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IAUC 5941: N Cas 1993; 1993e; P/SCHWASSMANN-WACHMANN 2; P/ENCKE

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                                                  Circular No. 5941
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
Postal Address: Central Bureau for Astronomical Telegrams
Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
Telephone 617-495-7244/7440/7444 (for emergency use only)
TWX 710-320-6842 ASTROGRAM CAM     EASYLINK 62794505
MARSDEN@CFA or GREEN@CFA (.SPAN, .BITNET or .HARVARD.EDU)


NOVA CASSIOPEIAE 1993
     P. Garnavich, Dominion Astrophysical Observatory, communicates:
"JHK photometry  obtained with the 1.8-m Plaskett telescope indicates
that the rapid brightening in the near-infrared, reported by Kidger et al.
(IAUC 5936), has slowed considerably: Feb 20.1 UT, J = 7.02, H = 4.99,
K = 3.22; 21.1, 7.0, 4.8, 3.1; 22.1, 7.18, 4.93, 3.19.  The uncertainties
on the three nights are +/- 0.05, 0.1 and 0.03 mag, respectively.


PERIODIC COMET SHOEMAKER-LEVY 9 (1993e)
     P. W. Chodas, D. K. Yeomans and Z. Sekanina, Jet Propulsion
Laboratory, provide the following more detailed prediction of
the impacts of the nuclei on Jupiter: nucleus 21, July 16.81
UT (corrected for light time), jovicentric latitude -43.26 deg, earth-
Jupiter-nucleus angle 98.73 deg; 20, 17.11, -43.34, 98.49; 19, 17.27,
-43.37, 98.36; 18, 17.48, -43.42, 98.20; 17, 17.61, -43.80, 98.21;
16, 18.02, -44.24, 99.42; 15, 18.30, -44.19, 98.09; 14, 18.78, -44.04,
98.13; 12, 19.42, -44.43, 97.22; 11, 19.89, -44.52, 97.58; 9, 20.41,
-44.78, 96.97; 8, 20.61, -45.00, 97.47; 7, 20.80, -44.54, 96.19;
6, 21.28, -44.78, 94.39; 5, 21.61, -44.69, 95.80; 4, 21.75, -44.10,
94.80; 3, 21.88, -44.11, 94.69; 2, 22.18, -44.14, 94.46; 1, 22.32,
-44.24, 94.02.  The 1-sigma uncertainties are 0.03 day, 0.6 deg and
1.7 deg, respectively.


PERIODIC COMET SCHWASSMANN-WACHMANN 2
     Total visual magnitude estimates: 1993 Sept. 18.11, 13.1 (B. H.
Granslo, Fjellhamar, Norway, 0.30-m reflector); Nov. 29.31, 12.3: (G. W.
Kronk, Troy, IL, 0.33-m reflector); Dec. 7.21, 12.5: (Kronk); 19.04,
12.5 (K. Sarneczky, Budapest, Hungary, 0.44-m reflector); 1994
Jan. 3.84, 12.0 (L. Szentasko, Veresegyhaz, Hungary, 0.33-m reflector);
11.25, 11.7 (R. Keen, Mt. Thorodin, CO, 0.32-m reflector); 19.82, 12.2
(Szentasko); 30.15, 10.6 (C. E. Spratt, Victoria, BC, 0.20-m reflector);
Feb. 2.15, 11.1 (A. Hale, Orogrande, NM, 0.20-m reflector);
8.99, 10.7 (G. Comello, Groningen, Netherlands, 0.28-m reflector);
15.14, 10.1 (J. Bortle, Stormville, NY, 0.32-m reflector);
19.93, 10.2 (D. W. E. Green, Selvino, Italy, 0.25-m reflector).


PERIODIC COMET ENCKE
     Total magnitudes: 1993 Dec. 16.97 UT, 11.1 (Bortle); 1994 Jan. 4.11,
10.3 (Hale); 12.08, 8.8 (Keen); 20.09, 8.0 (Keen); 24.09, 7.4 (Spratt);
27.07, 7.4 (Hale); Feb. 15.77, 6.6 (D. Seargent, The Entrance, N.S.W.,
25 x 100 binoculars); 16.77, 6.6 (P. Camilleri, Cobram, Victoria, 20 x 80
binoculars).


1994 February 24               (5941)              Brian G. Marsden

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