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IAUC 8634: C/2005 W3; 2005kl-2005ku

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                                                  Circular No. 8634
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
Mailstop 18, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
IAUSUBS@CFA.HARVARD.EDU or FAX 617-495-7231 (subscriptions)
CBAT@CFA.HARVARD.EDU (science)
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Phone 617-495-7440/7244/7444 (for emergency use only)


COMET C/2005 W3 (KOWALSKI)
     Richard Kowalski reports a comet discovery on Catalina Sky
Survey 0.68-m Schmidt images (discovery observation tabulated below).
Coma diameters and tail lengths from CCD images:  Nov. 25.32 UT,
about 20", -- in p.a. about 280 deg (Kowalski); 25.4, 10" (well-
condensed), 20" in p.a. 280-290 deg (E. J. Christensen, Mt. Lemmon
1.5-m reflector; four co-added 30-s frames); 26.3, -- (diffuse,
extended), about 20" toward the west-northwest (J. G. Ries,
McDonald Observatory 0.76-m reflector); 27.1, 6" (concentrated),
14" (straight, broad, 8" wide) in p.a. 305 deg (P. Birtwhistle,
Great Shefford, U.K., 0.40-m reflector).  The available astrometry
(including prediscovery NEAT observations from Nov. 24),
preliminary parabolic elements (T = 2005 Apr. 22.927 TT, q =
2.68255 AU, Peri. = 155.860 deg, Node = 220.463 deg, i = 21.366 deg,
equinox 2000.0), and an ephemeris appear on MPEC 2005-W72.

     2005 UT             R.A. (2000) Decl.      Mag.   Observer
     Nov. 25.31896    5 02 28.03   + 6 52 30.0  18.2   Kowalski


SUPERNOVAE 2005kl-2005ku
     The discoveries of twelve supernovae have been reported:
2005kl by M. Migliardi (from unfiltered CROSS CCD images; cf. IAUC
7373, 8588; via A. Dimai, Cortina d'Ampezzo, Italy), 2005km by J.
Burket and W. Li (LOSS/KAIT; cf. IAUC 8632), and 2005kn-2005ku by
J. Frieman on behalf of the Sloan Digital Sky Survey II
collaboration (all found at mag > 20.4, with 2005kt and 2005ku
predicted to peak around now at g = 18.2 and 17.5, respectively;
details given on CBET 304).

SN      2005 UT      R.A.  (2000.0)  Decl.    Mag.     Offset
2005kl  Nov. 22.14  12 24 35.68  +39 23 03.5  14.6  6" W, 4" N
2005km  Nov. 22.52  11 20 48.72  +32 17 25.2  17.5  3".5 E, 1".0 N
2005kt  Nov.  7      1 10 58.05  + 0 16 34.1  20.5     --
2005ku  Nov. 10     22 59 42.61  - 0 00 49.3  20.7     --

Nothing is visible at the location of 2005kl on Palomar Sky Survey
infrared, red, and blue plates.  Additional approximate magnitudes
for 2005kl in NGC 4369:  2003 May 5, [18.5; 2005 Nov. 23.15 UT,
14.7.  Additional KAIT magnitudes for 2005km in UGC 6356:  Mar.
17.20, [19.5; Nov. 23.54, 17.3.  SNe 2005kr and 2005ks are type-
Ib/c supernovae with broad lines similar to that seen in 1998bw;
the rest appear to be type-Ia supernovae except for type-Ic
supernova 2005kl (cf. CBET 305, 306).

                      (C) Copyright 2005 CBAT
2005 November 27               (8634)            Daniel W. E. Green

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