Hi Alfredo,

If you put 'mpcorb.dat' in your Guide folder (not a subfolder), that
should do the trick, and asteroids will be brought up to date.

Now, as to those two "outdated links"... they are to

http://www.imcce.fr/fr/ephemerides/donnees/comets/ASCII/ELTDAT.TXT
http://www.minorplanetcenter.org/iau/Ephemerides/Comets/Soft02Cmt.txt

The former gives elements for comets from about 1995 to the present,
but it isn't updated all that regularly. The latter is right up to the
minute, but doesn't include anything except currently visible objects.
Put them together, though, and they cover all comets found since 1995,
with a little overlap. (And Guide has a list on the DVD covering everything
before then, in case somebody wonders where the Great Comet of 1811 was.)

However, both links appear to be quite current, so I think the
trouble you're seeing must be something else. (And the text you quote
comes from the current version of Guide, so that's not the problem either.)
Exactly what error message(s) are you getting when you "click to download
updated comet data and add it to Guide"?

-- Bill

On 01/27/2015 01:37 PM, alfredo caronia alfredoc49@... [guide-user] wrote:
> Hello Bill! In relation to this step of your email 27/01/2015:
>
> "
>
>
> *Anyway. The new scheme is a heck of a lot simpler, and the bugs appear to
> have all vanished. It does require, however, that you download 'mpcorb.dat'
> so that _all_ asteroids are replaced with one consistent dataset of orbital
> elements.* "
>
>
> I wanted to say that the option "Add MPC Comets / Asteroids" in "Extras"
> menu does not work because refers to two outdated links!
>
> In fact, it reads: "T*he Minor*
>
>
>
>
>
>
> * Planet Center (MPC) and the IMCCE Shops provide orbital elements for
> comets. Guide updates ITS list of comets using Both sources; MPC Gives
> currently-observable comets, all IMCCE comets since about 1995. (Data for
> historical comets is Already built Into the DVD Guide.) You can click on to
> download the Following some of These files, getting orbital date for
> newly-found objects and Already known for improving on orbits objects.
> About 600 KBytes will be downloaded.* "
>
> But the MPC link and Ithe MCCE link included in the note above are no longer
> active!
>
>
> I therefore assume that the automatic update of the data of asteroids does
> not work anymore! (Maybe I'm wrong? Possibly correct me!)
>
> So, being so, I ask for confirmation if the suggested alternative ( viable for
> the future ) is the manual download of mpcorb.dat and, in this case, i
> wonder in which folder, I should put the file of mpcorb.dat!
> Should I create a new folder in C: / Guide for instance?
> Thanks for tips and clarifications!
>
> Best Regards!
>
> Alfredo Caronia
>
> 2015-01-27 3:05 GMT+00:00 Bill Gray pluto@... [guide-user] <
> guide-user@yahoogroups.com>:
>
>>
>>
>> Hi Roger,
>>
>> Updating via the critical list, or any "sublist", is very likely to
>> lead to trouble. In fact, it's not even an option with the currently
>> posted software at
>>
>> http://www.projectpluto.com/new.htm
>>
>> I'd advise downloading that, and then getting the current 'mpcorb.dat'
>> from the MPC site.
>>
>> I know I described the issue somewhere, but can't find it now, so here
>> goes: For many years, Guide tried to handle asteroid and comet updates by
>> downloading the smaller files MPC provides, and attempting to figure out
>> which objects were updates and which were new objects, and trying to
>> account
>> for the fact that sometimes you got the same objects with new designations.
>> To say that the resulting code was bizarre would be an understatement. That
>> led to bugs. There may have been more inquiries about problems with adding
>> comets and asteroids than any other part of Guide.
>>
>> Anyway. The new scheme is a heck of a lot simpler, and the bugs appear
>> to have all vanished. It does require, however, that you download
>> 'mpcorb.dat' so that _all_ asteroids are replaced with one consistent
>> dataset of orbital elements.
>>
>> -- Bill
>>
>> On 01/26/2015 07:32 PM, roger.curry@... [guide-user] wrote:
>>> I updated my asteroid list with the critical list today but can not find
>> the asteroid using 2004 BL86. I also went to the area it is supposed to be
>> in and it did not show up under that designation, How do I find it in Guide?
>>>
>>>
>>
>>
>