THE ASTRONOMER Electronic Circular No 514       1991 Apr 27 15.36UT
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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V635 CAS
Gary Poyner, Birmingham, reports a brightening of this optical
counterpart of an x-ray transient/Be system (4U0115+63):
1991 Jan 2.90UT, [14.9; 3.84, 15.3; 4.88, 15.2; 7.96, 15.1;
11.00, 15.2; 11.81, 15.2; 12.81, 15.0; 13.86, 15.1; 15.82, 15.0
17.95, [14.4; 21.97, [14.4; Feb 5.86, 15.0; 11.90, [14.4;
13.81, [14.4; 16.94; 15.0; 24.82, [14.4; Mar 2.90, 15.0; 3.81,14.8
21.82, [14.4; Apr 7.84 14.8
Diane Roussel-Dupre, Los Alamos Observatory, USA advises us that
the object has also been bright in x-rays. It is planned to monitor
this object during the URA mission which has been rescheduled for
launch tomorrow Apr 28 at 11.01GMT. We are asked to monitor V635
Cas until May 6 to achieve simultaneous coverage. Please e-mail
any 1991 estimates, and further estimates daily.
The position of the object is: RA 01h15m14s DEC +63 28.6'(1950).
TA chart current reference 900421.

SV SAGITTAE
Further to the note on E511, a further fade has taken place:
Apr 16.11UT, 13.4 (Poyner); 20.09, 13.6 (Poyner); 23.07, 13.9
(Poyner); 23.91, 14.4 (Timo Kinnunen, Finland). Professional
astronomers plan to use the INT to observe it but ask we
provide continuous coverage on this star.

PERIODIC COMET FAYE (1991n)
S. Nakano, Sumoto, Japan, reports the recovery of this comet by
T. Seki, Geisei, as given below.  The comet has a small coma.  The
indicated correction to the prediction on MPC 13042 (ephemeris on
MPC 17840) is Delta(T) = -0.01 day.
     1991 UT             R.A. (1950) Decl.        m1
     Apr. 16.79861   21 59 22.99   - 4 36 56.3   18.5
          19.80816   22 04 06.88   - 4 08 44.5   18.0
IAUC 5246

SUPERNOVA 1991U IN IC 4232
J. Maza, University of Chile; and M. M. Phillips, Cerro Tololo
Interamerican Observatory, telex:  "Roberto Antezana (University of
Chile) has discovered a supernova 3" west and 6" north of the
nucleus of the spiral galaxy IC 4232
(R.A. = 13h20m37s, Decl. = -25 51'.0,equinox 1950.0). The supernova
(mpg about 16) was found on a 20-min IIa-O plate taken by M. Hamuy
and L. Wells with the CTIO Curtis Schmidt telescope on Apr.18.20UT,
and was also recorded on a T-Max film taken by Hamuy and Wells with
the Curtis Schmidt on Apr. 19.23. A CCD spectrum covering the
wavelength range 360.0-680.0 nm obtained on Apr. 20.2 by Phillips
with the CTIO 4.0-m telescope shows that this is a type-Ia
supernova about 11 days past blue maximum.  A spectrum of the
nucleus of IC 4232 yields a redshift of 0.032."
IAUC 5247

Guy M Hurst