Circular No. 5095 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 1990 SA The following additional precise positions have been reported: 1990 UT R.A. (1950) Decl. Observer Sept.14.23062 23 04 29.28 + 0 27 33.8 Balam 14.26326 23 04 29.13 + 0 23 45.6 " 19.20329 23 05 47.98 - 8 14 40.6 McCrosky 19.20623 23 05 48.00 - 8 14 57.0 " 19.41024 23 05 52.91 - 8 33 50.7 McNaught 19.41319 23 05 52.96 - 8 34 07.1 " 20.20076 23 06 06.25 - 9 47 44.8 Balam 20.21326 23 06 06.22 - 9 48 53.1 " 21.24833 23 06 24.60 -11 21 08.8 " 21.26361 23 06 24.81 -11 22 28.2 " D. Balam and J. Tatum (Victoria). Prediscovery images, somewhat diffuse, near edge of Sept. 14 exposures, outside polygon of reference stars. R. E. McCrosky and C.-Y. Shao (Oak Ridge). 1.5-m reflector + CCD. R. H. McNaught (Siding Spring). Uppsala Southern Schmidt. Improved orbital elements by B. G. Marsden, Center for Astrophysics, from 16 observations Sept. 14-21: T = 1990 July 6.262 ET Peri. = 116.238 e = 0.46116 Node = 171.649 1950.0 q = 1.12780 AU Incl. = 38.892 a = 2.09301 AU n = 0.325496 P = 3.03 years 1990 ET R.A. (1950) Decl. Delta r V Sept.16 23 04.93 - 2 48.6 0.356 1.359 15.3 21 23 06.33 -10 59.0 26 23 07.99 -17 30.1 0.438 1.416 16.2 Oct. 1 23 10.03 -22 31.0 6 23 12.50 -26 17.2 0.552 1.474 17.1 11 23 15.41 -29 04.0 16 23 18.77 -31 04.4 0.685 1.535 17.7 21 23 22.58 -32 28.2 26 23 26.84 -33 23.4 0.829 1.596 18.3 1990 September 21 (5095) Daniel W. E. Green
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