Circular No. 4688 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 SUPERNOVA 1988Y IN ANONYMOUS GALAXY P. Wild, Astronomical Institute, Berne University, reports his discovery of a supernova at R.A. = 2h42m27s.70, Decl. = -8 37'05".8 (equinox 1950.0), at the southern tip of an anonymous galaxy. The object was of mpv = 16.0 on Nov. 14.9 UT and about 17 on Dec. 3.8. 1988 XB Y. Oshima, Gekko Observatory, Shizuoka, reports his discovery of a fast-moving asteroidal object, as follows: 1988 UT R.A. (1950) Decl. Mag. Dec. 5.78264 7 50 46.52 +23 15 50.8 16.0 5.81389 7 50 30.14 +23 17 11.4 6.66528 7 43 33.12 +23 52 13.1 16.0 6.72639 7 43 02.03 +23 54 38.3 6.75764 7 42 46.42 +23 55 49.9 Computations by S. Nakano, Center for Astrophysics, indicate that the object is of Apollo type. The closest approach to the earth was 0.09 AU around Nov. 20. T = 1988 Oct. 3.62 ET Peri. = 275.06 e = 0.4831 Node = 73.45 1950.0 q = 0.7368 AU Incl. = 3.35 a = 1.4254 AU n = 0.57915 P = 1.70 years 1988 ET R.A. (1950) Decl. Delta r V Dec. 5 7 57.51 +22 40.9 0.130 1.082 15.1 7 7 40.86 +24 05.3 9 7 25.77 +25 13.4 0.150 1.114 15.2 11 7 12.14 +26 07.9 13 6 59.86 +26 51.1 0.173 1.146 15.4 15 6 48.83 +27 25.1 17 6 38.93 +27 51.7 0.199 1.177 15.5 19 6 30.08 +28 12.1 21 6 22.17 +28 27.6 0.227 1.209 15.6 23 6 15.13 +28 39.1 25 6 08.87 +28 47.4 0.257 1.240 15.9 1988 December 7 (4688) Brian G. Marsden
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