Central Bureau for Astronomical Telegrams

Central Bureau for Astronomical Telegrams -- Image credits

IAUC 4768: 1989G; A0535+26; P/GUNN; 1989j; Z Cam

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 4767  SEARCH Read IAUC 4769
IAUC number

                                                  Circular No. 4768
Central Bureau for Astronomical Telegrams
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

SUPERNOVA 1989G IN MCG +2-29-11
     J. Mueller and C. Brewer report their discovery of a supernova
located 18" east and 18" south of the center of MCG +2-29-11
(R.A. = 11h11m12s, Decl. = +9 52'00", equinox 1950.0).  The supernova
appears at mag 20 on the Apr. 5 discovery plate, taken in the
course of the Palomar Sky Survey II with the 1.2-m Oschin Schmidt
Telescope.  On Apr. 7, A. Picard measured Gunn r = 18.1 with the
1.5-m Palomar reflector (+ CCD).  A spectrum taken by J. Gunn and
B. Oke on Apr. 7 with the Hale 5-m reflector (+ 4-shooter spectrograph)
indicates that the object is a type-I supernova 20 days past
maximum with high H-alpha (magnitude r = 18.9).  The galaxy redshift
is 0.027.

     F. Makino and the Ginga Team, Institute of Space and Astronautical
Science, telex:  "The x-ray astronomy satellite Ginga has detected
x-ray activity from the transient x-ray source A0535+26 on Mar. 28
with the All Sky X-ray Monitor (ASM).  The intensities are 0.25 Crab
on Mar. 28.24 and 0.33 Crab on Mar. 30.30 UT in the energy range 1 to
6 keV."

     Total visual magnitude estimates by A. Hale, Las Cruces,
NM (0.41-m reflector):  Mar. 29.32 UT, [14.0; Apr. 6.45, 12.5;
7.28, 12.6.

     Total visual magnitude estimates (cf. IAUC 4757) by Hale
(0.41-m reflector): Mar. 26.17 UT, 13.7; Apr. 3.32, 14.0; 4.18, 13.9.

     Visual magnitude estimates (cf. IAUC 4757):  Mar. 18.97 UT,
11.9 (P. Schmeer, Bischmisheim, W. Germany); 20.5, 11.9 (M. Iida,
Nagano, Japan); 23.98, 11.6 (Schmeer); 25.5, 11.7 (Iida); 27.03, 11.8
(Schmeer); 27.94, 12.0 (Schmeer); 31.14, 13.0 (P. Sventek, Houston,
TX); Apr. 1.15, 12.9 (Sventek); 6.14, 13.0 (Sventek).

1989 April 8                   (4768)             Daniel W. E. Green

Read IAUC 4767  SEARCH Read IAUC 4769

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

Valid HTML 4.01!