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IAUC 6502: 1996bq, 1996br,, 1996bs; PSR B0656+14; 1996bk

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                                                  Circular No. 6502
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)


SUPERNOVAE 1996bq, 1996br, AND 1996bs
     C. Pollas, Observatoire de la Cote d'Azur (OCA), reports his
discovery of two additional apparent supernovae on a panchromatic
OCA film taken on Nov. 3.9 UT (limiting magnitude V about 22) for
confirming SN 1996bq (cf. IAUC 6500), which faded by about 0.2 mag
between Nov. 3.9 and 7.0.
     SN 1996br is located at R.A. = 2h34m53s.53, Decl. =
+41o07'13".7 (equinox 2000.0), which is 1".6 east and 7".6 north of
the center of UGC 2058; nothing was present at the position to V =
20.5 on OCA films taken on Oct. 12.1, to mag 22 on a 1995 OCA film,
or on the original Palomar Sky Survey.  Estimated magnitudes for SN
1996br:  Nov. 3.9, V = 18.5; 7.0, 19.1.  A nearby star star (V
about 18.0) has position end figures 52s.03, 06'47".7.
     SN 1996bs is located at R.A. = 2h44m46s.30, Decl. =
+39o29'26".5, which is 4".1 east and 0".3 north of the anonymous
host galaxy.  SN 1996bs superimposes a faint red condensation
visible sometimes at mag V about 20.5, but the 1995 OCA film
(limiting mag about 22) suggests that SN 1996bs is indeed a new
star.  Estimated magnitudes for SN 1996bs:  Nov. 3.9, V about 19.0;
7.0, 18.7.  A nearby star (V about 18.0) has position end figures
46s.54, 34".7.


PSR B0656+14
     A. Shearer, R. M. Redfern, G. Gorman, R. Butler, P. O'Kane,
and A. Golden, University College Galway; G. M. Beskin, S. I.
Neizvestny, V. V. Neustroev, and V. L. Plokhotnichenko, Special
Astrophysical Observatory, Nizhnij Arkhyz; and M. Cullum, European
Southern Observatory, Garching, communicate:  "We observed PSR
B0656+14 on Jan. 14--15 with the 6-m telescope (+ TRIFFID camera
and MAMA detector) and found optical pulsations in wavelength band
B (mag B = 26.4).  The significance of the result was 0.2 percent
using the phase-independent Rayleigh statistics and 0.01 percent
from studies of the Fourier power spectrum.  The lightcurve showed
a peak in phase with gamma-ray data, and with a lag of 0.2 from the
peak of the radio signal.  Our pulsed magnitude is consistent with
100 percent of the signal being pulsed."


SUPERNOVA 1996bk IN NGC 5308
     Visual magnitude estimates (cf. IAUC 6491):  Oct. 20.18 UT,
14.1 (J. Carvajal, Teruel, Spain); Nov. 1.91, 14.0 (J. M. San Juan,
Teruel, Spain); 2.81, 14.3 (Carvajal).

                      (C) Copyright 1996 CBAT
1996 November 7                (6502)            Daniel W. E. Green

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