Central Bureau for Astronomical Telegrams

Central Bureau for Astronomical Telegrams -- Image credits

IAUC 8591: 2005dp; Var STAR NEAR M27; 169P

The following International Astronomical Union Circular may be linked-to from your own Web pages, but must not otherwise be redistributed (see these notes on the conditions under which circulars are made available on our WWW site).

Read IAUC 8590  SEARCH Read IAUC 8592

View IAUC 8591 in .dvi, .ps or .PDF format.
IAUC number

                                                  Circular No. 8591
Central Bureau for Astronomical Telegrams
Mailstop 18, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
IAUSUBS@CFA.HARVARD.EDU or FAX 617-495-7231 (subscriptions)
URL http://cfa-www.harvard.edu/iau/cbat.html  ISSN 0081-0304
Phone 617-495-7440/7244/7444 (for emergency use only)

SUPERNOVA 2005dp IN NGC 5630
     S. Nakano, Sumoto, Japan, reports the discovery by Koichi
Itagaki (Teppo-cho, Yamagata, Japan) of an apparent supernova (red
mag 16.0) on unfiltered CCD images taken around Aug. 27.48 and
29.42 UT with a 0.60-m f/5.7 reflector.  The new object is located
at R.A. = 14h27m36s.62, Decl. = +41o15'15".0 (equinox 2000.0),
which is 1" west and 14" south of the center of NGC 5630.  Nothing
was visible at this location on images taken on 2002 May 2 and 2005
Aug. 5 (limiting mag 19.0).

     W. Renz, Karlsruhe, Germany, reports the CCD discovery of a
variable star situated in the outer portion of M27 by J. Hanisch
(Gescher, Germany) on unfiltered CCD images taken on about Aug.
18.0 UT (at mag about 15.8; position R.A. = 19h59m51s.29, Decl. =
+22o42'32".3, equinox 2000.0) and independently by H.-G. Lindberg
(Skultuna, Sweden) on an image taken on Aug. 18.9.  Renz also
forwards position end figures 51s.283, 32".13 obtained by D. Boyd
(Oxfordshire, U.K., 0.35-m reflector) from CCD frames taken on Aug.
21.92.  CCD magnitudes for the variable star (reported in part by
E. Waagen, AAVSO):  Aug. 16.937, 15.6 (N. Quinn, West Sussex, U.K.;
prediscovery; unfiltered); 21.916, V = 16.17 (Boyd); 21.917, I =
16.00 (Boyd); 21.935, V = 16.69 (D. Rodriguez, Madrid, Spain);
22.998, V = 16.16 (Boyd); 22.997, I_c = 15.82 (Boyd); 26.194-26.202,
R = 15.6 (J. E. McGaha, Tucson, AZ); 27.241, V = 15.6 (McGaha);
27.245, R = 15.8 (McGaha); 27.249, B = 14.9 (McGaha).  A. Henden,
AAVSO, writes that a likely progenitor with R_c about 22.5 has been
identified on co-added U.S. Naval Observatory images of M27 taken
in the early 1990s (limiting mag R_c about 26, but a difficult
measurement with the variable background and nearby brighter stars)
-- giving an amplitude of about 7 magnitudes, typical for a WZ-Sge-
type cataclysmic variable.  Renz and Henden add that 'superhump'
variations in brightness of about 0.3 mag with a period of about 82
min have been detected in photometric observations by T. Vanmunster
and B. Martin.

COMETS 169P/2002 EX$_{12}$ (NEAT), 170P/2005 M1 (CHRISTENSEN)
     Comet P/2002 EX_12 (cf. IAUC 8578; found in images dating back
to 1988) has been given the permanent numbering 169P, while comet
P/2005 M1 (cf. IAUC 8547; found in images dating back to 1997)
has been assigned the number 170P (MPC 54661).

                      (C) Copyright 2005 CBAT
2005 August 29                 (8591)            Daniel W. E. Green

Read IAUC 8590  SEARCH Read IAUC 8592

View IAUC 8591 in .dvi, .ps or .PDF format.

Our Web policy. Index to the CBAT/MPC/ICQ pages.

Valid HTML 4.01!