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IAUC 6716: 1997dc; V1333 Aql; 1997bp, 1997cx; 78P; Corr

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IAUC number 

                                                 Circular No. 6716
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/cfa/ps/cbat.html
Phone 617-495-7244/7440/7444 (for emergency use only)


SUPERNOVA 1997dc IN NGC 7678
     W.-d. Li, Beijing Astronomical Observatory, reports that a
low-resolution spectrogram (20 nm/mm, range 380-830 nm) of SN
1997dc was obtained with the 2.16-m telescope at Xinglong station
by Li, W. Liu, Q.-y. Qiao, and A. Esamdin.  The spectrum shows
broad emission and absorption lines typical of a type-Ic supernova
at maximum light.  The whole spectrum is very similar to that of SN
1994I at maximum light (Filippenko et al. 1995, Ap.J. 450, L11).
Strong spectral lines include the Ca II infrared triplet and H and
K lines; O I at 774 nm; Na I D/He I at 580 nm; Si II at 630 nm; and
Fe II lines at 445, 490, and 508 nm.  There is no distinct evidence
of H Balmer lines.


V1333 AQUILAE
     C. Chevalier and S. A. Ilovaisky, Observatoire de Haute-
Provence, write:  "CCD monitoring of the optical counterpart of the
recurrent low-mass x-ray transient Aql X-1 with the OHP 1.2-m
telescope on Aug. 6.9, 7.9, 8.9, 9.9, and 10.9 UT shows that the
object is hovering around V = 17.5, indicating that the current
outburst has probably reached a maximum level typical of previous
such mild events (see IAUC 6638).  Recent publicly available XTE
data (up to Aug. 11.29) show that the x-ray flux reported on IAUC
6714 indeed appears to have leveled off since Aug. 8.5."


SUPERNOVAE 1997bp AND 1997cx
     S. Moretti and S. Tomaselli, Forli, Italy, report their
unfiltered CCD magnitudes of recent supernovae (GSC comparison
stars):  SN 1997bp in NGC 4680, May 27.92 UT, 16.1; SN 1997cx in
NGC 3057, July 28.96, 15.3.


COMET 78P/GEHRELS 2
     Total CCD magnitudes:  Aug. 9.07 UT, 12.6 (A. Galad and A.
Pravda, Modra, Slovakia, 0.6-m f/5.5 reflector); 12.08, 13.1 (H.
Mikuz, Crni Vrh Observatory, Slovenia, 0.36-m f/6.7 reflector + V
filter).


CORRIGENDUM
     On IAUC 6715, the last two magnitude estimates attributed to
comet C/1997 J1 (Mueller) belong to comet C/1996 J1 (Evans-Drinkwater).

                      (C) Copyright 1997 CBAT
1997 August 12                 (6716)            Daniel W. E. Green

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