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Ranging and Pioneer



 
 
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Old August 22nd 06, 11:11 AM posted to sci.physics.research,sci.astro.research
Oh No
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Posts: 433
Default Ranging and Pioneer

Thus spake "John (Liberty) Bell"

Which requires that observers in different directions can all be in
agreement about the relative motion of each star, and all be wrong.
This strikes me as a little far fetched.


That is not exactly right. Each observer has the same systematic error
in the orbital motion of each star, and of course the systematic error
also affects the orbital velocity of each observer. But what they
measure are relative motions, which are of an order of magnitude less
than the error in orbital velocity, and actually much less than the
random differences between the orbits of stars. After allowing for these
differences it would be possible, in principle, to pick up small
differences in relative motion. But it would not be easy.



Regards

--
Charles Francis
substitute charles for NotI to email
 




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