Still Plotting To Figure Out Satellite Behavior

[charles phillipsParticipant]

All –

FYI my quest to plot all sorts of stuff continues. I analyze what satellites are doing and have learned to interpret some “Russian” information (actually some people in Russia run an International effort).

My contention is that when you plot a specific orbital parameter, the change of that parameter per time can be used to do a preliminary assignment of a particular item to a particular launch. This is important though often difficult.

In the following plot you can see 5 satellites where two can be assigned to known satellites (29249 and 29250) and three are unknown satellites (90103, 90117, and 88710). Just from this early set of data it is apparent that 88710 and 90117 are NOT associated with 29249 but probably 90103 is. I looked, a while ago, at how to calculate the slope of the line and have to go dig that out again.

This is just a preliminary plot because I am excited that this technique seems to produce useful information so quickly, I had to post this somewhere.

I am starting to work on an academic paper (which will take me months) to try to get this technique (if it works out like it seems to) recognized as a useful tool for orbital analysis.

The vertical separation is not significant, the slope of the line is the important quantity.

[charles phillipsParticipant]

Ok I swear that I took geometry, linear algebra, and trigonometry. Now I am trying to refresh my knowledge of how to get a simple slope of a straight line.

For this graph…

I think that the slope is 0.112

This one:

The slope is 0.031

How do I get DG to give me this simple number?

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