On 17 Mar 2007 07:00:46 -0700, "George Dishman"
wrote:


"Henri Wilson" HW@.... wrote in message
.. .
On Fri, 16 Mar 2007 16:59:26 -0000, "George Dishman"
wrote:


... I doubt if the published one is particularly accurate.

_You_ calculate the accuracy by statistical techniques,
that's what get you the error bars. You can also estimate
systematics but factors like mis-calibration should apply
equally regardless of orbital phase.

Sure....and 'error bars' can come in very handy when one wants to fiddle the
results.

Ain't stats wonderful?

Then those curves will almost certainly be failures too, you
cannot have a stable configuration with a third object except
under _very_ limited conditions (e.g. figure of eight or the
very disparate separations like the Sirius system).

George, does Jupiter have moons and orbit the sun?
Does the Earth have a moon George and orbit the sun?

OK, I should have also said "very disparate masses". There is
an upper limit of a mass ratio of ~24:1 for the Lagrange point
stability.

http://en.wikipedia.org/wiki/Lagrangian_point#Stability

yes yes, theories theories.

Three body problems are not easily solved generally....let alone four of five
body problem...

I don't think you have fully realised the complexity of this whole issue
George.

I don't think you realise the complexity of the effect of
speed unification on VDoppler ;-)

I am not worrying about speed unification at the moment. The chancess are its
effect is much less than I thought it was. Rather, my 'distance discrepancies'
are largely due to orbit pitch.

I don't think you realise the constraints Keplerian orbits
place on you Henry.

George, there are probably 10 billion stars in our galaxy, most with
companions
and orbiting planets.
Do you really think we know every possible configuration just by
investigating
our own solar system?

No, I think we can eliminate unstable configurations by
applying Newton's Laws (relativistic effects are small).

That would be nice..

However my program IS strictly limited to Keplerian orbits. I introduced
the
phase variation to investigate Lagrange points....and found evidence that
objects DO exist at the 60 degree one.

How can YOU explain a curve like this one:

http://www.britastro.org/vss/gifl/00064.gif

It's certainly not a simple overtone.

...but the dip can be explained with an object rotating in the same orbit but
with 60 degree lag.

see S Cas in:
www.users.bigpond.com/hewn/group1.jpg

Mine is the yellow curve....a perfect fit...

Unfortunately, however, I cannot explain the claimed magnitude change of about
9. In fact I don't believe it. According to the britastro website, there is a
group of stars that appears to have very large changes in brightness. How do
YOU explain those? I think somebody forgot to convert to a log scale.



What mass ratio?

You can get an estimate from the relative sizes of the dip and main curve. I
would say about 4:1 .


George



"When a true genius appears in the world, you may know
him by this sign, that the dunces are all in confederacy against him."
--Jonathan Swift.