P. Clay Sherrod Aug 16, 2011
----- Original Message -----
From: "Bill J Gray" <pluto@...>
To: <guide-user@yahoogroups.com>
Sent: Tuesday, August 16, 2011 12:46 PM
Subject: Re: [guide-user] Re: Update posted
> Hi Stefano,
>
> Thank you; this is a for-real bug, affecting all retrograde comets.
> If you download
>
> http://home.gwi.net/~pluto/lunar.dll
>
> (about 152 KBytes), the problem will be fixed.
>
> A little while ago, I realized that inclinations of exactly 90
> degrees led to a divide by zero error. So I fixed this, and all
> appeared to be well. But it meant that all prograde inclinations
> (and those with inclination of exactly ninety degrees) worked, and
> all retrograde orbits were off by 180 degrees. I've tested the above
> with both retrograde and prograde cases. The new 'lunar.dll' works
> with all of them, and the old one failed on every retrograde case.
>
> I've also had a bug report (via private e-mail) regarding downloads
> of satellite data. The problem here is that the data comes from
>
> http://www.tle.info/data/
>
> An hour or two ago, there was a valid 'all_tle.zip' in that folder,
> and the smaller files for geosats, Iridiums, and so on had been
> truncated to 112 bytes. Right now, though, 'all_tle.zip' is 172
> bytes long. It is a perfectly valid .ZIP file, containing a zero-byte
> 'all_tle.txt'.
>
> The tle.info site has had temporary issues before, and I _assume_
> that's what we're seeing now... we may hope so, since I know of no
> alternative source unless one gets an account with space-track.org.
> In that case, one is reduced to downloading files from that site and
> telling Guide to use them, rather than the simpler click-and-load
> solution we're using now.
>
> In the same bug report, it was mentioned that satellite magnitude
> data was unavailable. It turned out that the site had moved (the data
> was hosted on www.io.com, which vanished a little while ago). I've
> found the new location and will update Guide accordingly.
>
> Anyone found anything else of interest?
>
> -- Bill
>
>
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