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IAUC 7877: 2002cf; 2002cg; 2002cc; XTE J1908+094

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IAUC number

                                                  Circular No. 7877
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 2002cf IN NGC 4786
     B. Beutler and W. D. Li, University of California, report the
LOTOSS (cf. IAUC 7514) discovery of an apparent supernova on
unfiltered CCD images taken with the 0.8-m Katzman Automatic
Imaging Telescope (KAIT) on Apr. 13.3 (mag about 17.0) and 14.3 UT
(mag about 16.9).  SN 2002cf is located at R.A. = 12h54m31s.30,
Decl. = -06o51'24".8 (equinox 2000.0), which is 16".4 west and 9".4
north of the nucleus of NGC 4786.  A KAIT image taken on Mar. 12.3
showed nothing at this position (limiting mag about 19.0).

SUPERNOVA 2002cg IN UGC 10415
     Li also reports the LOTOSS discovery of an apparent supernova
in unfiltered KAIT images taken on Apr. 13.5 (mag about 17.8) and
14.4 UT (mag about 17.4).  SN 2002cg is located at R.A. =
16h29m00s.48, Decl. = +41o17'00".4 (equinox 2000.0), which is 1".2
east and 2".9 south of the nucleus of UGC 10415.  KAIT images taken
on Mar. 28.5 (limiting mag about 18.0) and 2001 Aug 16.3 (limiting
mag about 19.5) showed nothing at this position.

     T. Matheson, S. Jha, P. Challis, and R. Kirshner, Harvard-
Smithsonian Center for Astrophysics, report that a spectrum (range
370-750 nm) of SN 2002cc (cf. IAUC 7871), obtained by M. Calkins on
Apr. 10.19 UT with the Mt. Hopkins 1.5-m telescope (+ FAST
spectrograph), shows it to be a type-Ia supernova about a week past
maximum.  Narrow H-alpha emission from a separate exposure of the
nucleus indicates a recession velocity of 19 950 km/s for the host
galaxy.  Using this value, the supernova expansion velocity is
about 10 200 km/s for Si II (rest 635.5 nm).  The spectral-feature
age of the supernova (cf. IAUC 7774) was 9 +/- 2 days after maximum

XTE J1908+094
     P. Garnavich and J. Quinn, University of Notre Dame; and
P. Callanan, University College, Cork, report that images
(exposures 1500 s in $I$, 2100 s in $R$), obtained with the 1.8-m
Vatican Advanced Technology Telescope on Apr. 8 and 9 UT, show no
obvious new sources and no strongly varying sources within the
stated position error circles of this transient (IAUC 7856,
7873) when compared with the red Digitized Sky Survey.    No
sources (limiting mag I = 22.0; astrometric accuracy 0".2 via six
USNO-A2.0 stars) are found within 3" of the radio position (IAUC

                      (C) Copyright 2002 CBAT
2002 April 14                  (7877)            Daniel W. E. Green

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