THE ASTRONOMER Electronic Circular No 613       1992 Feb 27 19.50UT
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                     JANET BOXES:
GMH at UK.AC.CAM.ASTRONOMY.STARLINK or GUYH at UK.AC.SUSSEX.CLUSTER
TELECOM GOLD: 10074:MIK2885                       PRESTEL 256471074
-------------------------------------------------------------------
ON 231
E. Massaro, R. Nesci, and G. C. Perola, Astronomical Institute,
Rome University; and D. Lorenzetti and L. Spinoglio, Istituto
Fisica dello Spazio Interplanetario, CNR, Frascati, communicate:
"We observed the BL Lac object ON 231 (W Com) with the TIRGO
telescope on Gornergrat Mountain.  From a literature search, the
object is at its highest brightness level observed since 1972.
Johnson magnitudes were as follows on Feb. 2:  B = 15.11 +/- 0.03,
V = 14.59 +/- 0.04; K = 11.31 +/- 0.02.  No significant flux
variations were detected over six days.  Further observations of
this source are encouraged."
IAUC 5458
Editor:
This object is located at:
RA 12h 18.6m DEC +28 29'(1950). A 'C' paper chart has been added
to the existing 'B' chart and a photoelectric sequence to V=17.0
used. Part of this has been incorporated into the following
e-mail version for use with FINDERS.EXE:
\\\\\\ON 231             = W Com    =QSO1219+285
S,120,10,S
P,12h 18.6m  +28 29'  (1950)
O,60,60,14.5,16.5V
R,12.08,62,65,A
R,13.08,36,65,B
R,13.51,65,21,C
R,14.82,56,45,D
R,15.60,34,73,E
-S,TA920227
M,10,86,89
M,12,117,116,15,15
M,13,76,103,31,84
M,14,18,39,89,37,31,15,32,22
M,15,101,119
M,16,86,85,110,23,119,97
E,19
////// Basic chart automatically generated by GSC2FIND ver 1.1

NOVA CYGNI 1992
P. Garnavich, Dominion Astrophysical Observatory, reports:  "A
spectrogram of Nova Cyg 1992, centered at 482.0 nm and covering 50
nm (resolution 0.06 nm FWHM), was obtained on Feb. 22.58 UT with
the DAO 1.2-m telescope.  H-beta shows a P-Cyg emission profile
with two strong absorption components at -910 and -1670 km/s.
Singly ionized iron lines at 492.4 and 501.8 nm are also seen with
P-Cyg profiles.
The spectrum is very similar to the principal spectrum of Nova Cyg
1978 (V1668 Cyg; Klare, Wolf, and Krautter 1980, A.Ap. 89, 282) one
day after maximum."
Herman Mikuz, Ljubljana, Slovenia, forwards the following
photometry obtained by A. Dolzan, Litija, Slovenia, with a 0.32-m
reflector:  Feb. 24.170 UT:  V = 4.38 +/- 0.02, B-V = +0.49 +/-
0.02.

Guy M Hurst