Alan Cahill Dec 1, 2004
>Alan Cahill
>Hi Alan,
>
> I'll assume you're using ASTFILTER=b . This will cause Guide to
>display only asteroids from 'comets.dat' (that is, those added
>using "Add MPC Comets/Asteroids"). What you'd really want here
>is the opposite of that: something to suppress asteroids from
>'comets.dat', leaving only those from 'mpcorbcr.dat'. Guide doesn't
>have anything like that.
>
> The problem is complicated by the way Guide detects which asteroids
>in its built-in elements, or in 'mpcorb*.dat', should be replaced
>by those in 'comets.dat'. If Guide finds, say, asteroid (433) Eros
>in 'comets.dat', it assumes it should skip the 433rd asteroid of your
>input file.
>
> That makes perfect sense if you're actually using either the built-in
>elements or 'mpcorb*.dat', which has all numbered asteroids. But in
>your files, the 433rd asteroid will not be Eros. That's why the objects
>get shown twice.
>
> Anyway, the fix is relatively simple. Edit 'comets.dat' and remove
>all the asteroids. Be sure to adjust the number on the top line of the
>file to reflect the number of actual objects that remain. All the
>"duplicates" will vanish. (If Guide had a function opposite to
>ASTFILTER=b, one which suppressed asteroids from 'comets.dat' instead
>of asteroids from its built-in elements or your mpcorb*.dat file, you
>could use that instead. Something for me to consider for the future.)
>
>-- Bill