Central Bureau for Astronomical Telegrams

Central Bureau for Astronomical Telegrams -- Image credits

IAUC 4888: 1989S; 1989P, 1989Q, 1989R; FO And; AM Her

The following International Astronomical Union Circular may be linked-to from your own Web pages, but must not otherwise be redistributed (see these notes on the conditions under which circulars are made available on our WWW site).


Read IAUC 4887  SEARCH Read IAUC 4889
IAUC number


                                                Circular No. 4888
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
Postal Address: Central Bureau for Astronomical Telegrams
Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
Telephone 617-495-7244/7440/7444 (for emergency use only)
TWX 710-320-6842 ASTROGRAM CAM     EASYLINK 62794505
MARSDEN or GREEN@CFA.BITNET    MARSDEN or GREEN@CFAPS2.SPAN


SUPERNOVA 1989S IN IC 226
     Jean Mueller reports her discovery of a supernova in IC 226
(UGC 1922; R.A. = 2h24.8, Decl. = +27 58', equinox 1950.0).  The
SN (estimated red magnitude 19) is 10" east and 30" south of the
galaxy's center.  The discovery was made on a plate taken Oct. 29
UT with the 1.2-m Oschin Telescope in the course of the second
Palomar Sky Survey.  A spectrum obtained by J. Gunn and J. Oke on
Oct. 30 with the 5-m Hale reflector (+ 4-shooter + spectrograph)
indicates the object is a type-I supernova, 20-25 days past maximum.
The galaxy redshift is 0.037.


SUPERNOVAE 1989P, 1989Q, 1989R
     M. Turatto, E. Cappellaro, and S. Benetti, Asiago Astrophysical
Observatory, report the following photometry of some recent supernovae,
obtained with the CCD camera at the 1.82-m telescope at Cima
Ekar:  SN 1989P in NGC 6636, Oct. 2.88 UT, B = 18.83; 2.85, V =
17.71; 2.86, R = 17.48; 26.88, B = 19.50; 26.85, V = 18.63;
26.87, R = 18.46; 27.88, V = 18.62; 27.89, R = 18.47.  SN 1989Q in
anonymous galaxy, Oct. 2.96, V = 18.68; 2.98, R = 18.61; 26.96, V
= 20.05; 26.98, R = 19.49.  SN 1989R in UGC 2912, Oct. 27.10, B =
18.96; 27.11, V = 17.86; 27.12, R = 17.33; 28.08, B = 18.97; 28.10,
V = 17.92; 28.12, R = 17.37.  A noisy CCD spectrum, secured on Oct. 4
with the Boller and Chivens spectrograph, and the rapid luminosity
decline suggest SN 1989Q to be of type I.


FO ANDROMEDAE
     M. Iida, Nagano, Japan, reports that this dwarf nova is
undergoing a bright outburst, as indicated by the following visual
magnitude estimates:  Oct. 25.52 UT, [14.3; 29.48, 13.5; 30.52, 13.4.
J. A. Mattei, AAVSO, recommends high-speed photometry to determine
possible classification as an SU UMa-type variable.


AM HERCULIS
     Visual magnitude estimates (cf. IAUC 4863) by M. Verdenet,
Bourbon-Lancy, France:  Sept. 25.79 UT, 12.9; 27.81, 13.3; 30.79,
13.6; Oct. 2.79, 13.7; 3.78, 13.0; 12.79, 13.7; 16.78, 14.4;
17.77, [14.4.


1989 October 31                (4888)             Daniel W. E. Green

Read IAUC 4887  SEARCH Read IAUC 4889


Our Web policy. Index to the CBAT/MPC/ICQ pages.


Valid HTML 4.01!