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IAUC 8615: 2005gk, 2005gl; C/2005 P4, 2005 P5, 2005 P6, 2005 Q5

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IAUC number 

                                                  Circular No. 8615
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)
URL http://cfa-www.harvard.edu/iau/cbat.html  ISSN 0081-0304
Phone 617-495-7440/7244/7444 (for emergency use only)


SUPERNOVAE 2005gk AND 2005gl
     Further to IAUC 8610, T. Puckett reports the discovery of two
apparent supernovae on unfiltered CCD frames taken with the 0.60-m
automated supernova patrol telescope -- 2005gk in collaboration
with D. George and 2005gl with P. Ceravolo.

SN      2005 UT      R.A.  (2000.0)  Decl.   Mag.     Offset
2005gk  Oct. 4.31   3 08 16.05  - 4 12 00.2  18.5   5".5 E, 3".5 N
2005gl  Oct. 5.18   0 49 50.02  +32 16 56.8  18.2  29".8 E, 16".7 N

S. Nakano, Sumoto, Japan, reports the indepedent discovery of
2005gl by Y. Sano (Nayoro, Hokkaido) on thirty unfiltered CCD
frames taken around Oct. 12.57 UT with a 0.28-m f/6.1 Schmidt-
Cassegrain reflector, providing position end figures 50s.11, 55".9.
Nakano adds that Y. Kushida (Yatsugatake South Base Observatory,
0.40-m f/10.0 Schmidt-Cassegrain reflector + unfiltered CCD)
provides position end figures 50s.12, 56".1 for 2005gl from an
exposure taken by R. Kushida.  Additional approximate CCD
magnitudes:  SN 2005gk, 2004 Oct. 13 and 27, [20.0 (Puckett); 2005
Oct. 9.19, 18.5 (Puckett).  SN 2005gl in NGC 266, Sept. 3 and 10,
[20.0 (Puckett); Oct. 5, [18 (Sano); 12.14, 16.8 (D. George,
Ottawa, ON, 0.40-m reflector; via Puckett); 12.57, 16.7 (Sano);
12.632, 17.0 (Kushida).
     M. Ganeshalingam, M. R. Moore, and A. V. Filippenko,
University of California, Berkeley, report that inspection of CCD
spectra (range 330-1000 nm), obtained on Oct. 11 UT with the Shane
3-m telescope at Lick Observatory, shows that SN 2005gk is of type
II.  The P-Cyg profile of the broad H_alpha line is dominated by
the emission component.


COMETS C/2005 P4, 2005 P5, 2005 P6, 2005 Q5 (SOHO)
     The following four tailless Kreutz-sungrazing comets, found
on SOHO website images (cf. IAUC 8604), were all stellar in
appearance.  C/2005 P4 reached mag 7.6 at 12.2 solar radii on Aug.
11.611 UT.  C/2005 P5 reached mag about 8 at about 11 solar radii.
C/2005 P6 reached mag 7.7 at 11.9 solar radii on Aug. 14.321.
C/2005 Q5 reached mag 7.3 at 10.8 solar radii on Aug. 18.321.

 Comet       2005 UT       R.A.(2000)Decl.  Inst.  F    MPEC
 C/2005 P4   Aug. 11.071   9 01.4   +13 35   C3    TH   2005-T55
 C/2005 P5        12.638   9 09.7   +13 49   C3    HS   2005-T55
 C/2005 P6        14.029   9 16.2   +13 08   C3    HS   2005-T55
 C/2005 Q5        17.821   9 27.6   +12 00   C3    SF   2005-T55

                      (C) Copyright 2005 CBAT
2005 October 12                (8615)            Daniel W. E. Green

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