IAUC 6242: 1995af; 1995ad; SGR 1806-20

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                                                  Circular No. 6242Central Bureau for Astronomical TelegramsINTERNATIONAL ASTRONOMICAL UNIONPostal Address: Central Bureau for Astronomical TelegramsSmithsonian 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 hisdiscovery of an apparent supernova (V = 20.5) on two films obtainedon Sept. 1.07 and 2.08 UT by D. Albanese and himself with the OCASchmidt telescope; the supernova is located at R.A. = 23h24m53s.45,Decl. = +41o24'11".5 (equinox 2000.0), which is 5".4 west and 8".6north of the spiral galaxy's center (the galaxy itself of mag Vabout 18.0).  An OCA Schmidt film taken on Sept. 20.95 shows thenew object at V = 21.7.  SN 1995af was not visible on OCA Schmidtfilms taken in 1991 Aug. and Sept. (limiting mag B = 22.0) or on1995 Aug. 5.10 (to B = 20.0), nor is anything visible at thislocation on the first and second Palomar Sky Survey photographs.  Anearby star (V = 19) has position end figures 53s.33, 05".6.SUPERNOVA 1995ad IN NGC 2139     R. H. McNaught, Anglo-Australian Observatory, reports thefollowing precise position obtained on Sept. 29.8 UT:  R.A. =6h01m06s.13, Decl. = -23o40'29".0 (equinox 2000.0); this is 24".5west and 7".7 south of the galaxy's center.  Both SN 1995ad and anearby foreground star were at (unfiltered) mag 15.6, the latterhaving position end figures 03s.45, 39'53".4.  Pollas reports aphotograph taken with the OCA Schmidt telescope on Sept. 29.18 UTshows the supernova at mag about 15 and provides the followingposition end figures for SN 1995ad:  06s.17, 28".6.  Pollasestimates McNaught's foreground star (above) at mag V about 17.5,and notes the presence of another nearby star (V about 16.0) withposition end figures 00m55s.11, 41'07".5.SGR 1806-20     C. Kouveliotou, G. J. Fishman, C. A. Meegan, and K. Hagedonreport for the Compton Observatory BATSE Team:  "We have detectedtransient soft-gamma-ray emission from a region consistent with thedirection of the 'soft gamma repeater' (SGR) 1806-20.  The BATSElocation is centered at R.A. = 272 deg, Decl. = -20 deg and has anerror radius of about 4 deg.  The outburst was recorded on Sept.30.72852 UT and consists of one pulse with a triangular shape and60-ms duration (40 ms FWHM).  The spectrum of the event has anupper energy cutoff of about 100 keV, consistent with a typical SGRspectrum.  Follow-up observations of the source region at otherwavelengths are strongly encouraged. "1995 October 3                 (6242)            Daniel W. E. Green

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