Circular No. 4010 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 LEVY-RUDENKO (1984t) Ephemeris from the second set of elements on IAUC 4009: 1984 ET R.A. (1950.0) Decl. p r m1 Oct. 27 18 58.23 - 0 19.7 1.076 1.245 10.1 Nov. 1 18 54.54 + 2 31.3 6 18 51.56 + 5 18.1 1.120 1.138 9.8 11 18 49.08 + 8 01.7 16 18 46.94 +10 43.3 1.148 1.046 9.5 21 18 44.98 +13 23.6 26 18 43.05 +16 03.6 1.155 0.974 9.2 Dec. 1 18 41.03 +18 43.9 6 18 38.80 +21 25.0 1.136 0.930 9.0 11 18 36.28 +24 07.8 16 18 33.40 +26 53.5 1.090 0.919 8.8 21 18 30.11 +29 44.1 26 18 26.33 +32 42.5 1.018 0.942 8.8 COMET SHOEMAKER (1984s) Total visual magnitude estimates: Nov. 3.46 UT, 11.5 (C. S. Morris, Whitaker Peak, CA, 0.25-m reflector); 13.56, 12.0 (R. H. McNaught, Coonabarabran, NSW, 0.32-m reflector; possible tail 2' long in p.a. 40); 14.56, 12.0 (McNaught; tail/parabolic hood 0'7 long in p.a. 65); 15.56, 12.0 (McNaught; likwise 1'5 long in p.a. 25); 16.11, 11: (R. Keen, Mt. Thorodin, CO, 0.32-m reflector). PERIODIC COMET SHOEMAKER (1984q) Total visual magnitude estimates: Oct. 31.17 UT, 11.8 (J. Bortle, Stormville, NY, 0.32-m reflector); Nov. 16.12, 12: (Keen). TT ARIETIS Visual magnitude estimates: Oct. 26.90 UT, 13.4 (M. Verdenet, Bourbon-Lancy, France); 27.90, 14.5 (Verdenet); 31.03 (Bortle). RS OPHIUCHI Visual magnitude estimates by McNaught: Oct. 16.43 UT, 10.9; 24.41, 11.1; 27.41, 10.8; Nov. 12.41, 10.1:; 14.42, 10.4. 1984 November 19 (4010) Brian G. Marsden
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