THE ASTRONOMER Electronic Circular No 508       1991 Apr 15 19.15UT
Ed:Guy M Hurst, 16,Westminster Close, Kempshott Rise,  Basingstoke,
Hants, RG22 4PP, England. Telephone:  (0256)471074 Int:+44256471074
Telex: 9312111261 Answerback: TA G                     JANET BOXES:
GMH at UK.AC.CAM.ASTRONOMY.STARLINK or GUYH at UK.AC.SUSSEX.CLUSTER
TELECOM GOLD: 10074:MIK2885                       PRESTEL 256471074
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SUPERNOVA 1991O IN ANONYMOUS GALAXY
J. Mueller reports her discovery of a supernova of red magnitude
about 18, located at R.A. = 14h23m33s.9, Decl. = +65 59'06".8
(1950); the galaxy's centre is located at R.A. =14h23m32s.3, Decl.
= +65 59'01".6.  The discovery plate was taken by Mueller on
Mar. 18 UT with the 1.2-m Oschin Telescope in the course of the
second Palomar Sky Survey.
IAUC 5233

NOVA HERCULIS 1991
J. A. Mattei, AAVSO, forwards photoelectric observations by
L.F. Snyder, Crystal City, NV, noting the presence of modulation
with amplitude of 0.096 mag on Mar. 30 and 0.061 mag on Mar. 31
(the durations of the observations were not long enough to
determine periodicity):  Mar. 30.466 UT, V = 9.54; 30.473, 9.47;
30.489, 9.55; 30.496, 9.51; 31.488, 9.69; 31.491, 9.65; 31.524,
9.71.
IAUC 5233
A. Izumo, Yokohama Science Center, forwards the following
photoelectric observations by O. Oshima, Kurashiki, Japan:
Apr. 1.771 UT, V = 9.74 +/- 0.02, B-V = +0.38 +/- 0.03, U-B = -0.91
+/- 0.04; Apr. 2.780, V = 10.06 +/- 0.02, B-V = +0.33 +/- 0.03, U-B
= -0.94 +/- 0.05.
IAUC 5234
Further visual estimates:
Apr 5.79, 11.5 (R.McNaught); 6.06, 10.9 (P.Schmeer); 6.07UT, 10.9
(W.Worraker); 8.08UT, 11.5 (G.Poyner); 8.81UT, 12.2 (McNaught);
9.14UT, 11.9 (A.Pereira); 10.113UT,11.7 (Schmeer); 11.090UT,12.0
(Schmeer); 12.096UT,12.0 (Schmeer); 13.02UT, 11.9pv (M.Mobberley)
13.13UT, 12.0 (Worraker); 13.16UT, 12.0 (Worraker)

SS LEONIS MINORIS
T. E. Harrison, Mt. Stromlo Observatory, reports:  "B, V, R, and I
CCD images, obtained with the Siding Spring 1.02-m telescope on
Apr. 4.5 and 5.5 UT, of the field of SS LMi show an object at the
position marked by Duerbeck (1987, Space Sci. Rev. 45, 177) for
this supposed 1980 nova. The object is fairly red, at Cousins-Kron
magnitude I about 17.7 (the object to the immediate north has I =
16.4).  Advantage should be taken of this apparent brightening to
determine the nature of this object."
IAUC 5233

BZ UMA
Stefan Korth, Germany, relays that J.Pietz, Germany has observed an
outburst of this star: Apr 10.854UT, 15.8 (Korth); 11.863, [12.6
(Pietz); 12.847, 12.1 (Pietz); 12.906, 12.2 (Pietz).

SUPERNOVA 1991N IN NGC 3310
Stefan Korth provides estimates of this object (cfE504):
Apr 2.924UT, 13.9; 3.853, 14.1; 6.049, 14.5; 10.853, 14.5;
13.044, 14.6

Guy M Hurst