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

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                                                  Circular No. 6242
Central Bureau for Astronomical Telegrams
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)
Phone 617-495-7244/7440/7444 (for emergency use only)

     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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