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IAUC 6945: 1998cd; 1998 KY26; SGR 1627-41; N Sgr 1998

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                                                 Circular No. 6945
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 1998cd IN ANONYMOUS GALAXY
     A. V. Filippenko, D. C. Leonard, and M. Modjaz, University of
California at Berkeley; and R. G. Eastman, Lawrence Livermore
National Laboratory, report that CCD spectra  (range 320-1000 nm)
obtained on June 18 UT with the Shane 3-m reflector at Lick
Observatory show that SN 1998cd (cf. IAUC 6909) is of type Ia,
roughly 6 weeks past maximum brightness.


1998 KY26
     M. Hicks and D. Rabinowitz, Jet Propulsion Laboratory, report:
"We obtained BVRI photometry of this object with the Table Mountain
0.6-m telescope on the night of June 3.  After subtraction of solar
colors, we determine color ratios of B-R = +0.050 +/- 0.061, V-R =
+0.024 +/- 0.040, I-R = +0.045 +/- 0.040, R = 17.08 +/- 0.020,
consistent with C- and M-type asteroids.  R-band photometry from
June 8.329-8.487 UT yields a double-peaked lightcurve with a mean
absolute Bessel R magnitude of 24.95 +/- 0.01 and a synodic period
of 10.686 +/- 0.024 min, consistent with the small size and
extremely fast rotation reported by Ostro et al. (IAUC 6935) and by
Pravec and Sarounova (IAUC 6941)."


SGR 1627-41
     M. Feroci, E. Costa, L. Amati, L. Piro, and B. Martino,
Istituto di Astrofisica Spaziale, CNR, Rome; L. Di Ciolo and A.
Coletta, BeppoSAX Science Operation Center, Rome; and F. Frontera,
Istituto Tecnologie e Studio Radiazioni Extraterrestri, CNR,
Bologna, report:  "The Gamma Ray Burst Monitor (GRBM) onboard
BeppoSAX has detected bursts from a direction consistent with the
new soft gamma-ray repeater SGR 1627-41 (IAUC 6944).  Two events
were triggered on June 17.90091 (consistent with BATSE trigger
6834) and 18.15556 UT.  The durations of the events are about 90
and 40 ms, respectively.  The spectral indices, assuming a power-
law function, are 3.0 +/- 0.3 and 2.5 +/- 0.3, respectively, in the
energy band 40-700 keV.  These detections are in agreement with
those reported by BATSE and with the harder-energy range of the
GRBM.  Data analysis is in progress to identify other bursts from
the same source."


NOVA SAGITTARII 1998
     Visual magnitude estimates by K. Hornoch, Lelekovice, Czech
Rep.:  May 2.07 UT, 10.7; 6.05, 10.6; 10.07, 10.7; 27.04, 11.1;
June 1.03, 11.3.

                      (C) Copyright 1998 CBAT
1998 June 18                   (6945)            Daniel W. E. Green

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