LtE in CMO #263
From Dr P Clay SHERROD
© . . . . . . .
. . Sent:
Subject: A brief [unnerving]
update on 2002 NT7
If
your GO TOs on the computerized scope are not hitting
just right, or if the power source to your scope or CCD keeps fluctuating,
perhaps a reality check will put it all into perspective.
If
you have not been keeping up with the approaching Near Earth Object 2002 NT7,
then you might want to refresh (or humble) yourself a
bit.
Sky
and Telescope just today issued their weekly bulletin concerning this (and
others)
object and it is discussed a bit at:
http://www.arksky.org/cgi-bin/readnews.pl
or go to the main page (www.arksky.org)
and click onto Current News.
© . . . . . . . . .Sent:
Subject: ASO Comet Observations
A few comets
measured at early moonlight; good clear skies, but moonlight interfering from
east. Stellar ccd
limiting magnitude to about 17.6. The
rising gibbous moon stopped observing at
Complete
observations of the ASO Sky Patrol for current comets is found at www.arksky.org, or the
direct link at:
http://www.arksky.org/cgi-bin/comettable.pl
---------------------------
Comet
LINEAR - C2001 N2:
*2002
July 27.192 UT: m1 =14.79 ccd, Dia.=
7", DC =2/9, ...0.3m SCT/CCD...P.Clay Sherrod, (ASO,
and diffuse; strong moonlight to east interferes]
Comet
Linear -C/2000 WM1:
*2002
July 27.139 UT: m1 =15.01 ccd, Dia.= 0.2'; DC = 2/9,
...0.3m SCT/CCD...P.Clay Sherrod, (ASO,
Conway, Arkansas) [comet does NOT
show the coma extensions noted on previous night and appears noticeably
fainter; round and uniformly diffuse; moonlight possibly affecting mag. estimate]
Comet
Linear - C2001 K5:
*2002
July 27.215 UT: m1 = 13.95ccd, Dia.= 10", DC =
6/9, ...0.3m SCT/CCD...P.Clay Sherrod, (ASO,
Conway, Arkansas) [continued
short, bright and straight tail in PA 181d, 1.1' length; Comet is somewhat
brighter tonight with a slightly more distinct nuclear brightening than
previously noted; tail and coma maintain consistent brightness uniformity
across total expanse; moonlight possibly
affecting mag. estimate]
2001
Linear K5 image:
www.arksky.org/asoimg/linearK5_0727.jpg
Comet
57P du Toit-Neujmin-Delporte
*2002
July 27. 219 UT: m1 = 14.61 ccd, Dia.= 12", DC =
3/9....0.3m SCT/CCD...P.Clay Sherrod, (ASO,
Conway, Arkansas) [comet is
difficult in strong moonlight very close to east; round and diffuse with no
structure seen....slightly brighter than anticipated]
© . . . . . . .
. .Sent:
Subject: ASO Comet Observations -
A
few comets prior to near-full moonlight interfering
last night; stellar ccd limiting magnitude to about 17.1. Clouds and the rising gibbous moon stopped
interfered with some estimates as noted.
**ALSO
NOTE: confirmation attempts for new
object (comet)
2002 0 are included in this report.**
Complete observations of the ASO Sky
Patrol for current comets is found
at www.arksky.org, or the direct link at:
http://www.arksky.org/cgi-bin/comettable.pl
---------------------------
!!
Comet C/2002 O4 (new):
*2002
July 28.260 UT: m1 =11.99 ccd, Dia.=
14", DC =5/9, ...0.3m SCT
/CCD...P.Clay Sherrod, (ASO,
with tail length at 0.4' in PA 191d; the comet is very
bright and large, much more so than expected] Comet was astrometrically
measured at:
R.A.
23h 21.192m
DEC
+41d 44.853m
[image posted at www.arksky.org]
------------------------------
Comet
LINEAR - C2002 H2:
*2002
July 28.177 UT: m1 =15.51 ccd, Dia.=
8", DC = 4/9, ...0.3m SCT /CCD...P.Clay Sherrod,
(ASO,
-----------------------------
Comet
Linear - C2001 K5:
*2002
July 28.205 UT: m1 =13.97 ccd, Dia.= 8", DC =
5/9, ...0.3m SCT/CCD...P.Clay Sherrod, (ASO,
Conway, Arkansas) [continued
short, bright and straight tail in PA 181d, 0.7' length; comet maintaining
uniform brightness and structure, strong moonlight far to SE]
-------------------------------
Comet
57P du Toit-Neujmin-Delporte:
*2002
July 28.193 UT: m1 =14.98 ccd, Dia.=
8", DC =2/9, ...0.3m SCT /CCD...P.Clay Sherrod, (ASO,
-------------------------------------
Comet
29P Schwassmann-Wachmann:
*2002
July 28.241 UT: m1 =14.29 ccd, Dia.=
12", DC = 2/9, ...0.3m SCT /CCD...P.Clay
Sherrod, (ASO,
------------------------------------
Comet
Ikeya-Zhang c/2002 C1
*2002
July 28.169 UT: m2* = 13.91 ccd, Dia.= 1.1, DC = 7/9, ...0.3m
SCT/CCD...P.Clay Sherrod, (ASO, Conway, Arkansas) [extension
in PA ~322d not seen tonight; second fainter tail imaged at PA 135 deg, 1.0'
length; coma is very large and transparent with nucleus, m2 = 13.91(ccd);
nucleus appears less distinct tonight]
© . . . . . . .
. .Sent:
Subject: ASO Comet observations -
Beautiful night here in
Complete observations of the ASO Sky
Patrol for current comets is
found at www.arksky.org, or the direct link at:
http://www.arksky.org/cgi-bin/comettable.pl
---------------------------
Comet
Hoenig - C2002 O4:
*2002
July 26.143 UT: m1 =14.29 ccd, Dia.= 7", DC
=2/9, ...0.3m SCT/CCD...P.Clay Sherrod, (ASO,
Conway, Arkansas) [Comet is quite
spectacular, with a vivid fanned tail from PA 180 to 192 deg, 1.8' length; coma
is highly concentrated in brightness relative to tail; no nuclear center noted.]
[image attached or found at:
http://www.arksky.org/cgi-bin/comettable.pl
]
Comet
57P du Toit-Neujmin-Delporte:
*2002
Aug. 02.260 UT: m1 = 14.98ccd, Dia.=
8-9", DC = 5/9, ...0.3m SCT /CCD...P.Clay
Sherrod, (ASO,
© . . . . . . .
. .Sent:
Subject: Correction on ASO C.2002 O4
Hoenig
Sorry,
but I realized after I sent that the leading data for Comet Hoenig
2002 O4 was incorrect....it should read as follows: (quite a difference in the formatted
data that I copied.....).
NEW:
Comet
Hoenig - C2002 O4:
*2002
Aug. 02.302 UT: m1 = 12.01ccd, Dia.=
0.9', DC =5/9, ...0.3m SCT /CCD...P.Clay Sherrod, (ASO,
with a vivid fanned tail from PA 180 to 192 deg, 1.8'
length; coma is highly concentrated in brightness relative to tail; no nuclear
center noted.]
[image attached or found at:
http://www.arksky.org/cgi-bin/comettable.pl
]
© . . . . . . .
. .Sent:
Subject: C/2002 Hoenig
and 57P - du Toit-Neujmin-Delporte
A
few comets from the past two nights (August 3 & 4, U.T.),
including 57P and 2002 O4 Hoenig; stellar ccd limiting magnitude to about 17.1. Considerable humidity and moisture in the air
is limiting quality ccd measurements.
Complete
observations of the ASO Sky Patrol for current comets is found at
www.arksky.org, or the direct link at:
http://www.arksky.org/cgi-bin/comettable.pl
---------------------------
Comet
Hoenig - C2002 O4:
*2002
Aug. 03.294 UT: m1 = 11.87ccd, Dia.=
1.2', DC =5/9, ...0.3m SCT
/CCD...P.Clay Sherrod, (ASO,
*2002
Aug. 04.317. UT: m1 =11.91 ccd, Dia.= 1.0', DC = 5/9,
...0.3m SCT/CCD...P.Clay Sherrod, (ASO,
Conway, Arkansas) [Comet is much
more condensed tonight with a clear though not well defined nucleus; tail
appears less fanned than on previous nights, in PA 102 deg, for 1.7' length;
tail appears to be more diffuse and less defined; fog and haze]
{image is available at the above link}
----------------------------------
Comet
du Toit-Neujmin-Delporte
57P:
*2002
Aug. 03.274. UT: m1 =14.61 ccd, Dia.=
10", DC = 4/9, ...0.3m SCT/CCD...P.Clay Sherrod,
(ASO,
*2002
Aug. 04.236. UT: m1 = 14.86ccd, Dia.=
14", DC = 6/9, ...0.3m SCT/CCD...P.Clay Sherrod,
(ASO,
© . . . . . . .
. .Sent:
Subject: Preliminary on 29P Schwassmann-Wachmann
Wow
- quite a nice show going on with 29P at this time (August 5, about
06:00 UT);
the comet is definitely in another unusual outburst and ccd photometry reveal
it to be mag. 13.99 (0.31m SCT)
and visually in a 10cm Televue refractor the comet is
showing a splendid 11.6 magnitude.
The
best description of this (an image will follow soon at ASO)
new appearance of the comet is distinctly as that of a "cross-cut
egg" with a fuzzy stellar nucleus "yolk" surrounded by a quite
oval-appearing bright nucleus, with a very distinct peripheral boundary.
This
comet definitely bears watching. More
will be posted later this morning at www.arksky.org.
© . . . . . . .
. .Sent:
Subject: ASO Comets -
NOTE: Schwassmann-Wachmann
showing nice outburst; image indicates some possible spiral pattern to
coma. Sky conditions fair to good this
morning with some high haze early. Stellar limiting magnitude 18.7.
Complete observations of the ASO Sky
Patrol for current comets is
found at www.arksky.org, or the direct link at:
http://www.arksky.org/cgi-bin/comettable.pl
---------------------------
Comet
Hoenig - C2002 O4:
*2002
Aug. 05.283 UT: m1 = 10.66 ccd, Dia.=
0.9', DC = 4/9, ...0.3m SCT/CCD...P.Clay Sherrod, (ASO,
{....image found at www.arksky.org if
not attached....}
Comet
57P du Toit-Neujmin-Delporte:
*2002
Aug. 05. UT: m1 =14.92 ccd, Dia.= 8-9" DC = 5/9,
...0.3m SCT /CCD...P.Clay Sherrod, (ASO,
Conway, Arkansas) [Comet is
maintaining a diffuse and round coma with only a slight degree of central
condensation; some suggestion of short extension in PA 138d; fair skies with
some haze]
Comet
29P Schwassmann-Wachmann:
*2002
Aug. 05.289 UT: m1 = 11.6, Dia.= 1.3' , DC = 7/9,
...10cm Refra....P.Clay
Sherrod, (ASO,
Conway, Arkansas) [A most unusual
sight; appearance of the comet is distinctly as that of a "cross-cut
egg" with a fuzzy stellar nucleus "yolk" surrounded by a quite
oval-appearing bright coma, with a very distinct peripheral boundary; m2* =
13.99 (ccd,
0.31m SCT)
nuclear condensation, and strong elongation in PA 220deg.]
{....image found at www.arksky.org if
not attached....}
Comet
C/2002 K4 (NEAT):
*2002
Aug. 05.211 UT: m1 = 15.99ccd, Dia.= 7" DC =
5/9, ...0.3m SCT /CCD...P.Clay Sherrod, (ASO,
Conway, Arkansas) [A very
difficult object to measure photometrically due to
dense star field and proximity of numerous stars to comet; very compact, nearly
stellar with indication of short tail in PA 180d.]
Comet
Linear - C2001 K5:
*2002
Aug. 05.203 UT: m1 =14.23 ccd, Dia.=
10", DC = 5/9, ...0.3m SCT/CCD...P.Clay Sherrod,
(ASO,
Comet
McNaught-Hartley - C/1999 T1:
*2002
Aug. 05.203 UT: m1 =17.37 ccd, Dia.=
4", DC = 8/9, ...0.3mSCT/CCD...P.Clay Sherrod, (ASO,
© . . . . . . .
. .Sent:
Subject: Increase in Perseid meteors!
Just
a reminder to everyone that the Perseid meteor shower
will peak one week from tonight, on the evening of August 12 (Monday
night)
and throughout the dark morning hours of Tuesday, August 13. A complete Guide to observing the meteors and
what may be in store is posted at the Arkansas Sky Observatory site home
page.....
During
the past week as we have been searching out faint comets, I have been
serendipitously seeing up to 12-15 comets per hour from the Perseus
radiant. All of these have been very swift fireballs with trains easily traced
back to the location of the rising shower in the northeast morning sky. I am sure that there are at
least that same number of fainter meteors that we are not picking up
on....
I
have noted a marked increase in the meteors just in the past days, notable on
Aug. 3, 4, and 5 U.T., and all coming in much greater numbers AFTER 2:30 a.m.
local time (07:30
U.T.)
when the radiant is fairly high in the sky.
Nearly
all have been seen almost directly overhead.
Magnitudes have been on the order of -1 to -3 for all.
Remember,
I am predicting (under very dark and ideal skies) as
many as "80-90 meteors per hour" around
See
the ASO complete summary and suggested observing tips on the ASO Home page (
www.arksky.org ) and click the PERSEID LINK at the top of the
page to access our complete guide.
© . . . . . . .
. .Sent:
Subject: 29P in outburst / continued
development of 2002-O4
Not
a particularly good night with heavy inversion and haze set in; much humidity
and moisture in the air; stellar limiting magnitude at zenith is only
17.0. However, 29P in outburst is still
and incredibly interesting sight!
**
COMET 2002 O4 - Note in image the multiple tail spikes emanating from coma.
Complete observations of the ASO Sky
Patrol for current comets is
found at www.arksky.org, or the direct link at:
http://www.arksky.org/cgi-bin/comettable.pl
---------------------------
Comet
57P du Toit-Neujmin-Delporte:
*2002
Aug. 06.234 UT: m1 =14.93 ccd, Dia.=
7", DC =3/9, ...0.3m SCT /CCD...P.Clay Sherrod, (ASO,
Comet
29P Schwassmann-Wachmann :
*2002
Aug. 06. UT: m1 =11.1*, Dia.=
0.6' DC = 8/9, ...0.3m
SCT
(visual)...P.Clay Sherrod, (ASO,
{....image attached....or available
at above link}
Comet
2002 O4 - Hoenig:
*2002
Aug. 06.322 UT: m1 = 9.7, Dia.= 0.8' DC = 3/9,
...10cm refr....P.Clay
Sherrod, (ASO,
Conway, Arkansas) [Distinct tail,
now quite straight and not fanned as before, PA 215d, 2.3' length; at least 3
spikes emanating in tail PA from coma (0.31m SCT/ccd);
no sign of nucleus; coma is very concentrated and bright.]
{....image attached....or available
at above link}
© . . . . . . .
. .Sent:
Subject: ASO Comets
A
few comets prior to near-full moonlight interfering
last night; stellar ccd limiting magnitude to about 16.7. Clouds, lightening and the rising moon
stopped observing at
Complete observations of the ASO Sky
Patrol for current comets is
found at www.arksky.org, or the direct link at:
http://www.arksky.org/cgi-bin/comettable.pl
---------------------------
Comet
Hoenig - C2002 O4:
*2002
July 30.212 UT: m1 =12.08* ccd, Dia.=
21", DC = 7/9, ...0.3m SCT/CCD...P.Clay Sherrod,
(ASO,
Conway, Arkansas) [*ccd
measurement m2 = 13.22, with very strong concentration; otherwise coma is
uniformly faint across and circular;
continued short, bright and straight tail in PA 195d, 1.7' length; comet
maintaining uniform brightness and structure, virtually unchanged from previous
observations; moonlight to east possibly
affecting mag. estimate]
(image attached or found at www.arksky.org
/ under "Comet Patrol" tables)
Comet
Schwassman-Wachmann
*2002
July 30.220 UT: m1 = 15.03ccd, Dia.=
25", DC =2/9, ...0.3m SCT /CCD...P.Clay Sherrod,
(ASO,
Comet
duToit-Neujmin-Delporte:
*2002
July 30.189 UT: m1 = 14.63ccd, Dia.=
15", DC = 5/9, ...0.3m SCT /CCD...P.Clay
Sherrod, (ASO,
Comet
Linear - C2001 K5:
*2002
July 30.181 UT: m1 =14.55 ccd, Dia.= 10", DC =
6/9, ...0.3m SCT/CCD...P.Clay Sherrod, (ASO,
Conway, Arkansas) [bright and
straight tail in PA 183d, 0.5' length; comet maintaining uniform brightness and
structure, virtually unchanged from previous observations; moonlight possibly affecting mag. estimate]
----------------------------------------
A
few comets prior to near-full moonlight interfering
last night; stellar ccd limiting magnitude to about 17.1. Clouds and the rising gibbous moon stopped
observing at
Complete observations of the ASO Sky
Patrol for current comets is
found at www.arksky.org, or the direct link at:
http://www.arksky.org/cgi-bin/comettable.pl
---------------------------
Comet
Hoenig - C2002 O4:
*2002
July 30.203 UT: m1 = 11.13 (*)ccd, Dia.=
0.3', DC =7/9, ...0.3m SCT/CCD...P.Clay Sherrod, (ASO,
{image attached or see above links for
Comet
NEAT -C/2002 K4:
*2002
July 31.245 UT: m1 = <17.48 ccd, ...0.3m
SCT/CCD...P.Clay Sherrod, (ASO, Conway, Arkansas) [three
images taken @30-min intervals and blinked to magnitude 17.48 stellar; no
object demonstrating any motion over 65 minutes was found under exceptionally
dark sky]
Comet
du Toit-Neujmin-Delporte -
57P:
*2002
July 31.208 UT: m1 =14.76 ccd, Dia.=
10", DC = 5/9, ...0.3m SCT/CCD...P.Clay Sherrod,
(ASO,
© . . . . . . . .Sent:
Subject: Another New Comet NEAT
C2002 O5
ANOTHER
NEW COMET...
For
those with larger scopes and/or ccd equipment, we have
yet another new comet to add to the newly discovered Comet Hoenig
2002 O4.
This
one - C/2002 O5 (NEAT) - was found by
the NEAT program (JPL) and confirmed
last night (July
31). At present it is about magnitude 15-16 and
orbital elements have not been yet issued.
This discovery was just announced after confirmation via IAU circular
7942.
It
is presently in the constellation of Ophiuchus.
For
complete details see the Arkansas Sky website:
www.arksky.org under "Current
News".
© . . . . . . .
. Sent:
Subject: New comets 2002 O4 and O5 /
others
New
Comets 2002 O4 and 2002 O5; stellar ccd limiting
magnitude to about 18.6. The rising
gibbous moon stopped observing at
Note that 2002 O5 appears nearly
stellar, confirmed via motion over 42-minute span; very difficult object with
strong m2.
Complete observations of the ASO Sky
Patrol for current comets is
found at www.arksky.org, or the direct link at:
http://www.arksky.org/cgi-bin/comettable.pl
---------------------------
Comet
Hoenig - C2002 O4:
*2002
Aug. 01.246 UT: m1 = 10.9, Dia.=
2.2', DC =7/9, ...10cm Refr....P.Clay
Sherrod,
(ASO,
{....image at above link....}
Comet
C/2002 O5 NEAT:
*2002
Aug. 01.221 UT: m1 = 15.88ccd*, Dia.=
4", DC = 8/9, ...0.3m SCT /CCD...P.Clay Sherrod,
(ASO,
{....image at above link....}
Comet
McNaught-Hartley C/1999 T1:
*2002
Aug. 01.268 UT: m1 =16.78 ccd, Dia.=
6", DC = 2/9, ...0.3m SCT/CCD...P.Clay Sherrod, (ASO,
Comet
Linear - C2001 K5:
*2002
Aug. 01.251 UT: m1 =13.75 ccd, Dia.=
9", DC = 5/9, ...0.3m SCT/CCD...P.Clay Sherrod, (ASO,
Comet
57P du Toit-Neujmin-Delporte
*2002
Aug. 01.215 UT: m1 = 14.95 ccd, Dia.=
9", DC = 3/9, ...0.3m SCT/CCD...P.Clay Sherrod, (ASO,
----------------------------------------
Only
a couple of comets tonight including a remarkable 29P Schwassmann
Wachmann....the comet is increasing in brightness,
showing a very strong nucleus and very bright coma....slight tail is now
indicated.
IMPORTANT....note
tiny diffuse object exhibiting same angular motion as 29P in three-hour period,
indicated by arrow.
Conditions
were very unfavorable, with ccd limiting mag. only to 17.1 stellar.
Complete observations of the ASO Sky
Patrol for current comets is
found at www.arksky.org, or the direct link at:
http://www.arksky.org/cgi-bin/comettable.pl
---------------------------
Comet
57P du Toit-Neujmin-Delporte:
*2002
Aug. 07.328 UT: m1 = 15.25ccd, Dia.=
5", DC =2/9, ...0.3m SCT /CCD...P.Clay Sherrod, (ASO,
multiple imaging was done to confirm comet,
nearly stellar; high moisture and haze in air]
Comet
Hoenig - C2002 O4:
*2002
Aug. 07.342 UT: m1 = 9.5, Dia.=
1.7', DC = 6/9, ...10cm refr visual...P.Clay Sherrod, (ASO,
large condensation;
with high haze and increasing clouds.]
Comet
29P Schwassmann-Wachmann
*2002
Aug. 07.333 UT: m1 = 11.94ccd*, Dia.= 1.8', DC = 8/9,
...0.3m SCT/CCD...P.Clay Sherrod, (ASO,
Conway, Arkansas) [A fanned tail,
182 to 205deg, about 1.1 length is now noted on this spectacular comet; very
intense coma with clearly distinct nucleus (*m2=14.03;
considerable irregular detail, perhaps outgassing
jets, are seen on W perimeter of comet; NOTE: arrow on image indicates diffuse
object imaged on seven-set sequence demonstrating SAME motion as 29P; object is
not stellar]
{image attached or available at
www.arksky.org "Comet Patrol" link.....}
----------------------------------------
An incredible view of the outburst
of 29P tonight, as well as reports of C/2002 O4 and 57P and others.
Sky conditions near perfect, with stellar limiting magnitude at
18.8. 29P continues an incredible show!
Complete observations of the ASO Sky
Patrol for current comets is
found at www.arksky.org, or the direct link at:
http://www.arksky.org/cgi-bin/comettable.pl
---------------------------
Comet
LINEAR - C2002 O5:
*2002
Aug. 08.198 UT: m1 =16.59ccd, Dia.=
11", DC =4/9, ...0.3m SCT
/CCD...P.Clay Sherrod, (ASO,
diffuse with possible extension in PA 135d.]
Comet
Hoenig - C2002 O4:
*2002
Aug. 08.302 UT: m1 =10.73ccd,
Dia.= 2.1', DC =5/9, ...0.3m SCT
/CCD...P.Clay Sherrod, (ASO,
{.....image attached or found at
above links....}
Comet
LINEAR - C/2000 WM1:
*2002
Aug. 08.188 UT: m1 =15.56 ccd, Dia.= 13" DC =
2/9, ...0.3m SCT /CCD...P.Clay Sherrod, (ASO,
Conway, Arkansas) [A very faint
yet large diffuse patch now; no condensation nor sign of tail....a bit extended
on S. edge; excellent deep sky conditions]
Comet
LINEAR - C2001 K5:
*2002
Aug. 08.171 UT: m1 =14.37ccd, Dia.=
12", DC =4/9, ...0.3m SCT /CCD...P.Clay Sherrod,
(ASO,
{......image attached or found at
above links.....}
Comet
57P Du Toit-Neujmin-Delporte:
*2002
Aug. 08.247 UT: m1 =14.76ccd, Dia.=
15", DC = 3/9, ...0.3m SCT/CCD...P.Clay Sherrod,
(ASO,
Comet
29P Schwassmann-Wachmann
*2002
Aug. 08.281UT: m1 =
12.1*ccd, Dia.= 1.2' x 1', DC = 8/9,
...0.3m SCT/CCD...P.Clay Sherrod, (ASO,
{...image attached or at links
above....}
Comet
C2001 K3 - Skiff:
*2002
Aug. 08.332 UT: m1 =17.09ccd, Dia.=
6", DC = 2/9, ...0.3m SCT/CCD...P.Clay Sherrod, (ASO,
© . . . . . . .
. .Sent:
Subject: ccdOBS
- ASO comets
A
few comets including the new C/2002 P1, which was nearly a magnitude fainter
than early predictions provide; very small angular motion to this comet.
Complete observations of the ASO Sky
Patrol for current comets is
found at www.arksky.org, or the direct link at:
http://www.arksky.org/cgi-bin/comettable.pl
---------------------------
Comet
- C2002 P1:
*2002
Aug. 09.325 UT: m1 = 16.82ccd, Dia.=
3", DC =8/9, ...0.3m SCT /CCD...P.Clay Sherrod, (ASO,
Comet
NEAT - C2002 O5:
*2002
Aug. 09.213 UT: m1 = 17.65ccd, Dia.=
4-5", DC =2/9, ...0.3m SCT /CCD...P.Clay
Sherrod, (ASO,
Comet
du Toit-Neujmin-Delporte
57P:
*2002
Aug. 09.242 UT: m1 =15.45 ccd, Dia.=
16" DC = 2/9, ...0.3m SCT /CCD...P.Clay Sherrod,
(ASO,
Comet
Schwassmann-Wachmann 29P:
*2002
Aug. 09. UT: m1 = 13.31ccd (*), Dia.= 1.4', DC = 7/9, ...0.3m SCT/CCD...P.Clay
Sherrod, (ASO,
Conway, Arkansas) [Continued
flattened coma in the NNW 1/3, clearly delineated; flaring to opposite side
much more pronounced tonight; coma appears very large with very diffuse
perimeter and concentrated center (*m2 = 14.04ccd),
but nucleus is LESS pronounced than on previous nights; high haze]
Comet
Hoenig C/2002 O4:
*2002
Aug. 09.302 UT: m1 = 10.34 (*), Dia.= 2.5', DC = 6/9,...10cm refr....P.Clay Sherrod, (ASO,
concentrated with distinct nucleus, (*)m2
= 12.07(ccd)
moderate Light pollution, haze]
© . . . . . . . .Sent:
Subject: ccdOBS
- Comets/ ASO ,
Comet
observations from this morning under very hazy skies with heavy inversion over
area; stellar limiting magnitude = 17.6 ccd at zenith.
Comets
29P and 2002 O4 continue to be very nice objects with visible changes nightly.
Complete observations of the ASO Sky
Patrol for current comets is
found at www.arksky.org, or the direct link at:
http://www.arksky.org/cgi-bin/comettable.pl
---------------------------
Comet
2002 O4 - Hoenig:
*2002
Aug. 10.UT: m1 = 9.9ccd, Dia.=
1.1', DC =5/9, ...10cm refr....P.Clay
Sherrod, (ASO,
{....image attached or found at above
links....}
Comet
du Toit-Neujmin-Delporte 57P:
*2002
Aug. 10.230 UT: m1 = 15.49ccd, Dia.=
9" DC = 2/9, ...0.3m SCT /CCD...P.Clay Sherrod, (ASO,
Comet
Linear - C2001 K5:
*2002
Aug. 10.228 : m1 = 14.43ccd, Dia.= 11", DC =
549, ...0.3m SCT/CCD...P.Clay Sherrod, (ASO,
Conway, Arkansas) [continued
short, bright and straight tail in PA 182d, 1.1' length; comet maintaining
uniform brightness and structure, virtually unchanged from previous
observations; high haze and comet low to
west]
Comet
Schwassmann-Wachmann 29P:
*2002
Aug. 10.245 UT: m1* = 11.71ccd, Dia.=
2.4', DC = 8/9, ...0.3m SCT/CCD...P.Clay Sherrod, (ASO,
{image attached or found at above
links....}
© . . . . . . .
. .Sent:
Subject: ccd
Obs - ASO Comets,
Only
57P and C/2002 O4 tonight as heavy haze moved in about
Complete observations of the ASO Sky
Patrol for current comets is
found atwww.arksky.org, or the direct link at:
http://www.arksky.org/cgi-bin/comettable.pl
---------------------------
Comet
2002 O4 - Hoenig:
*2002
Aug. 11.288 UT: m1 = 9.7, Dia.=
12', DC =4/9, ...10cm refr, (ASO,
Comet
57P du Toit-Neujmim-Delporte:
*2002
Aug. 11.280UT: m1 =14.92 ccd, Dia.= 5" DC = 2/9,
...0.3m SCT/CCD...P.Clay Sherrod, (ASO,
Conway, Arkansas) [Comet is fading
and now is very small; still diffuse and round against the star field, but a
difficult object.]
© . . . . . . .
. .Sent:
Subject: Charts for 2002 NY40
Saturday
For
those of you planning to image or observe the spectacular flyby of NEO 2002
NY40, there is an updated article about this event on the ASO website (
www.arksky.org )
which I posted this morning, but ALSO I just ran across some fantastic charts
prepared by Roger Sinnott, Senior Editor of Sky and Telescope
posted at:
http://skyandtelescope.com/graphics/ChartB.pdf
(this is the chart for
Note
the wonderful track it is going to take just below the bright constellation of Lyra....this should be a very fine evening, skies
permitting!
© . . . . . . .
. .Sent:
Subject: YOUR ephemeris for 2002 NY
40
I
am being deluged with requests for positions during the close pass Saturday
night, Sunday morning Aug. 17-18, of the NEO 2002 NY40. There is a very nice way for you to customize
your own location very precisely and provide an hourly, 15-minute, 10-minute or
even 1-minute interval very accurate ephemeris of this object.....
Best
advice is to go to:
http://ssd.jpl.nasa.gov/cgi-bin/eph
and
enter either your city or exact coordinates if known under the Observer
Location area; next enter under "TIME SPAN" what increments of time (in
Universal Time) that you wish for the ephemeris
generator to provide positions for you....then go to "TARGET" and
select "Small Body" at which time you want to enter "2002
NY40" (no
quotes)
and it will generate an ephemeris for whatever time interval you select (you
can get 5-minute intervals, 1-hour, etc.....highly recommend 10-min. intervals
as this Near Earth Object will be trucking across the sky so fast that you will
be able to actually "see it move" in the eyepiece or on film.
Best
of luck and observing!
© . . . . . . .
. .Sent:
Subject: 92P Sanguin
A
quick post regarding 92P Sanguin.....the Harvard
Observable Comets ephemeris on this one gives it a magnitude of about 15.7 at
this time....we were pleasantly surprised this morning to find this fine comet
at magnitude 14.65 (ccd) and much
brighter and larger than anticipated.
No tail, but a very nice uniformly bright coma. Details:
Comet
92P Sanguin:
*2002
August 17.295 UT: m1 =14.65 ccd, Dia.= 11" DC = 839,
...0.3m SCT/CCD...P.Clay Sherrod, (ASO,
We
will likely post an image of this nice comet later on the ASO site.....
© . . . . . . .
. .Sent:
Subject: ccdComets
ASO -
A
very clear night following passage of a cold front; however humidity quite
high; stellar limiting magnitude at zenith ccd = 18.3.
Complete
observations of the ASO Sky Patrol for current comets is found at
www.arksky.org, or the direct link at:
http://www.arksky.org/cgi-bin/comettable.pl
---------------------------
Comet
C/2002 O4 Hoenig:
*2002
August 17.305 UT: m1 =9.94 ccd, Dia.=
0.6', DC =7/9, ...0.3m SCT /CCD...P.Clay Sherrod, (ASO,
{......image available at above
link......}
Comet
57P du Toit-Neujmin-Delporte :
*2002
August 17.229 UT: m1 =15.23 ccd, Dia.= 11", DC =5/9, ...0.3m SCT /CCD...P.Clay
Sherrod, (ASO,
Comet
29P Schwassmann-Wachmann:
*2002
August 17.236 UT: m1 =12.3 *ccd, Dia.= 0.7' irreg., DC = 8/9, ...0.3m SCT/CCD...P.Clay Sherrod, (ASO,
stellar-like nucleus (*m2 = 13.39)
with considerable irregularity in coma dimensions and brightness. The truncated NW 1/3 that had been previously
noted in images was not seen despite excellent conditions]
Comet
92P Sanguin:
*2002
August 17.295 UT: m1 =14.65 ccd, Dia.= 11" DC = 3/9,
...0.3m SCT/CCD...P.Clay Sherrod, (ASO,
Comet
1999 T1 McNaught-Hartley:
*2002
August 17.295 UT: m1 =16.68 ccd, Dia.= 3-4" DC =
8/9, ...0.3m SCT/CCD...P.Clay Sherrod, (ASO,
30-minute apparent motion at
predicted position; stellar appearing and very difficult, small.]
Comet
NEAT - P/2002 08:
*2002
August 17.287 UT: m1 =18.03 ccd, Dia.= 3-4", DC = 5/9, ...0.3m SCT/CCD...P.Clay Sherrod, (ASO,
Comet
C/2001 RX14 (LINEAR)
*2002
August 17. 344 UT: m1 = 14.23 ccd, Dia.= 16"*, DC = 2/9, ...0.3m SCT/CCD...P.Clay Sherrod, (ASO,
P Clay SHERROD (