THE ASTRONOMER Electronic Circular No 723 1993 Apr 02 20.20UT
Ed:Guy M Hurst, 16,Westminster Close, Kempshott Rise, Basingstoke,
Hants, RG22 4PP,England. Telephone/FAX(0256)471074 Int:+44256471074
TELEX: 9312111261 Answerback: TA G TELECOM GOLD: 10074:MIK2885
GMH at UK.AC.RUTHERFORD.STARLINK.ASTROPHYSICS STARLINK: RLSAC::GMH
GMH at UK.AC.CAM.ASTRONOMY.STARLINK STARLINK: CAVAD::GMH
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POSSIBLE NOVA IN OPHIUCHIUS
Paul J. Camilleri, Cobram, Victoria, Australia, has e-mailed us to
report his discovery of a possible nova on 85mm + T-Max film patrol
photographs at:
R.A. = 17h 28.9m Decl. = -22d 46' (1950).
The following magnitude estmates are by Camilleri:
1993 March 29.72 [12pv; 1993 April 01.77 ~10.5pv (two photographs).
The position is measured from Atlas Stellarum and is accurate in RA
+/- 6" and in Decl. +/- 1'. There is no image on Atlas Stellarum to
a limiting magnitude of 14 (1970 April 6) and no image on Union
Observatory Prints to a limiting magnitude of 14 (1925 August 20).
SUPERNOVA 1993G IN NGC 3690
Due to the loss of an IAUC in transmission discovery details of
this object have only just become available:
R.R.Treffers et al, University of California at Berkeley report the
discovery of an apparent supernova in NGC 3690 (RA 11h25m44.2s DEC
+58 50'23"[1950]). The object is located 1.5" west and 15" south
of the galaxy's eastern, relatively diffuse condensation. The
discovery image was obtained on Mar 5. Data on Mar 6.26 yield
R=16.6 for the supernova.
IAUC 5718
PERIODIC COMET FORBES (1993f)
M. P. Candy, Perth Observatory, reports the recovery of this comet
from his measurements on plates taken by G. Lowe with the 0.33-m
astrograph:
1993 UT R.A. (2000) Decl. m1
Mar. 21.84583 21 27 52.66 -18 45 17.1 14
21.88750 21 27 59.93 -18 44 37.2
27.85729 21 46 38.68 -16 58 02.3
On the first night the comet had a central condensation 5" across
and a 1' tail to the southwest. The indicated correction to the
prediction on MPC 16379 is delta T = +0.04 day.
IAUC 5728
SUPERNOVA 1993I IN MCG +02-32-144
C. Pollas, Observatoire de la Cote d'Azur, reports his discovery
of a possible supernova of mag 18.0 at R.A. = 12h32m10s.50, Decl. =
+9D16'39".2 (equinox 1950.0), 13".8 west and 8".6 south of the
center of the S0 galaxy (B = 14.9) MCG +02-32-144. The object was
found on films taken by D. Albanese and himself on Mar. 23.03 and
25.01 UT. It was also present at mag 21 on Mar. 17.02 UT but is
not visible in the Palomar Sky Survey. SN 1960B also appeared in
this galaxy.
IAUC 5728
SU TAURI
Numerous observers had reported unusual activity in this R-CrB
variable in the last month but estimates now show a clearly defined
full fade. John Toone, Shrewsbury, reports the star was at 12.4v
on 1993 Apr 1.852,