Circular No. 3946 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 (1984f) Carolyn and Eugene Shoemaker report their discovery of a comet with the 0.46-m Schmidt telescope at Palomar as follows: 1984 UT R.A. (1950.0) Decl. m1 May 27.394 16 37.0 +13 53 14 29.368 16 34.6 +13 48 The object is diffuse and moderately condensed, with fanshaped coma structure to the north. PERIODIC COMET NEUJMIN 1 (1984c) Ephemeris from the orbital elements on MPC 7455: 1984 ET R.A. (1950.0) Decl. p r m1 June 29 18 20.06 -50 27.5 1.000 1.960 12.9 July 9 18 10.80 -50 18.3 19 18 03.08 -49 25.4 0.907 1.830 12.2 29 17 59.11 -47 50.8 Aug. 8 18 00.40 -45 41.9 0.875 1.719 11.7 18 18 07.36 -43 07.3 28 18 19.64 -40 13.6 0.890 1.631 11.4 Sept. 7 18 36.50 -37 04.9 17 18 56.93 -33 43.4 0.942 1.574 11.3 27 19 19.93 -30 10.7 Oct. 7 19 44.65 -26 28.4 1.030 1.553 11.4 17 20 10.31 -22 39.4 27 20 36.33 -18 46.9 1.158 1.570 11.8 Nov. 6 21 02.33 -14 54.3 16 21 27.98 -11 05.0 1.331 1.622 12.3 26 21 53.14 - 7 21.9 Dec. 6 22 17.73 - 3 46.9 1.548 1.706 12.9 SUPERNOVA IN ESO 323-G99 M. M. Phillips and J. A. Graham, Cerro Tololo Interamerican Observatory, report preliminary estimates on May 23.25 UT of V = 15.7, B-V = +0.6, for the supernova reported on IAUC 3944. A red spectrogram was most consistent with type I classification. Interstellar Na D absorption was detected near zero redshift. 1984 May 30 (3946) Brian G. Marsden
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