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IAUC 6458: 1996 Q1; C/1995 O1; 1996aq

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                                                  Circular No. 6458
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)


COMET 1996 Q1
     The following CCD precise positions have been reported:

     1996 UT             R.A. (2000) Decl.        m1    Observer
     Aug. 21.43560    4 47 16.21   - 8 49 08.6   14.6   Offutt
          21.47828    4 47 20.20   - 8 48 16.2   14.2     "
          21.77022    4 47 48.26   - 8 42 12.6          Kojima
          21.77206    4 47 48.35   - 8 42 09.4          Abe
          21.77323    4 47 48.48   - 8 42 09.0          Kojima
          21.80573    4 47 51.69   - 8 41 29.3          Abe
          22.12717    4 48 22.46   - 8 34 44.2          Pravec
          22.12979    4 48 22.74   - 8 34 41.1            "

W. Offutt (Cloudcroft).  0.60-m f/7 Ritchey-Chretien.
T. Kojima (Chiyoda).  0.25-m f/6 reflector; some interfering clouds.
H. Abe (Yatsuka).  0.26-m f/6.0 reflector.
P. Pravec (Ondrejov).  0.65-m f/3.6 reflector.


COMET C/1995 O1 (HALE-BOPP)
     N. Biver, Observatoire de Paris-Meudon (OPM); A. Enzian,
Laboratoire de Glaciologie, Grenoble; D. Bockelee-Morvan, P. Colom,
J. Crovisier, E. Gerard, E. Lellouch, and H. Rauer, OPM; D.
Despois, Observatoire de Bordeaux; R. Moreno and G. Paubert,
Institut de Radio Astronomie Millimetrique (IRAM), Granada; and J.
K. Davies and W. R. F. Dent, Joint Astronomy Centre, Hilo, report
the detection of methyl cyanide (CH3CN) in comet C/1995 O1 with the
IRAM 30-m telescope:  "We detected on Aug. 14-17 the 8(0)-7(0),
8(1)-7(1), 8(2)-7(2), and 8(3)-7(3) lines of CH3CN around 147 GHz
with integrated line areas on a Tb scale of 0.071 +/- 0.008, 0.073
+/- 0.008, 0.038 +/- 0.008, and 0.051 +/- 0.009 K km/s,
respectively.  We derive a CH3CN production rate of 1.2 x 10E26
molecules/s.  For comparison, Q[CO], Q[HCN], and Q[OH] were 1.5 x
10E29, 9 x 10E26, and 2.5 x 10E29 molecules/s, respectively, as
measured at the same time at IRAM and Nancay."


SUPERNOVA 1996aq IN NGC 5584
     Corrigendum.  On IAUC 6454, line 19, for  FWZI  read  HWZI

                      (C) Copyright 1996 CBAT
1996 August 22                 (6458)            Daniel W. E. Green

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