Central Bureau for Astronomical Telegrams
IAUC 4802: 1989M; 3C 279; 1989L
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Read IAUC 4803
Circular No. 4802
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 1989M IN NGC 4579
E. K. Kharadze, Abastumani Observatory, and Yu. P. Pskovsky,
Sternberg Astronomical Institute, telex the discovery by G. N.
Kimeridze of a supernova in NGC 4579 (M58; R.A. = 12h35m.1,
Decl. = +12 05', equinox 1950.0). The June 28.82 UT discovery
plate shows the object at mpv = 12.2 and located 40" west and 33"
north of the galaxy's center.
M. Turatto and E. Cappellaro, Asiago Astrophysical Observatory,
report that SN 1989M is at R about 13.0 (offset 40" west, 21" north
of the galaxy's center) on a CCD frame secured by F. La Franca with
the 1.82-m telescope on July 5.89 UT under poor weather conditions;
a Schmidt plate taken about the same time yields B about 13.5.
A. V. Filippenko, University of California at Berkeley,
reports that the Berkeley Automated Supernova Search Team obtained
an image of SN 1989M on July 4 at mag about 12.5, giving the offset
from the galaxy's nucleus as 39" west, 27" north (+/- about 2")
and noting that there is a foreground star visible nearby; their
previous image of the field, obtained June 19, showed nothing
present at the position of the SN. A. Dey, also of Berkeley,
secured a spectrum (range 420-730 nm, resolution 1 nm) of SN
1989M on July 6 with the 1-m Nickel reflector at Lick Observatory.
A verbal description of the spectrum indicates that the object is
of type Ia, near maximum brightness. The broad 615-nm absorption
trough is very strong.
3C 279
F. Makino and T. Kii, Institute of Space and Astronautical
Science; and T. Ohashi, Department of Physics, University of Tokyo,
communicate: "We obtained x-ray observations of the quasar 3C 279
with the satellite Ginga on June 22 and 23. The photon index and
the energy flux were 1.68 +/- 0.10 and (1.9 +/- 0.2) x 10E-11
erg/cm2/s, respectively, in the energy range 2-30 keV. This
intensity is lower than that of 1989 January (IAUC 4736) and
same level as that observed in 1987 July (IAUC 4626)."
SUPERNOVA 1989L IN NGC 7339
Visual magnitude estimates: June 10.47 UT, 15.5: (D.
Patchick, Culver City, CA); 29.33, 16.4 (R. Bunge, Mansfield, OH).
1989 July 6 (4802) Daniel W. E. Green
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