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

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                                                 Circular No. 6956Central Bureau for Astronomical TelegramsINTERNATIONAL ASTRONOMICAL UNIONMailstop 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.htmlPhone 617-495-7244/7440/7444 (for emergency use only)SUPERNOVA 1998cr IN PGC 57979     T. Puckett and A. Langoussis, Mountain Town, GA, report thediscovery of an apparent supernova (mag 17.6) on an unfiltered CCDframe taken with the Puckett Observatory 0.30-m automated supernovapatrol 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".5west and 7".5 south of the nucleus of PGC 57979.  The object wasalso present on CCD frames taken on June 29.10 at mag 17.5.  Theobject was not present on previous CCD frames taken on June 24.2(limiting mag 18.75).  The object does not appear on the PalomarSky Survey scans.  M. Richmond, Rochester Institute of Technology,reports that SN 1998cr was present on a 300-s R-band KAIT imagetaken on June 29.275 UT.SUPERNOVAE 1998ce, 1998ch, 1998ck     M. Phillips, Cerro Tololo Interamerican Observatory (CTIO),reports that he obtained spectroscopic typing of three supernovaewith the CTIO 4-m Blanco telescope.  SN 1998ce (cf.IAUC 6922) is atype-II event; its spectrum, obtained on June 27.05 UT, closelyresembles that of SN 1992H, 50 days after explosion (seeClocchiatti et al. 1996, A.J. 111, 1286).  SN 1998ch (cf.IAUC6917) is also of type II, and appears to be approximately the sameage as SN 1998ce; the spectrum of SN 1998ch was obtained on June27.07, and a spectrum of its host galaxy shows H-alpha emission ata 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 aftermaximum; a spectrum of its host galaxy, ESO 434-G20, yields z about0.038.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 1627-41Corrigendum.  OnIAUC 6950, line 5, for  May  read  June                      (C) Copyright 1998 CBAT1998 June 29                   (6956)            Daniel W. E. Green

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