Circular No. 5514 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 BRADFIELD (1992i) William A. Bradfield reports his discovery of a comet, his sixteenth. The following positions are available: 1992 UT R.A. (2000) Decl. m1 Observer May 3.8066 0 23.1 -15 31 10 Bradfield 4.73961 0 29 37.05 -15 41 30.5 Gilmore 4.75569 0 29 44.05 -15 41 31.8 " 4.75703 0 29 44.65 -15 41 32.7 " 4.79144 0 29 59.86 -15 41 37.7 McNaught 4.79896 0 30 03.03 -15 41 37.7 " W. A. Bradfield (Dernancourt, near Adelaide, S. Australia). Object diffuse without central condensation. A. C. Gilmore and P. M. Kilmartin (Mt. John University Observatory). Round coma of diameter about 3'; comet moderately condensed with a bright central condensation; no hint of tail. R. H. McNaught and D. I. Steel (Siding Spring). Uppsala Southern Schmidt films. 1' coma; 3' tail toward the southwest. COMET ZANOTTA-BREWINGTON (1991g1) Ephemeris from orbital elements on MPC 19818: 1992 TT R. A. (2000) Decl. Delta r Elong. Phase m1 May 8 9 39.55 -58 19.0 1.292 1.887 109.5 30.3 13.3 13 10 00.19 -56 00.9 1.359 1.959 110.7 28.9 13.6 18 10 18.33 -53 46.2 1.431 2.029 111.2 27.7 13.9 23 10 34.46 -51 37.3 1.509 2.100 111.2 26.7 14.1 28 10 48.98 -49 35.9 1.593 2.169 110.7 25.9 14.4 June 2 11 02.22 -47 43.1 1.683 2.238 109.7 25.3 14.6 7 11 14.41 -45 59.5 1.777 2.306 108.3 24.7 14.9 12 11 25.74 -44 25.2 1.876 2.374 106.5 24.2 15.1 17 11 36.36 -42 59.9 1.980 2.441 104.5 23.8 15.4 22 11 46.38 -41 43.3 2.087 2.508 102.2 23.3 15.6 27 11 55.92 -40 35.0 2.198 2.574 99.8 22.9 15.8 July 2 12 05.05 -39 34.3 2.312 2.639 97.2 22.5 16.0 7 12 13.82 -38 40.9 2.429 2.704 94.4 22.0 16.2 1992 May 4 (5514) Daniel W. E. Green
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