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Circular No. 6242 Central Bureau for Astronomical Telegrams INTERNATIONAL ASTRONOMICAL UNION Postal Address: Central Bureau for Astronomical Telegrams Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A. IAUSUBS@CFA.HARVARD.EDU or FAX 617-495-7231 (subscriptions) BMARSDEN@CFA.HARVARD.EDU or DGREEN@CFA.HARVARD.EDU (science) Phone 617-495-7244/7440/7444 (for emergency use only) SUPERNOVA 1995af IN ANONYMOUS GALAXY C. Pollas, Observatoire de la Cote d'Azur (OCA), reports his discovery of an apparent supernova (V = 20.5) on two films obtained on Sept. 1.07 and 2.08 UT by D. Albanese and himself with the OCA Schmidt telescope; the supernova is located at R.A. = 23h24m53s.45, Decl. = +41o24'11".5 (equinox 2000.0), which is 5".4 west and 8".6 north of the spiral galaxy's center (the galaxy itself of mag V about 18.0). An OCA Schmidt film taken on Sept. 20.95 shows the new object at V = 21.7. SN 1995af was not visible on OCA Schmidt films taken in 1991 Aug. and Sept. (limiting mag B = 22.0) or on 1995 Aug. 5.10 (to B = 20.0), nor is anything visible at this location on the first and second Palomar Sky Survey photographs. A nearby star (V = 19) has position end figures 53s.33, 05".6. SUPERNOVA 1995ad IN NGC 2139 R. H. McNaught, Anglo-Australian Observatory, reports the following precise position obtained on Sept. 29.8 UT: R.A. = 6h01m06s.13, Decl. = -23o40'29".0 (equinox 2000.0); this is 24".5 west and 7".7 south of the galaxy's center. Both SN 1995ad and a nearby foreground star were at (unfiltered) mag 15.6, the latter having position end figures 03s.45, 39'53".4. Pollas reports a photograph taken with the OCA Schmidt telescope on Sept. 29.18 UT shows the supernova at mag about 15 and provides the following position end figures for SN 1995ad: 06s.17, 28".6. Pollas estimates McNaught's foreground star (above) at mag V about 17.5, and notes the presence of another nearby star (V about 16.0) with position end figures 00m55s.11, 41'07".5. SGR 1806-20 C. Kouveliotou, G. J. Fishman, C. A. Meegan, and K. Hagedon report for the Compton Observatory BATSE Team: "We have detected transient soft-gamma-ray emission from a region consistent with the direction of the 'soft gamma repeater' (SGR) 1806-20. The BATSE location is centered at R.A. = 272 deg, Decl. = -20 deg and has an error radius of about 4 deg. The outburst was recorded on Sept. 30.72852 UT and consists of one pulse with a triangular shape and 60-ms duration (40 ms FWHM). The spectrum of the event has an upper energy cutoff of about 100 keV, consistent with a typical SGR spectrum. Follow-up observations of the source region at other wavelengths are strongly encouraged. " 1995 October 3 (6242) Daniel W. E. Green
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