Dear colleagues, Several interesting rendezvous events will occur in July. For other rendezvous events, please see: ...
19688
RICHARD MILES
gallileo99uk
Jul 3, 2012 11:16 am
Further to my previous note sent on May 19, George Faillace and I have now observed 17P on several further occasions including earlier today. It now looks that...
19689
gvnn64@...
gvnn64
Jul 3, 2012 11:20 am
Hi Richard, please can you estimate the associated error bars in your photometric measurements? Thanks, Giovanni Sostero...
19690
RICHARD MILES
gallileo99uk
Jul 3, 2012 11:41 am
Giovanni, I have calculated the formal errors for the last two observations, so the numbers at present are: Date R mag Apr 13 21.1 Apr 19 20.9 May 13.0...
19691
Dave Herald
dave_herald
Jul 3, 2012 12:16 pm
For info – I’ve imaged 17P more recently (40cm scope), with the following unfiltered mags: 2012 05 20.36 19.7 2012 05 20.37 21.0 2012 06 07.51 20.4 ...
19692
Jure Zakrajšek
pikot01
Jul 5, 2012 6:35 pm
Dear friends Im glad to tell you that after serious technical issues COBS server is back online and the website is now operational again. The database was...
19693
Dave Herald
dave_herald
Jul 6, 2012 4:28 pm
Thought I would mention... 189P is worth watching at the moment. It is currently moving at about 6”/minute northwards, at a geocentric distance of 0.17AU....
19694
andre@...
astrowulff
Jul 6, 2012 6:07 pm
Hallo Dave, thank you very much for the reminder. The comet will become observable for northern hemisphere observers very quickly. But we will need fast optics...
19695
Dave Herald
dave_herald
Jul 6, 2012 11:54 pm
I images it at f10, using a stack of 20-sec exposures. Dave Herald Murrumbateman, Australia From: andre@... Sent: Saturday, July 07, 2012 4:07 AM To:...
19696
John Drummond
john_drummon...
Jul 7, 2012 12:28 am
Hi Dave, yes, 189P is sure motoring along! I did some astrometry of it as part of my normal astrometry programme and in the 2 minute exposures it was a very...
19697
Dave Herald
dave_herald
Jul 7, 2012 1:45 am
I’ve posted an image at: http://tinyurl.com/824h65k with the caption being: A stack of 6 x 20sec images with 40cm f10 scope. Field size is about 4.5 arcmin...
19698
cometas71
Jul 7, 2012 8:14 pm
Hi all , update the light visual curve of comet C/2011 L4 here : http://astrocometas.blogspot.com Regards , J.P.Navarro Pina ....
19699
Seiichi Yoshida
seiichi_yosh...
Jul 10, 2012 6:49 pm
Dear colleagues, Many comets are waiting for first observation. http://www.aerith.net/comet/recovery.html 58P/Jackson-Neujmin is remarkable one, appearing in...
19700
Artyom Novichonok
artnovich
Jul 11, 2012 6:18 pm
Hello All! I updated my comets light curves page: http://severastro.narod.ru/sla/com/lc.htm -- Best regards, Artyom. My comets light curves page: ...
19701
Burkhard
kometarium
Jul 12, 2012 1:36 pm
Hello, just a short reminder that comet 96P/Machholz has entered the field of LASCO C3 today. Regards Burkhard...
Hi all, Now asteroidal object 2012 NJ is designated as a comet -- P/2012 NJ (La Sagra) (http://www.minorplanetcenter.net/mpec/K12/K12O08.html). Currently I...
19704
walcom77
Jul 18, 2012 6:14 pm
... According to Cbet 3178, a 35" tail has been reported by observers using the 1.23-m telescope on Calar Alto on July 16, 17, and 18 UT. ...
19705
Juan Jose Gonzalez
jjgsgp
Jul 18, 2012 6:25 pm
P/2012 NJ (La Sagra): 2012 July 17.10 UT: m1=14.5, Dia.= --, DC=9, 20 cm SCT (160x). [ Stellar appearance. Nearby field stars checked in DSS. Comparison stars...
19706
Leonid Elenin
l.elenin
Jul 18, 2012 6:44 pm
Will be very interesting to see this images... Leonid Elenin, ISON-NM Observatory (H15)...
19707
Benjamin Brink
tekbasse
Jul 18, 2012 7:22 pm
In addition to the close approach, observations may be interesting also for the week starting Aug. 19th. Dare I predict an outburst? ;-)...
19708
Soulier Jean-Fran...
jeffcomete
Jul 21, 2012 10:34 am
Good morning. P 2012 NJ La Sagra, tail : + / - 2.15 ', speed : 6.05 "/ min, acquisition unit 30s, no filter. ...
19709
Juan José Gonz...
jjgsgp
Jul 23, 2012 6:49 am
96P/Machholz: 2012 July 22.88 UT: m1=7.8, Dia.=1.5', DC=5, Tail: 0.1 deg. in PA 60 deg, 20 cm SCT (77x). [ Altitude: 9 deg. Mountain location, very clear sky. ...
19710
Soulier Jean-Fran...
jeffcomete
Jul 23, 2012 3:13 pm
Good morning. Tail of +/- 2 ', speed : 6.07 "/ min, PA : 310 , acquisition unit 30s, no filter. P 2012 NJ La Sagra (+zoom) ...
19711
walcom77
Jul 23, 2012 6:42 pm
Hi All Blog updated with info and our confirmation image of newly discovered comet P/2012 O2 (MCNAUGHT): http://bit.ly/PBejq8 Ciao, Ernesto Guido, Giovanni...
19712
dfischer@...
skyweek
Jul 23, 2012 7:04 pm
http://www.astro.uni-bonn.de/~dfischer/stories/panstarrs/matrix.html is a rough analysis of the (geometrical) viewing conditions for PanSTARRS at various...
19713
JS & EJ Gifford
jsg388
Jul 24, 2012 1:17 am
Hi Dan, By adjusting the location setting in Guide 9, which always shows tail direction for bright comets, my location at 33south gives a tail before ...
19714
jbortle@...
cnj999
Jul 24, 2012 3:15 am
Actually, Jim, the tail plots from Guide only indicate the direction in which the ion, or gas, tail will be projected. Any dust tail (which is what the OP...
19715
M.-T. Hui
pachacotihui
Jul 24, 2012 9:53 am
Dan, It may be a good idea to assume two parameters to define the may-be-shape of the dust tail, including varieties of released time of the dust particles,...
19716
Soulier Jean-Fran...
jeffcomete
Jul 24, 2012 2:37 pm
Good morning. P 2012 O3 Mc Naught Speed : 1.36"/min, PA : 153°, Coma : +/- 17", A.Mass : 3.46 http://6888comete.free.fr/fr/imageP2012O3McNaughtfrance.htm ...
