Circular No. 4968 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 1990 No. 1 T. Harrison and J. Johnson, Mount Stromlo Observatory, report infrared photometry of N LMC 1990 No. 1 taken with the Infrared Photometer System on the 2.3-m reflector at Siding Spring (+/- 0.05 mag unless otherwise noted): Feb. 13.4 UT, J = 13.85, H = 13.14, K = 12.93; Feb. 14.4, 14.11 +/- 0.10, 13.10, 12.92. 1990 BA Extension to the ephemeris on IAUC 4951: 1990 ET R.A. (1950) Decl. Delta r V Feb. 18 7 30.01 +19 51.4 0.210 1.162 15.6 23 7 43.50 +18 39.8 28 7 57.15 +17 30.1 0.238 1.181 16.0 Mar. 5 8 10.83 +16 22.1 10 8 24.43 +15 16.0 0.275 1.206 16.4 15 8 37.82 +14 11.8 20 8 50.96 +13 09.4 0.320 1.236 16.8 25 9 03.83 +12 08.6 30 9 16.45 +11 08.9 0.374 1.270 17.2 Apr. 4 9 28.83 +10 10.0 9 9 40.95 + 9 11.7 0.438 1.307 17.6 1990 BG Extension to the ephemeris on IAUC 4952: 1990 ET R.A. (1950) Decl. Delta r V Feb. 18 5 17.25 +46 55.3 0.630 1.353 15.6 23 5 00.70 +48 33.6 28 4 46.33 +49 58.6 0.668 1.263 15.8 Mar. 5 4 34.05 +51 14.9 10 4 23.54 +52 26.1 0.702 1.169 16.0 15 4 14.43 +53 34.4 20 4 06.27 +54 41.4 0.726 1.072 16.0 25 3 58.60 +55 47.4 30 3 50.85 +56 52.1 0.734 0.974 16.0 Apr. 4 3 42.37 +57 53.7 9 3 32.43 +58 48.6 0.721 0.877 16.0 1990 February 22 (4968) Daniel W. E. Green
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