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IAUC 6520: 1996bw; 126P; Corrs

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                                                  Circular No. 6520
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
Postal Address: Central Bureau for Astronomical Telegrams
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)
Phone 617-495-7244/7440/7444 (for emergency use only)


SUPERNOVA 1996bw IN NGC 664
     S. Benetti and M. Turatto, European Southern Observatory, report:
"A fully-reduced CCD spectrogram of SN 1996bw (range 370-970 nm,
resolution 1.5 nm) obtained on Dec. 7.2 UT with the 3.6-m
telescope (+ EFOSC) shows the typical spectral features of a type II
supernova about two weeks after maximum.  The spectrum consists of a
broad H-alpha emission that is now developing a broad P-Cyg absorption,
and there are well-developed P-Cyg profiles of H-delta, H-gamma, H-beta
and He I 587.6 nm.  Blueward of H-alpha an absorption identified with
Si II 635.5 nm is also present.  A similar feature was visible in the
spectra of SNe 1990E and 1992H about 19 days after maximum (Clocchiatti
et al.)  The lines are superimposed on a blue continuum (Tbb about
8600 K).  The expansion velocity deduced from the minima of the
lines is about 11 000 km/s."


COMET 126P/IRAS
     Continuation to the ephemeris on IAUC 6483:

1996/97     R. A. (2000) Decl.     Delta      r    Elong. Phase      m1
Dec.  3    22 05.49    + 2 07.9    1.559    1.743   83.2   34.2     12.8
     13    22 17.70    + 6 43.7    1.689    1.770   78.0   33.0     13.1
     23    22 31.22    +10 58.9    1.819    1.802   73.3   31.5     13.4
Jan.  2    22 45.86    +14 58.4    1.950    1.840   68.9   29.9     13.7
     12    23 01.53    +18 45.9    2.078    1.883   64.8   28.2     14.1
     22    23 18.16    +22 24.1    2.204    1.930   61.0   26.5     14.4
Feb.  1    23 35.72    +25 54.5    2.328    1.982   57.5   24.8     14.8
     11    23 54.23    +29 18.0    2.448    2.036   54.3   23.2     15.1
     21     0 13.69    +32 35.0    2.565    2.094   51.3   21.6     15.5
Mar.  3     0 34.17    +35 45.1    2.679    2.154   48.5   20.2     15.8
     13     0 55.72    +38 47.6    2.789    2.217   46.0   18.8     16.1

     Total visual magnitude estimates (L = reflector): Nov. 1.89 UT, 11.8
(J. Carvajal, Teruel, Spain, 0.44-m L); 8.77, 12.6 (K. Sarneczky, Raktanya,
Hungary, 0.44-m L); 11.19, 12.6 (A. Hale, Cloudcroft, NM, 0.41-m L);
29.79, 12.8 (D. Rodriguez, Toledo, Spain, 0.44-m L); Dec. 1.75, 12.9
(K. Hornoch, Lelekovice, Czech Republic, 0.35-m L); 3.74, 12.8 (Hornoch).


CORRIGENDA
IAUC 6465, Comet C/1995 O1 (Hale-Bopp).  For 17h23m read 17h29m
IAUC 6518, Gamma-Ray Bursts.  For 1.4, 3.0 and 1.0 deg, read 1.4, 3.0 and
   1.0 standard deviations

                      (C) Copyright 1996 CBAT
1996 December 11               (6520)              Brian G. Marsden

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