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Back Circular No. 5992 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) COMET SHOEMAKER (1994k) The following additional precise positions have been reported: 1994 UT R.A. (2000) Decl. m1 Observer May 22.22575 17 17 45.89 -10 18 00.8 18.0 di Cicco 22.23167 17 17 45.76 -10 18 02.6 19.0 " 22.23797 17 17 45.46 -10 18 03.0 18.5 " 22.75573 17 17 26.72 -10 20 35.5 16.6 Nakamura 22.76146 17 17 26.51 -10 20 36.5 " D. di Cicco (Sudbury, MA). 0.28-m Schmidt-Cassegrain + CCD. A. Nakamura (Kuma Kogen, Japan). Communicated by S. Nakano. The following parabolic orbital elements by B. G. Marsden, from 10 observations (May 14-22), are necessarily indeterminate; it is possible that this comet is of short period. T = 1994 Jan. 30.087 TT Peri. = 84.124 Node = 110.880 2000.0 q = 1.77494 AU Incl. = 11.288 1994 TT R. A. (2000) Decl. Delta r Elong. Phase m1 May 18 17 20.16 - 9 58.4 1.286 2.238 153.7 11.6 16.5 23 17 17.30 -10 21.7 1.303 2.275 158.5 9.4 16.6 28 17 14.15 -10 47.3 1.325 2.313 163.0 7.4 16.8 June 2 17 10.86 -11 14.9 1.354 2.352 166.7 5.7 16.9 7 17 07.56 -11 44.4 1.388 2.392 168.9 4.7 17.0 12 17 04.38 -12 15.1 1.429 2.432 168.5 4.8 17.1 17 17 01.45 -12 46.9 1.475 2.473 165.8 5.8 17.3 22 16 58.87 -13 19.3 1.528 2.514 162.0 7.2 17.4 27 16 56.70 -13 52.0 1.587 2.556 157.6 8.7 17.6 COMET TAKAMIZAWA-LEVY (1994f) Total visual magnitude estimates: Apr. 21.35 UT, 9.6 (J. E. Bortle, Stormville, NY, 0.32-m reflector); May 9.04, 8.7 (K. Sarneczky, Raktanya, Hungary, 20x60 binoculars); 12.04, 8.7 (A. Diepvens, Balen, Belgium, 0.15-m refractor); 14.35, 8.8 (C. S. Morris, Pine Mountain Club, CA, 20x80 binoculars); 22.25, 8.3 (C. E. Spratt, Victoria, BC, 0.20-m reflector). 1994 May 23 (5992) Daniel W. E. Green