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IAUC 4403: 1986l; 1986n; N And 1986

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                                                  Circular No. 4403
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
Postal Address: Central Bureau for Astronomical Telegrams
Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
TWX 710-320-6842 ASTROGRAM CAM    Telephone 617-495-7244/7440/7444


COMET WILSON (1986l)
     H. P. Larson, University of Arizona; M. J. Mumma, Goddard
Space Flight Center; H. A. Weaver, Space Telescope Science Institute;
and S. Drapatz, Max Planck Institute for Physics and Astrophysics,
report: "We have detected water vapor in comet Wilson
(1986l) using high-resolution infrared spectra acquired with the
University of Arizona's FTS on NASA's Kuiper Airborne Observatory.
Observations were made on Apr. 12, 14 and 17 during 15h-18h UT.
Twelve lines of the nu-3-band (001-000) and one of the hot-band
(011-010), were detected.  The water production rate was 2 to 3 x
10**29 molecules s-1 on Apr. 12 and 17 but was significantly smaller
on Apr. 14.  The water vapor lines were measured at about 2 km/s
velocity resolution on Apr. 12.  Several unidentified lines were found
in the 2.6 micron region on Apr. 14, and a search for CH4 at 3.3 microns was
also conducted.  Although CH4 lines are not evident in the quick-
look data, the cometary continuum was detected.  A preliminary
upper limit to the CH4 production rate is 4 x 10**28 molecules s-1.
A survey spectrum (3.0-1.5 microns) was obtained at 10 cm-1 resolution (lambda/
dlambda about 240 at 2.1 microns) on Apr. 17, in which the nu-3-band H2O
emission and the cometary continuum were simultaneously detected."
     Total visual magnitude estimates: May 25.46 UT, 6.6 (G.
Garradd, Tamworth, N.S.W., 7 x 50 bin.); 26.36, 6.6 (Garradd);
28.38, 6.8 (Garradd); 30.27, 7.0 (G. W. Wolf, Wellington, N.Z., 7
x 50 bin.); June 1.42, 7.1 (Garradd); 2.36, 7.2 (Wolf).


COMET SORRELLS (1986n)
     Total visual magnitude estimates: May 27.44 UT, 9.9 (A. Hale,
Las Cruces, NM, 0.41-m reflector); 29.40 UT, 9.5 (E. A. Jacobson,
Evansville, MN, 0.25-m reflector); 30.44, 10.1 (C. S. Morris, near
Mt. Wilson, CA, 0.26-m reflector); June 1.71, 10.3 (G. W. Wolf,
Wellington, New Zealand, 0.21-m reflector).


NOVA ANDROMEDAE 1986
     Visual magnitude estimates: May 1.16 UT, 12.7 (A. Mizser,
Budapest, Hungary); 9.12, 12.4 (M. Verdenet, Bourbon-Lancy,
France); 25.02, 12.2 (P. Schmeer, Bischmisheim, West Germany);
26.07, 12.3 (Schmeer).


1987 June 4                    (4403)              Brian G. Marsden

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