Circular No. 4299 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 WISEMAN-SKIFF (1987b) Jennifer Wiseman has discovered a comet on two photographic plates taken by Brian Skiff at the Lowell Observatory's Anderson Mesa Station on 1986 Dec. 28, with confirming plates obtained by Skiff and Wiseman on 1987 Jan. 19. The comet is diffuse with strong condensation. The positions were measured by Skiff: 1986/87 UT R.A. (1950) Decl. m1 Dec. 28.29426 8 03 23.21 + 8 18 50.4 14 28.33910 8 03 21.01 + 8 17 32.3 Jan. 19.11111 7 44 24.91 - 0 13 30.0 14.5 19.13194 7 44 24.03 - 0 13 52.3 NOVA CENTAURI 1986 L. H. Barrera, G. Le-Cerf and N. Vogt, Pontificia Universidad Catolica de Chile, Santiago, report that they obtained four spectrograms (baked IIa-O plates, range 410-510 nm, dispersion 2 nm/mm) between 1986 Dec. 26 and 1987 Jan. 4 using the 1-m telescope at the Manuel Foster Observatory, Cerro San Cristobal. The spectra are dominated by very broad emission of H-beta, H-gamma and several Fe II lines. The strongest lines (H-beta; Fe II at 492 and 502 nm) also show two blueshifted absorption components with relative displacements of about -1200 and -2600 km/s, respectively (Jan. 3.319 UT). NOVA IN SMALL MAGELLANIC CLOUD R. H. McNaught, Siding Spring Observatory, communicates the following V magnitudes, measured by G. Garradd from his hypered 2415 exposures: 1986 Oct 2.48 UT, [14.5; 4.54, 10.5; 7.51, 11.3; 20.45, 13.0; 21.42, 13.2; 23.48, 13.4; 28.50, 13.5; 30.47, 14.0:. PERIODIC COMET HALLEY (1982i) Further total visual magnitude estimates (L = reflector): 1986 Dec. 6.44 UT, 11.9 (J. E. Bortle, Stormville, NY, 0.50-m L); 12.54, 11.9 (A. Hale, Las Cruces, NM, 0.20-m L); 30.54, 12.3 (Hale); 31.84, 13.3 (J. Kobayashi, Kumamoto, Japan, 0.31-m L); 1987 Jan. 6.01, 13.5 (R. Fleet, Harare, Zimbabwe, 0.35-m L); 8.53, 12.2 (C. Morris, Little Rock, CA, 0.26-m L); 9.51, 12.2 (Hale); 10.51, 13.2 (R. A. Keen, Mt. Thorodin, CO, 0.3-m L). 1987 January 20 (4299) Daniel W. E. Green
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