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IAUC 3304: 1978l; 1978m; 1977g; P/SCHWASSMANN-WACHMANN 1

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IAUC number 

                                                  Circular No. 3304
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 617-864-5758


COMET MACHHOLZ (1978l)
     Further approximate total visual magnitude estimates by D. E.
Machholz, Los Gatos, CA (25-cm reflector): Oct. 6.52 UT, 10.5; 7.51,
10.7; 8.53, 10.7; 9.52, 10.7; 11.53, 10.5

     Ephemeris continuation from the orbital elements on MPC 4540:

     1978/79 ET  R. A. (1950) Decl.     Delta     r      m1
     Nov. 28     0 02.93    -60 09.5    2.091   2.224   12.1
     Dec.  8    23 33.72    -56 02.5
          18    23 18.07    -52 13.9    2.554   2.378   12.8
          28    23 10.22    -48 53.4
     Jan.  7    23 07.09    -46 00.6    3.005   2.542   13.4
          17    23 06.88    -43 32.8
          27    23 08.53    -41 26.5    3.393   2.713   14.0
     Feb.  6    23 11.38    -39 39.3
          16    23 14.95    -38 09.1    3.689   2.889   14.4

                   m1 = 7.0 + 5 log Delta + 10 log r


COMET SEARGENT (1978m)
     Total visual magnitude estimates: Oct. 6.72 UT, 6 (T. B.
Tregaskis, Mount Eliza, Victoria, 10 x 50 binoculars); 9.72, 6.5
(Tregaskis; very faint, wide tail, 0o.5 long in p.a. ~ 200o); 11.75,
7 (Tregaskis); 22.95, 7.5 (V. F. de Assis Neto, Sao Francisco de
Oliveira, Brazil, 10 x 70 binoculars); 25.90, 7.8 (de Assis Neto;
coma diameter 12', diffuse with condensation, 31-cm reflector).


PERIODIC COMET ASHBROOK-JACKSON (1977g)
     Total visual magnitude estimates: Oct. 21.03, 11.9 (A. Hale,
Annapolis, MD, 41-cm reflector); 25.05, 11.8 (J. Bortle, Brooks
Observatory, 32-cm reflector); Nov. 1.11, 11.7 (Bortle).


PERIODIC COMET SCHWASSMANN-WACHMANN 1
     J. Bortle, Brooks Observatory, provides the following total
visual magnitude estimates, obtained using a 32-cm reflector: Oct.
8.36 UT, 11.8; 9.37, 11.8; 30.3, [13.


1978 November 13               (3304)              Brian G. Marsden

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