Denis,


I don't use MPCORB mainly because it slows Guide. Your program is a good
idea. I am interested, at least to see how faster Guide will handle the
reduced file.

On the other hand, it could be a good idea if Guide itself had a built-in
option to make the same job. Bill, what's your opinion?


Laurent

----- Message d'origine -----
De : "Denis" <boucherd@...>
À : <guide-user@yahoogroups.com>
Envoyé : samedi 28 avril 2007 06:47
Objet : [guide-user] MPCOrb.dat Sorter

> For those interested I have written a small program which takes the
> large MPCOrb file and reduces it to a small file of asteroids based on
> user date and magnitude settings.
>
> Simply select a date and maximum magnitude, the program calculates the
> asteroid position and determines its magnitude on the specified date.
> Then it writes to a new file(MPCOrb.dat) only elements with magnitude
> less than specified by the user. By doing this once a month, one can
> keep the size down and asteroid up to date. The process takes 10 to 15
> seconds to complete on my 2 year old laptop.
>
> A 16 magnitude setting showed 1348 asteroids, file size 271k.
> A 18 mag setting gave me around 10,000 with a file size a little more
> than 2 meg.
>
> Let this list know and if interest is high enough I will post a link to
> my site to download it.
>
> Denis
>