[Kstars-devel] Duplication for proper motion, the inaccurate way

Akarsh Simha akarshsimha at gmail.com
Mon Jul 7 01:03:40 CEST 2008


Hi

Assuming that we go by the inaccurate formulae that we currently use
for proper motion, it seems that we will require just about 2.1%
duplication for +/- 10000 years, taking the 50 arcmin tolerance into
account.

There was a bug with the script I used earlier - I had forgotten to
convert the argument to the cos() function into radians. With that
fixed, the scatterplot (attached) seems reasonable, showing a nearly
linear variation between the proper motion and the maximum number of
duplicate entries.

Regards
Akarsh
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