Central Bureau for Astronomical Telegrams
IAUC 4547: 1988b; 1988D; 1987A; V1819 Cyg
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Circular No. 4547
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 SHOEMAKER (1988b)
Carolyn and Eugene Shoemaker report the discovery of their
twelfth comet. The following positions are available:
1988 UT R. A. (1950) Decl. m1 Observer
Jan. 23.46734 10 27 59.55 +35 02 16.7 16 Shoemaker
23.50069 10 27 57.46 +35 02 17.8 "
Feb. 12.32292 10 07 10.2 +34 35 57 17 Mueller
12.35764 10 07 08.2 +34 35 54 "
C. and E. Shoemaker (Palomar). 0.46-m Schmidt telescope films.
Comet diffuse with no central condensation.
J. Mueller (Palomar). 1.2-m Oschin Schmidt telescope. Image
"kinked" due to mirror motion; 5' tail toward p.a. 10 deg. Measured
by A. Maury (semiaccurate positions).
SUPERNOVA 1988D IN MCG +0-20-006
R. Lenzen, D. Lutz, and U. Hopp, Max-Planck-Institut fur
Astronomie, Heidelberg, telex: "We confirm the SN 1988D in MCG
+0-20-006 by observations obtained Feb. 11 at Calar Alto Observatory.
Johnson magnitudes obtained Feb. 11.85 UT with the 3.5-m telescope
(+ CCD): V = 17.8, B-V = +0.5, V-R = +0.6. Low-resolution
CCD spectroscopy (0.36 nm/pixel, range 390-700 nm) obtained with
the 2.2-m telescope yields a spectrum that resembles that of a
type-I supernova about 20 days after maximum."
SUPERNOVA 1987A IN THE LARGE MAGELLANIC CLOUD
Visual magnitude estimates by A. C. Beresford, Adelaide, South
Australia: Feb. 3.56 UT, 6.6; 6.48, 6.6; 7.50, 6.6; 8.49, 6.5;
9.48, 6.7; 10.48, 6.7; 11.51, 6.7; 12.56, 6.8.
V1819 CYGNI
Visual magnitude estimates (cf. IAUC 4496): 1987 Nov. 17.73
UT, 13.6 (A. Boattini, Florence, Italy); 21.40, 13.9 (S. Sakuma,
Kawasaki, Japan); Dec. 11.74, 14.2 (M. Verdenet, Bourbon-Lancy,
France); 26.72, 13.5 (Boattini, Piazzano, Italy); 1988 Jan. 1.75,
13.5 (Boattini); 7.74, 13.6 (Verdenet); 8.74, 13.6 (Boattini);
9.73, 12.6 (M. V. Zanotta, Milan, Italy).
1988 February 12 (4547) Daniel W. E. Green
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