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IAUC 4017: 1984i; 1984q

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                                                  Circular No. 4017
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 AUSTIN (1984i)
     Total visual magnitude estimates: Nov. 16.09 UT, 11: (R. Keen,
Mt. Thorodin, CA, 0.32-m refl.); 20.25, 9.9 (C. S. Morris, Lockwood
Valley, CA, 0.25-m refl.); 26.16, 10.4: (Morris); 28.78, 11.6
(J.-C. Merlin, Le Creusot, France, 0.26-m refr.).

     Ephemeris continuation from the orbital elements on MPC 9154:

     1984/85 ET  R.A. (1950.0) Decl.      p        r       m1

     Dec. 26     0 28.53    +17 12.0    2.304    2.647    12.5
     Jan.  5     0 29.98    +16 02.9
          15     0 33.26    +15 22.3    2.935    2.922    13.5
          25     0 37.82    +15 02.5
     Feb.  4     0 43.24    +14 58.0    3.535    3.187    14.3
          14     0 49.27    +15 04.8
          24     0 55.70    +15 20.0    4.076    3.442    14.9


PERIODIC COMET SHOEMAKER 1 (1984q)
     Total visual magnitude estimates: Nov. 18.21 UT, 11.7 (A.
Hale, Whitaker Peak, CA, 0.20-m refl.); 21.03, 11.8 (J. Bortle,
Stormville, NY, 0.32-m refl.); 24.18, 11.6 (Hale, Idyllwild, CA);
28.76, 12.3 (J.-C. Merlin, Le Creusot, France, 0.26-m refr.).

     Ephemeris continuation from the orbital elements on MPC 9293:

     1984/85 ET  R.A. (1950.0) Decl.      p        r       m1

     Dec.  6    23 11.91    +24 05.3    1.619    2.088    12.2
          16    23 24.28    +25 04.2
          26    23 38.62    +26 09.7    1.870    2.145    12.7
     Jan.  5    23 54.58    +27 21.3
          15     0 11.88    +28 37.8    2.133    2.212    13.1
          25     0 30.33    +29 57.8
     Feb.  4     0 49.75    +31 20.0    2.401    2.286    13.5
          14     1 10.00    +32 42.4
          24     1 30.98    +34 03.7    2.667    2.366    13.9
     Mar.  6     1 52.59    +35 22.2
          16     2 14.73    +36 36.4    2.925    2.452    14.2
          26     2 37.33    +37 44.9
     Apr.  5     3 00.28    +38 46.8    3.170    2.541    14.6
          15     3 23.49    +39 40.8
          25     3 46.85    +40 26.5    3.392    2.633    14.9


1984 December 10               (4017)              Brian G. Marsden

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