Blair, Grant Nov 9, 2013
C/2013 R1 was most definitely around mag 6 (maybe even marginally brighter) this morning. It was detectable with the naked eye under less-than-perfect transparency from my home in NJ.
But don’t feel bad about Guide not estimating cometary magnitudes – even humans have a hard time of it!
Right now, Lovejoy is far out-shining ISON J
Grant
From: guide-user@yahoogroups.com [mailto:guide-user@yahoogroups.com]
On Behalf Of Bill Gray
Sent: Saturday, November 09, 2013 10:53 AM
To: guide-user@yahoogroups.com
Subject: Re: [guide-user] comet Lovejoy
Hi Lawrence,
As I recall, you're using the current Guide 9 software from
http://www.projectpluto.com/new.htm
...true? With this, updating Guide's database basically means
it gets the latest MPC file (soft02cm.txt) and IMCCE/Rocher file
(eltdat_g.txt), and reads those. What you have in 'comets.dat'
or 'now_comt.dat' no longer matters; you could delete those files
and be perfectly okay.
Anyway. I'm also finding Lovejoy (C/2013 R1) to be around mag 8.9,
which is suspicious, especially since Clay e-mailed me recently
about C/2013 US10 not displaying. It turned out that it _was_
displayed, but at mag 22.6. It's several magnitudes brighter than
that. I'll investigate... dunno if MPC's comet magnitudes are weird,
or Guide is misinterpreting something (which would be very odd, since
I only learned of the problem recently).
-- Bill
On 11/09/2013 04:58 AM, Lawrence wrote:
> I updated Guide's comet database but there is no listing of comet
> Lovejoy, currently reported to be brightening around mag 6. Any help here?
>
> Lawrence Harris