Circular No. 4165 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 SHOEMAKER (1986a) A new comet has been discovered by Carolyn S. and Eugene M. Shoemaker. The following observations are available: 1986 UT R.A. (1950.0) Decl. m1 Observer Jan. 10.467 9 34.5 +20 40 10 Shoemaker 12.37442 9 35 08.59 +20 52 50.7 13 Skiff 12.43234 9 35 09.24 +20 53 15.1 " C. and E. Shoemaker (Palomar). 0.46-m Schmidt. Comet moderately condensed; short tail. B. A. Skiff (Lowell Observatory, Anderson Mesa Station). Measurer: S. J. Bus. Short tail in p.a. 86. Communicated by E. Bowell. AG DRACONIS J. Mattei, AAVSO, communicates the following magnitude estiates by J. Bortle, Stormville, NY, that suggest that another outburst is occurring (cf. IAUC 4038): Jan. 12.3 UT, 9.0; 13.3, 9.0. TT ARIETIS Visual magnitude estimates: 1985 July 26.26 UT, 11.0 (Bortle): Aug. 18.45, 10.6 (R. Ducoty, Capitola, CA); Sept. 6.9, 10.9 (A. Mizser, Budapest, Hungary); 13.0, 10.9 (Mizser); 20.12, 10.7 ( Bortle); Oct. 10.98, 10.5 (E. Schweitzer, Strasbourg, France). U AQUARII Visual magnitude estimates: 1985 July 28, 13.3 (M. Verdenet, Bourbon-Lancy, France); Aug. 10.1 UT, 13.4 (Bortle); Sept. 13.1, 13.3 (Bortle); Nov. 2, 12.9 (Verdenet); 11, 12.3 (Verdenet). IP PEGASI Visual magnitude estimates by Ducoty (cf. IAUC 4108): 1985 Oct. 5.25 UT, 14.8; 19.14, [14.5; 31.16, 12.4; Nov. 3.18, 12.0. SATELLITES OF URANUS Corrigendum. On IAUC 4164 the references to the estimated radii R should be to the estimated diameters D. 1986 January 17 (4165) Brian G. Marsden
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