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IAUC 6956: 1998cr; 1998ce, 1998ch, 1998ck; 1998S; SGR 1627-41

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                                                 Circular No. 6956
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)
BMARSDEN@CFA.HARVARD.EDU or DGREEN@CFA.HARVARD.EDU (science)
URL http://cfa-www.harvard.edu/iau/cbat.html
Phone 617-495-7244/7440/7444 (for emergency use only)


SUPERNOVA 1998cr IN PGC 57979
     T. Puckett and A. Langoussis, Mountain Town, GA, report the
discovery of an apparent supernova (mag 17.6) on an unfiltered CCD
frame taken with the Puckett Observatory 0.30-m automated supernova
patrol telescope on June 28.09 UT.  SN 1998cr is located at R.A. =
16h23m17s.25, Decl. = +37o12'47".5 (equinox 2000.0), which is 0".5
west and 7".5 south of the nucleus of PGC 57979.  The object was
also present on CCD frames taken on June 29.10 at mag 17.5.  The
object was not present on previous CCD frames taken on June 24.2
(limiting mag 18.75).  The object does not appear on the Palomar
Sky Survey scans.  M. Richmond, Rochester Institute of Technology,
reports that SN 1998cr was present on a 300-s R-band KAIT image
taken on June 29.275 UT.


SUPERNOVAE 1998ce, 1998ch, 1998ck
     M. Phillips, Cerro Tololo Interamerican Observatory (CTIO),
reports that he obtained spectroscopic typing of three supernovae
with the CTIO 4-m Blanco telescope.  SN 1998ce (cf. IAUC 6922) is a
type-II event; its spectrum, obtained on June 27.05 UT, closely
resembles that of SN 1992H, 50 days after explosion (see
Clocchiatti et al. 1996, A.J. 111, 1286).  SN 1998ch (cf. IAUC
6917) is also of type II, and appears to be approximately the same
age as SN 1998ce; the spectrum of SN 1998ch was obtained on June
27.07, and a spectrum of its host galaxy shows H-alpha emission at
a redshift z about 0.047, consistent with membership in Abell 3559.
The spectrum of SN 1998ck (cf. IAUC 6925), obtained on June 27.03,
shows this object to be a type-Ia supernova, about 18 days after
maximum; a spectrum of its host galaxy, ESO 434-G20, yields z about
0.038.


SUPERNOVA 1998S IN NGC 3877
     Additional CCD photometry by D. Hanzl, Brno, Czech Republic,
(cf. IAUC 6885, 6924):  June 2.904 UT, V = 15.15 +/- 0.05; 17.918,
V = 15.33 +/- 0.05, B-V = +0.81 +/- 0.05; 19.918, 15.45 +/- 0.03,
+0.7 +/- 0.2; 20.982, 15.40 +/- 0.08, -; 21.893, 15.43 +/- 0.03, -;
25.889, 15.38 +/- 0.06, +0.62 +/- 0.1.


SGR 1627-41
Corrigendum.  On IAUC 6950, line 5, for  May  read  June

                      (C) Copyright 1998 CBAT
1998 June 29                   (6956)            Daniel W. E. Green

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