Dear list,

from June 03 - 06, I will be attending the IWCA III in Paris, France.
Most likely I will will have no possibility to check e-mail. Thus it
will not possible to approve/disapprove messages of new members, which
are set as moderated. Please be patient if your message does not appear,
I will be back on Sunday and will then take care of them.

Cheers, Maik
--
If they give you ruled paper, write the other way.  * Juan Ramon Jimenez
________________________________________________________________________
         maik@...          http://www.comethunter.de
         German Comet Section         http://www.fg-kometen.de
                http://groups.yahoo.com/group/comets-ml

Venus is now visible in SOHO.
http://sohowww.nascom.nasa.gov/data/realtime-images.html
You can see it in the LASCO C3 images now, and should be able to see
it in the other images for the Transit.

Carey

Well, I finally saw Comet LINEAR T7 again on Thursday evening. I was
at the ASH Naylor Observatory and observed it with the 17" f/15
classical Cassegrain at 118, 144, 162, and 259x. The sky was mostly
clear but conditions were not ideal. The comet was located just to
the southwest of Alphard and was barely visible through the 5" f/5
finder scope. I could not see it with my Meade 8x42 binocular.

At third to fourth magnitude C/2001 T7 (LINEAR) certainly is
brighter and also has a larger coma than it did some months ago,
before it dove out of view for northern observers. At 259x the coma
was noticeably asymmetrical but there was no hint of a tail.

After viewing a number of other objects including the Moon, Jupiter,
Alpha Herculis, M104, M51, M57, and M3 through the ASH 12.5" f/6.5
Cave Newtonian, the ASH 127mm f/12.1 Orion MCT, and a fellow
member's 10" Meade f/10 LX200 SCT I finally remembered to track down
the other "great" comet, C/2002 Q4 (NEAT) with the 12.5". Fifth
magnitude Comet NEAT Q4 was postioned just to the west of a fifth
magnitude star that is northwest of Lambda Ursae Majoris. The coma
was smaller and perhaps more condensed than it had been and there
was still a bright pseudonucleus. Magnifications of 52, 79, 121, and
159x were used.

Dave Mitsky

Dear colleagues,

The following comets are not observed recently and current brightness
is uncertain.

29P, C/2001 HT50, 65P, 53P and 116P have been already in the morning
sky, but not observed yet.

(944) Hidalgo is coming to be visible also in the Northern Hemisphere.

Akimasa Nakamura reported that P/2003 CP7 and C/2001 G1 were not
visible on his images on Mar. 28. So they can be fainter than this
ephemeris.

   http://www.aerith.net/comet/not_observed.html

                                         Blank   Brightness Change
Comet                       Last Obs.  (month)   in Blank Period
29P/Schwassmann-Wachmann 1  2004 Jan 19   5.0  13.7 ---------> 13.5
C/2001 HT50 (LINEAR-NEAT)   2004 Mar  3   3.5  13.9 ---------> 14.9
65P/Gunn                    2003 Dec  7   6.4  14.7 ---------> 15.8
(944) Hidalgo               2003 Dec  6   6.4  17.7 ---------> 16.5
C/2002 L9 (NEAT)            2003 Oct 20   8.0  16.8 ---------> 16.6
53P/Van Biesbroeck          2003 Nov  3   7.5  15.1 ---------> 16.7
C/2002 J4 (NEAT)            2003 Dec 14   6.2  16.7 ---------> 16.9
C/1999 F1 (Catalina)        2004 Jan 23   4.8  16.5 ---------> 17.0
116P/Wild 4                 2003 Sep  8   9.4  15.3 ---------> 17.4
95P/(2060) Chiron           2003 Aug 22  10.0  17.5 ---------> 17.7
C/2003 F1 (LINEAR)          2003 Sep 18   9.1  17.3 ---------> 17.7
(10199) Chariklo            2003 May 23  13.0  17.6 ---------> 17.7
C/2003 J1 (NEAT)            2003 Sep  3   9.6  17.3 ---------> 17.8
(8405) Asbolus              2003 Dec 16   6.1  17.8 ---------> 17.8
42P/Neujmin 3               2003 May 28  12.8  24.5 ---------> 17.9
74P/Smirnova-Chernykh       2003 Jun 11  12.4  17.5 ---------> 18.5
2P/Encke                    2004 Jan  1   5.6   8.0 ---------> 18.7
C/2001 C1 (LINEAR)          2002 Jun  3  24.8  15.9 ---------> 18.9
2003 WN188                  2003 Dec 22   5.9  18.2 -> 17.0 -> 18.9
P/2003 CP7 (LINEAR-NEAT)    2003 Jun 26  11.9  18.9 ---------> 19.1
P/1999 WJ7 (Korlevic)       2002 Apr  5  26.8  18.3 ---------> 19.4
C/2001 G1 (LONEOS)          2003 Jun  1  12.7  18.6 ---------> 19.4
P/2003 L1 (Scotti)          2003 Jun 20  12.1  19.2 ---------> 19.4
P/2004 CB (LINEAR)          2004 Apr 23   1.8  17.3 ---------> 19.4
C/2002 X1 (LINEAR)          2004 Jan 17   5.0  17.6 ---------> 19.6
(5145) Pholus               2003 May 29  12.8  19.4 ---------> 19.7
C/2000 A1 (Montani)         2002 Feb 15  28.4  18.8 ---------> 20.2
2001 QQ199                  2003 Feb  1  16.7  18.6 ---------> 20.6
(60558) 2000 EC98           2003 May  6  13.6  21.3 ---------> 21.3

2004 June 17 at lat. 35 deg in the Northern/Sothern Hemisphere:
                                                Lat. 35 N deg    Lat. 35 S deg
Comet                        R.A.  Decl.  m1   Best Time(A, h)  Best Time(A, h)
29P/Schwassmann-Wachmann 1  00 24 +09.9  13.5   2:58 (282, 33)   5:36 (202, 42)
C/2001 HT50 (LINEAR-NEAT)   00 54 +16.2  14.9   2:58 (271, 31)   5:36 (208, 34)
65P/Gunn                    01 16 -01.8  15.8   2:58 (284, 16)   5:36 (226, 47)
(944) Hidalgo               01 50 -02.1  16.5   2:58 (279,  9)   5:36 (236, 42)
C/2002 L9 (NEAT)            00 32 -58.9  16.6   2:58 (333,-15)   5:36 (339, 63)
53P/Van Biesbroeck          00 41 +01.7  16.7   2:58 (287, 25)   5:36 (212, 49)
C/2002 J4 (NEAT)            01 60 -37.0  16.9   2:58 (306,-13)   5:36 (285, 57)
C/1999 F1 (Catalina)        02 41 -22.9  17.0   2:58 (289,-13)   5:36 (269, 44)
116P/Wild 4                 22 11 -15.4  17.4   2:58 (333, 35)   4:29 (180, 70)
95P/(2060) Chiron           19 42 -13.9  17.7   2:00 (  0, 41)   2:00 (180, 69)
C/2003 F1 (LINEAR)          17 38 -14.6  17.7  23:53 (  0, 40)  23:53 (180, 70)
(10199) Chariklo            11 23 -19.4  17.7  21:03 ( 50, 17)  18:25 (144, 71)
C/2003 J1 (NEAT)            22 12 -67.7  17.8   2:58 (351,-14)   4:30 (  0, 57)
(8405) Asbolus              23 34 -11.0  17.8   2:58 (310, 28)   5:36 (190, 66)
42P/Neujmin 3               20 14 -14.6  17.9   2:32 (  0, 40)   2:32 (180, 70)
74P/Smirnova-Chernykh       22 10 -18.3  18.5   2:58 (334, 33)   4:28 (180, 73)
2P/Encke                    22 40 -14.2  18.7   2:58 (324, 33)   4:59 (180, 69)
C/2001 C1 (LINEAR)          02 33 -50.0  18.9   2:58 (315,-25)   5:36 (309, 52)
2003 WN188                  11 36 +29.9  18.9  21:03 ( 96, 50)  18:25 (172, 25)
P/2003 CP7 (LINEAR-NEAT)    16 36 -07.2  19.1  22:51 (  0, 48)  22:51 (180, 62)
P/1999 WJ7 (Korlevic)       16 29 -24.0  19.4  22:44 (  0, 31)  22:44 (180, 79)
C/2001 G1 (LONEOS)          15 18 +07.8  19.4  21:34 (  0, 63)  21:34 (180, 47)
P/2003 L1 (Scotti)          17 38 -16.3  19.4  23:53 (  0, 39)  23:53 (180, 71)
P/2004 CB (LINEAR)          23 45 -31.6  19.4   2:58 (321, 11)   5:36 (241, 83)
C/2002 X1 (LINEAR)          00 50 -10.8  19.6   2:58 (295, 15)   5:36 (226, 58)
(5145) Pholus               15 46 +04.4  19.7  22:01 (  0, 59)  22:01 (180, 51)
C/2000 A1 (Montani)         12 19 +23.1  20.2  21:03 ( 80, 56)  18:35 (180, 32)
2001 QQ199                  10 11 -19.9  20.6  21:03 ( 62,  5)  18:25 (112, 60)
(60558) 2000 EC98           12 13 -00.3  21.3  21:03 ( 54, 40)  18:29 (180, 55)

Best regards,

--
Seiichi Yoshida
comet@...
http://www.aerith.net/

Dear colleagues,

The following comets are waiting for the first observation now.

56P will be observed soon.

58P has finally gone without any observations in this return. Nobody
tried to observe it after all?

103P is not observable until autumn.

P/1996 R2 must be 2.5 mag or more fainter than brightness at
discovery.

   http://www.aerith.net/comet/catalog/index-periodic.html
   http://www.aerith.net/comet/recovery.html

2004 June 17 at lat. 35 deg in the Northern/Sothern Hemisphere:
                                                Lat. 35 N deg    Lat. 35 S deg
Comet                        R.A.  Decl.  m1   Best Time(A, h)  Best Time(A, h)
103P/Hartley 2              05 18 +18.9  10.7   2:58 (230,-18)   5:36 (254,-11)
58P/Jackson-Neujmin         05 50 +14.6  16.4  21:03 (130,-24)  18:25 (100,-12)
56P/Slaughter-Burnham       23 40 -04.2  17.8   2:58 (303, 32)   5:36 (191, 59)
32P/Comas Sola              01 55 +02.3  19.0   2:58 (275, 11)   5:36 (233, 38)
99P/Kowal 1                 07 28 +25.7  20.0  21:03 (122,  0)  18:25 (122,  0)
131P/Mueller 2              00 08 +07.2  20.0   2:58 (288, 35)   5:36 (198, 46)
49P/Arend-Rigaux            00 26 -10.3  20.2   2:58 (299, 20)   5:36 (216, 61)
P/1996 R2 (Lagerkvist)      02 10 +12.2  20.3   2:58 (264, 13)   5:36 (229, 28)
P/1998 S1 (LINEAR-Mueller)  14 08 -22.1  20.5  21:03 ( 11, 32)  20:23 (180, 77)
P/1983 V1 (Hartley-IRAS)    04 37 -45.2  20.6   2:58 (302,-44)   5:36 (306, 31)
P/1999 DN3 (Korlevic-Juric) 01 23 +11.2  20.7   2:58 (272, 22)   5:36 (219, 35)
101P/Chernykh               19 17 -19.4  20.9   1:36 (  0, 36)   1:36 (180, 74)
120P/Mueller 1              01 39 +10.9  21.0   2:58 (270, 19)   5:36 (223, 33)
P/1998 X1 (ODAS)            23 22 -04.9  21.0   2:58 (308, 35)   5:36 (182, 60)
P/1993 W1 (Mueller 5)       01 00 -10.8  21.1   2:58 (294, 13)   5:36 (230, 56)
50P/Arend                   14 41 -36.0  21.3  21:03 (  1, 19)  20:57 (  0, 89)
107P/Wilson-Harrington      12 58 -09.2  21.9  21:03 ( 36, 39)  19:14 (180, 64)

Best regards,

--
Seiichi Yoshida
comet@...
http://www.aerith.net/

Hello Group -
After several days of "marine layer" I was able to find LINEAR T7
last night,here in California, just below, and southwest of Alphard.
What a dissapointment!!! It wasn't a Mag 4-5, as reported, but just
BARELY visible in my 15x70 Oberwerks.

It actually appeared in more detail, in April, when it was a morning
comet.

Neat was high in the sky, and is still - - - great to view.  Much
brighter than T7, but fading fast.

Its been a "Great Show" this year. Bradfield takes the 1st place
trophy, then Neat, and in last, SO FAR, T7.  I've learned alot about
comet viewing.
Mike L.

Hi all,

I am back from Paris after a really great meeting! I am looking forward to meet
you all again in 2009 in Japan. I hope to post a report and images within the
next month.

Also, I would like to remind everybody to stay on-topic (comets, you know ;))
and
to direct pure observing reports to the CometObs list rather than to this list.

Thanks, Maik
--
If they give you ruled paper, write the other way.  * Juan Ramon Jimenez
________________________________________________________________________
        maik@...          http://www.comethunter.de
        German Comet Section         http://www.fg-kometen.de
             http://groups.yahoo.com/group/comets-ml

> Akimasa Nakamura reported that P/2003 CP7 and C/2001 G1 were not
> visible on his images on Mar. 28. So they can be fainter than this
> ephemeris.

Dear Seiichi,

J. Moreno raported C/2001 G1 at 16.5 on May 15. I try also catch this
comet on May 28. There's small object which slight moved at correct path.
My estimate 16.7 mag with 0.6' coma.
Maybe it is small outburst of this comet. Later comet was too close to Moon
to observe.

Best regards,
Maciej

--- In comets-ml@yahoogroups.com, "Carey Johnson" <quarkcsj@h...> wrote:
> Venus is now visible in SOHO.
> http://sohowww.nascom.nasa.gov/data/realtime-images.html
> You can see it in the LASCO C3 images now, and should be able to see
> it in the other images for the Transit.
>
> Carey

The planet has also been visible from ground until June 7, 2004. I
have followed the planet recently and my last pre-transit observation
was made on Jun. 7.48 UT when it was 1.5 deg. from the Sun. Despite
this small angular distance it was clearly visible through a 70-mm
refractor (using 24x and 48x). For safety reasons the Sun was
hidden behind a house. This observation was made from Fjellhamar,
near Oslo, Norway. This indicates that comets of magnitude (m1) -2
to -3 or brighter should be visible when close to the Sun.
                                   Yours sincerely,
                                   Bjorn H. Granslo

imaged  C/2003 K4 LINEAR on 7 June at 0534 UT.  C-11 scope at f/5
and MX716 CCD camera.  A small movie is included on my New Image
Page linked below to illustrate the relative motion of the comet.

I have followed John Bortel's advice and have diligently tried to
properly orient my images and indicate scale.  I was concerned about
my K4 images because they show the tail at a different angle than
Guide 8.

In the past I have always had good agreement between the Guide 8
depiction and my images, and hence my concern. I think the tail is
now divided in two, but I was not sure if this was a gradient
artifact or a real second tail. Therefore I did not image enhance
its detail. If group members could take a look I'd appreciate it.

Images and movie at
http://home.att.net/~dpersyk/new.htm

Thank you for visiting my site.

Clear skies,

Dennis Persyk
Igloo Observatory Home Page http://dpersyk.home.att.net
Hampshire, IL

Any thoughts on what this comet might be like in 04/2005?  On August
24th of 2004 it crosses the top of M82 although it shows to still be
mag 14.2.  On April 5th of 2005 the comet will be .85au from the Sun
and 1.182au from Earth at mag. 6.3, although not located well.
Thought some might know more.  Thanks, Mike

Hello all:
I have captured the two tails  of comet 2003 K4. The animation is in the
web. The images are of 300".



Regards

Pepe Manteca
Observatorio de Begues  MPC 170
http://www.manteka.com  (Web de Cometas y Neos)

Dear Maciej,

> J. Moreno raported C/2001 G1 at 16.5 on May 15. I try also catch this
> comet on May 28. There's small object which slight moved at correct path.
> My estimate 16.7 mag with 0.6' coma.
> Maybe it is small outburst of this comet. Later comet was too close to Moon
> to observe.

Thank you for your observations.

I updated my light curve:

   http://www.aerith.net/comet/catalog/2001G1/2001G1.html

As you pointed out, it seems to be an outburst of about 2.5 mag from
19 mag to 16.5 mag. Follow-up observations are encouraged.

Best regards,

--
Seiichi Yoshida
comet@...
http://www.aerith.net/

I would bet this one is a comet, it's rapidly approaching perihelion
which will be in about 2 months, it'll probably develop sort of
comma.

http://cfa-www.harvard.edu/mpec/K04/K04L19.html

Juan

--- In comets-ml@yahoogroups.com, "Juan Lacruz" <juan_lacruz@y...>
wrote:
> I would bet this one is a comet, it's rapidly approaching perihelion
> which will be in about 2 months, it'll probably develop sort of
> comma.
>
> http://cfa-www.harvard.edu/mpec/K04/K04L19.html

   Unlikely.  With a period of only 3.2 years (shorter
than that for 2P/Encke) a comet in an orbit like 2004 LG
would be depleted of volatiles very quickly.  If 2004 LG
is a comet, than it is probably an extinct comet.

      Gareth

I have been reading on these comets and find, according to Guide8
that tonight 06/10-11/2004 would be a good time to image them.  78P
and 119P are only 45 arc-min appart but I have found no observations
to know if they even exist now.  Same for 65P and 34P which sit 58
arc-min apart just south of the first two.  These too have no current
info that I can find.  I know I can't read everything so are these
possible comets for viewing, and wouldn't now be a good time to find
them if none have tried recently?  Just fishing.  Mike H.
Magnitudes are est at:
78P - 14.7
119P - 17.3
65P - 15.5
34P - 16.0

Mike,

>78P and 119P are only 45 arc-min appart but I have found no observations
>to know if they even exist now.  Same for 65P and 34P which sit 58
>arc-min apart just south of the first two.

Look there:
http://cfa-www.harvard.edu/iau/lists/LastCometObs.html

78P has been observed recently at mag 17
119P hasn't been observed for a few months (I guess) but it was observed at mag
20 last November
65P was also observed last year but probably hasn't been observed recently

34P (or maybe better 34D) was lost in 1938 and the position (not to mention
brightness...) is probably quite uncertain.

Best Regards
Piotr Guzik


[Non-text portions of this message have been removed]

Thanks.  I am always looking for possibilities.  Mike

--- In comets-ml@yahoogroups.com, "Piotr Guzik" <g22@p...> wrote:
> Mike,
>
> >78P and 119P are only 45 arc-min appart but I have found no
observations
> >to know if they even exist now.  Same for 65P and 34P which sit 58
> >arc-min apart just south of the first two.
>
> Look there:
> http://cfa-www.harvard.edu/iau/lists/LastCometObs.html
>
> 78P has been observed recently at mag 17
> 119P hasn't been observed for a few months (I guess) but it was
observed at mag 20 last November
> 65P was also observed last year but probably hasn't been observed
recently
>
> 34P (or maybe better 34D) was lost in 1938 and the position (not to
mention brightness...) is probably quite uncertain.
>
> Best Regards
> Piotr Guzik
>
>
> [Non-text portions of this message have been removed]

Dear colleagues,

Here is the list of interesting rendezvous in July.

For more rendezvous events, please see:

   http://www.aerith.net/comet/rendezvous/current.html

* The rendezvous of C/2003 K4, already bright as 8 mag, and NGC 5466
   is remarkable.

2004 July 28  20h UT  0.128 deg (  7.7 arcmin)
   C/2003 K4 ( LINEAR )  14h05m.1  +28o37'   8.0 mag
   NGC5466 (Gb) 11.0'  14h05m.5  +28o32'   9.1 mag

* A 7-mag bright new comet C/2004 H6 discovered from SOHO SWAN images
   passes near by a large blue planetary nebula NGC 246, which is
   recorded in the Landolt's UBVRI Photometric Standard Stars as
   BD -12 134.

2004 July 13  16h UT  0.475 deg ( 28.5 arcmin)
   C/2004 H6 ( SWAN )  00h47m.0  -12o21'   7.9 mag
   NGC246 (Pl) 3.8'  00h47m.0  -11o53'   8.0 mag

* A new comet P/2004 F3 discovered at 15 mag, rarely bright among
   recent comets by automated survey, passes over NGC 5147.

2004 July 22   5h UT  0.015 deg (  0.9 arcmin)
   P/2004 F3 ( NEAT )  13h26m.3  +02o07'  16.2 mag
   NGC5147 (Gx) 1.8'  13h26m.3  +02o06'  11.8 mag

* Rendezvous between comets are as follows.

2004 July 10  16h UT  0.256 deg ( 15.3 arcmin)
   81P/Wild 2 	 19h02m.7  -20o10'  16.7 mag
   101P/Chernykh 	 19h02m.3  -19o55'  20.7 mag

2004 July 22   7h UT  0.032 deg (  1.9 arcmin)
   C/2004 H6 ( SWAN )  23h34m.0  -10o58'   8.0 mag
   (8405) Asbolus  23h34m.1  -10o59'  17.7 mag

2004 July 29  21h UT  0.835 deg ( 50.1 arcmin)
   116P/Wild 4 	 21h54m.0  -17o17'  17.4 mag
   2P/Encke 	 21h54m.8  -18o06'  18.3 mag

2004 July 30  15h UT  0.600 deg ( 36.0 arcmin)
   49P/Arend-Rigaux  01h09m.4  -12o23'  18.9 mag
   P/1993 W1 ( Mueller 5 ) 01h10m.3  -11o49'  20.8 mag

Best regards,

--
Seiichi Yoshida
comet@...
http://www.aerith.net/

Hi all,

it may be of interest for some of you. The link to the abstract is as
follows

http://www.journals.uchicago.edu/ApJ/journal/issues/ApJ/v607n1/59666/brief/59666\
.abstract.html

(the link may be wrapped!)

Most interesting here is the point that the age of the system may be
very small, about 1700 years. I wonder what the implications are for the
chances of another bright member.. maybe not so good?

Cheers, Maik
--
If they give you ruled paper, write the other way.  * Juan Ramon Jimenez
________________________________________________________________________
         maik@...          http://www.comethunter.de
         German Comet Section         http://www.fg-kometen.de
                http://groups.yahoo.com/group/comets-ml

Yesterday 16/06/2004 I used the BRT- SLOOH telescoop(solo mission) to find
the comet C2003 K4 Linear.

Observation time 22h 10 UT Mt Tied Tennerif.

Clear & dark skies

Lode Stevens

Secretaris VVS-afdeling Vendelinus
Http://users.pandora.be/lode.stevens/vendelinus/volks.html
Http://users.pandora.be/lode.stevens
Http://users.pandora.be/lode.stevens/cma

- Member of theTeide observatory
Bradford Robotic Telescope
Institute of Astrophysics of the Canary Islands

Basis Perustum Tungrorum Belgica
50°47'33" NB 5°30'07' OL alt:101 m




---
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Checked by AVG anti-virus system (http://www.grisoft.com).
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[Non-text portions of this message have been removed]

Dear All,
last night, looking at this comet, I spotted it around mag 13.0, 13.5 T (CCD).

Just checked the MPC website and they give the comet at mag 12.0 T on June
16.45. On MPEC MPEC L59 the comet was at mag 14.4 T. So is an outburst
apparently taking place?

Just wanted to share that with you.

Clear skies,
Gianluca
--
**********************************************************************
* Gianluca Masi                          "Two things fill the soul   *
* Via Madonna de Loco, 47              with awe and reverence [...]: *
* 03023 Ceccano (FR)                    the starry sky above me and  *
* ITALY                                   the moral law within me"   *
* e-mail: gianluca@...                          *
* Bellatrix Astronomical Observatory                   I. Kant       *
* web:  http://www.bellatrixobservatory.org                          *
* Minor Planet Center Obs. Code: 470 - Ceccano                       *
* Center for Backyard Astrophysics - Italy                           *
* VSNET Collaboration Team member                                    *
* CCD-astrometry-photometry@yahoogroups.com mailing-list moderator   *
**********************************************************************

Dear colleagues,

# Note that this information is about C/2004 K3, not C/2003 K4.

I received the recent image of C/2004 K3 from Michael Jager.

He reported the unexpected brightening of this comet. It must be
fading now in calculation. But actually, it is brightening. Now it is
as bright as about 17.0 mag.

   http://www.aerith.net/comet/catalog/2004K3/2004K3.html

Best regards,

--
Seiichi Yoshida
comet@...
http://www.aerith.net/

Dear colleagues,

I received the recent images of C/2003 K4 from Rolando Ligustri and
Michael Jager.

   http://www.aerith.net/pictures/comet.html

Rolando Ligustri pointed out that it has two tails.

Michael Jager pointed out the 1-deg long ion tail.

The comet showed unexpected rapid brightening from May to June. Now it
is about 1 mag brighter than the ephemeris.

   http://www.aerith.net/comet/catalog/2003K4/2003K4.html

Best regards,

--
Seiichi Yoshida
comet@...
http://www.aerith.net/

Dear Yoshida-san,
according to the unfiltered photometry obtained by F. Montanucci and
myself, we noticed for C/2003 K4 (LINEAR) a rise of almost 0.5
magnitudes during these last eight days (as measured within an
aperure of 100,000 Km at the comet distance, i.e. almost 1.5'
apparent diameter):

COMET C/2003 K4 (LINEAR)
Total-magnitude and coma-diameter estimates:
2004

June 9.96, 10.0, +1.4' (F. Montanucci and G. Sostero, Rome, Italy,
0.28-m reflector + CCD);
June 11.98, 10.1, +1.4' (F. Montanucci and G. Sostero, Rome, Italy,
0.28-m reflector + CCD);
June 17.87, 9.4, +1.5' (F. Montanucci and G. Sostero, Rome, Italy,
0.28-m reflector + CCD);

In the meantime the [Afrho] parameter, an indicator of the dust
production rate, has increased during the same period of time by
almost 20%, reaching a value of approximately 5,500 cm.

Cheers,
Giovanni Sostero (Remanzacco Observatory, Italy)

> In the meantime the [Afrho] parameter, an indicator of the dust
> production rate, has increased during the same period of time by
> almost 20%, reaching a value of approximately 5,500 cm.

P.S. that is comparable, as an order of magnitude, to that of C/2001
Q4 (NEAT) at the time of perihelium.
Giovanni

Hello,
this night I measured C/2001 Q4 (NEAT) before the arriving of a
cloud front. This is what I found:

COMET C/2003 K4 (LINEAR)
Total-magnitude and coma-diameter estimates:
2004
June 18.94, 9.4, +1.5' (G. Sostero, Remanzacco, Italy, 0.28-m
reflector + CCD);
June 18.93, 9.3, +1.5' (G. Sostero, Remanzacco, Italy, 0.28-m
reflector + CCD + Cousins I filter);

So, the bright phase of this comet seems to persist.

Tonight's [Afrho] values are still noticeable: almost 5,500 cm for
the unfiltered data, and 4,500 cm for the Cousins I filter. The
values found in I are smaller than those in the unfiltered data:
it's normal, because the unfiltered frames are frequently
contaminated by gaseous emissions, while the I frames are capable to
show mainly the solar continuum reflected by the dust within the
coma. Again, both the unfilterd and filtered [Afrho] values for
C/2003 K4 (LINEAR) are similar to those found on C/2001 Q4 (NEAT) at
the time of its perihelium.

Cheers,
Giovanni Sostero (Remanzacco Observatory, Italy)

Dear Maciej,

> J. Moreno raported C/2001 G1 at 16.5 on May 15. I try also catch this
> comet on May 28. There's small object which slight moved at correct path.
> My estimate 16.7 mag with 0.6' coma.
> Maybe it is small outburst of this comet. Later comet was too close to Moon
> to observe.

Pepe Manteca and Akimasa Nakamura tried to catch C/2001 G1 but
failed. Now it must be fainter than 20 mag.

J. Moreno's astrometry is available at:
   http://astrosurf.com/cometas-obs/C2001G1/web.htm

     CK01G010  C2004 05 20.05916 15 24 49.51 +07 08 46.9          16.7 N      A03
     CK01G010  C2004 05 20.06793 15 24 49.35 +07 08 46.4          16.7 N      A03

I found that a 17 mag star USNO-A2.0 0900.08043417, 16.3 mag(R), 17.3
mag(B) exists at the exactly same position. So J. Moreno's observation
was not C/2001 G1 but the star.

I do not know about Maciej Reszelski's one.

But anyway, in conclusion, no ourbust of C/2001 G1.

Best regards,

--
Seiichi Yoshida
comet@...
http://www.aerith.net/

"The comet, examined in a close flyby in January by NASA's Stardust
spacecraft, has towering protrusions and steep-walled craters that
seem to defy gravity. More than a dozen jets of material shoot out
from its insides. Dust swirls around the comet in unexpectedly dense
pockets."

Strange Comet Unlike Anything Known
http://www.space.com/scienceastronomy/stardust_results_040617.html

Stowiz

>
> Strange Comet Unlike Anything Known
> http://www.space.com/scienceastronomy/stardust_results_040617.html
>

Really, I think rather more is being made of this object's appearance
than is called for. We have examined so few cometary nuclei close up
that we are not yet, by any means, in a position to say what is
unique or even slightly unusual in that regard! I certainly wasn't
surprised by P/Wild 2's appearance compared to P/Halley. P/Wild 2 has
come into the inner solar system extremely recently and I would
anticipate its surface to yet be very rugged, not particularly dark,
and largely devoid of settled dust or "soot". P/Halley, on the other
hand, with its eons of passages close to the Sun, would be expected
to show a worn-down, dark, and dusty surface very different from that
displayed by P/Wild 2.

John Bortle