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IAUC 7955: 2002em; V445 Pup; C/2002 O6; 2002el

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IAUC number

                                                  Circular No. 7955
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 2002em IN UGC 3430
     M. Armstrong, Rolvenden, England, reports his discovery of an
apparent supernova (mag 18.0) on an unfiltered CCD image (limiting
mag 19.0) taken with a 0.35-m reflector on Aug. 16.07 UT in the
course of the U.K. Nova/Supernova patrol.  The new object was
confirmed at mag 18.0 on an image taken on Aug. 16.95, but it was
not present on Armstrong's images from 2001 Mar. 13 (limiting mag
19.0), 2002 Mar. 7 (limiting mag 19.5), and Apr. 6 (limiting mag
19.0), or on Palomar Sky Survey images taken in 1993 (limiting blue
mag 22.5) and 1996 (limiting red mag 20.8).  SN 2002em is located
at R.A. = 6h15m52s.30, Decl. = +64o25'49".1 (equinox 2000.0), or
approximately 17" east and 1" south of the center of UGC 3430.

     P. A. Woudt, University of Cape Town, reports the following
simultaneous J, H, and K_s photometry of V445 Pup, obtained at the
South African Astronomical Observatory, Sutherland, with the 1.4-m
IRSF telescope (+ SIRIUS):  Mar. 22.763 UT, H = 17.63 +/- 0.06, K_s
= 14.07 +/- 0.02; June 19.689, H = 18.09 +/- 0.12, K_s = 15.29 +/-
0.03.  V445 Pup was below the detection limit (mag 19.5) in J at
both epochs.  Woudt adds:  "The H-K_s color has changed
significantly over this period, from +3.56 +/- 0.06 to +2.80 +/-
0.12, and V445 Pup has become fainter in both photometric passbands.
One and a half years after outburst, V445 Pup is still shrouded in
a dense dust shell (see IAUC 7730)."

COMET C/2002 O6 (SWAN)
     Visual m_1 and coma-diameter estimates:  Aug. 4.76 UT, 6.2, 8'
(Y. Nagai, Yamanashi, Japan, 12x50 binoculars); 6.71, 6.2, 15' (S.
T. Rae, Port Ohope, New Zealand, 8x21 binoculars); 8.12, 6.3, 8'
(S. Baroni, Milan, Italy, 20x80 binoculars); 11.07, 6.0, 14' (K.
Hornoch, Lelekovice, Czech Republic, 10x80 binoculars); 13.11, 6.1,
11' (M. V. Zanotta, Laino, Italy, 7x42 binoculars); 15.11, 5.9, 11'

SUPERNOVA 2002el IN NGC 6986
     Corrigendum.  On IAUC 7954, line 5, for  Oct. 14,  read
Aug. 14,

                      (C) Copyright 2002 CBAT
2002 August 17                 (7955)            Daniel W. E. Green

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