Circular No. 4666 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 or GREEN@CFA.BITNET MARSDEN or GREEN@CFAPS2.SPAN NOVA IN THE LARGE MAGELLANIC CLOUD 1988 No. 2 G. Martin, M. Hamuy, and N. Suntzeff, Cerro Tololo Interamerican Observatory, report the following Kron-Cousins photometry obtained on Oct. 14.30 UT with the CTIO 0.4-m telescope: V = 10.92, B-V = +0.14, U-B = -0.70, V-R = +0.30, R-I = +0.34. Visual magnitude estimates (cf. IAUC 4663): Oct. 13.75 UT, 10.3 (R. H. McNaught, Siding Spring Observatory); 14.37, 10.9 (A. F. A. L. Jones, Nelson, New Zealand); 15.53, 11.4 (P. Williams, Heathcote, N.S.W.); 17.42, 11.7 (D. A. J. Seargent, The Entrance, N.S.W.); 18.72, 12.1 (McNaught); 19.48, 12.8 (McNaught). 1980 PA Extension to the ephemeris on IAUC 4627: 1988 ET R.A. (1950) Decl. Delta r V Oct. 16 2 46.99 +49 30.8 0.063 1.043 13.6 21 4 03.34 +48 05.8 26 4 57.40 +44 30.9 0.078 1.046 14.1 31 5 32.00 +40 33.2 Nov. 5 5 53.37 +36 57.2 0.100 1.061 14.6 10 6 06.10 +33 53.4 15 6 13.08 +31 20.1 0.127 1.088 15.0 20 6 16.14 +29 12.8 25 6 16.49 +27 27.1 0.157 1.124 15.3 30 6 14.92 +25 59.2 Dec. 5 6 12.07 +24 46.2 0.193 1.169 15.6 10 6 08.53 +23 45.8 15 6 04.83 +22 56.4 0.238 1.220 15.8 R CORONAE BOREALIS Visual magnitude estimates (cf. IAUC 4650): Sept. 7.85, 11.3 (E. Schweitzer, Strasbourg, France); 15.82, 11.4 (A. Boattini, Florence, Italy); 18.83, 11.2 (M. Verdenet, Bourbon-Lancy, France); 28.13, 10.9 (R. Royer, Wrightwood, CA); Oct. 3.81, 10.4 (A. Pereira, Linda-a-Velha, Portugal); 11.81, 10.0 (Pereira); 16.75, 10.2 (Boattini). 1988 October 19 (4666) Daniel W. E. Green
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