around Halo.

A halo orbit is an orbit around a Lagrange point, a sort of orbit upon orbit, something like how an elliptic orbit is related to a circular one.

Message Index



Replies:

Chaotic Motion?Loren Petrich 10/21/99 2:31 a.m.
     Re: Chaotic Motion?Butcher 10/21/99 4:25 p.m.
           Re: Chaotic Motion?Loren Petrich 10/21/99 6:09 p.m.
                 Halo's MotionNathan 10/22/99 9:26 a.m.
                       Re: Halo's MotionLoren Petrich 10/22/99 4:51 p.m.
                 Re: Chaotic Motion?Butcher 10/22/99 5:51 p.m.
     Re: Chaotic Motion?Dispatcher 10/21/99 8:30 p.m.
           Re: Chaotic Motion?Loren Petrich 10/22/99 12:08 a.m.
                 Re: Chaotic Motion?Daft Shadow =PN= 10/22/99 12:43 a.m.
                       Halo Precession SimulatorLoren Petrich 10/22/99 2:01 a.m.
     Re: Chaotic Motion?Toby Haynes 10/22/99 9:21 a.m.
           Re: Chaotic Motion?Loren Petrich 10/22/99 4:09 p.m.



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