Central Bureau for Astronomical Telegrams
IAUC 4920: 1989c1; 1989U; 3C 368
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Read IAUC 4921
Circular No. 4920
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
COMET AUSTIN (1989c1)
The following additional precise positions have been reported:
1989 UT R.A. (1950) Decl. m2 Observer
Dec. 7.42061 0 50 48.29 -61 58 33.7 14.0 Gilmore
7.42536 0 50 47.81 -61 58 28.2 "
7.44619 0 50 45.54 -61 58 05.3 "
7.59306 0 50 31.09 -61 55 21.7 Jekabsons
7.67083 0 50 23.23 -61 53 55.1 "
A. C. Gilmore and P. M. Kilmartin (Mount John University Obs.).
P. Jekabsons and G. Lowe (Perth Observatory, Bickley).
Communicated by M. P. Candy.
SUPERNOVA 1989U IN UGC 5295
Jean Mueller reports her discovery of an apparent supernova
in UGC 5295 (MCG +07-20-073; R.A. = 9h49m.8, Decl. = +43 05',
equinox 1950.0), found on a Dec. 7 plate taken with the 1.2-m
Oschin Schmidt Telescope in the course of the second Palomar Sky
Survey. The object has red magnitude about 17, is located 20"
west and 47" north of the galaxy's center, and does not appear on
prints from the first Palomar Sky Survey.
3C 368
F. Hammer, O. Le Fevre, and D. Proust, Observatoire de Paris,
Meudon, and Canada-France-Hawaii Telescope Corporation, telex: "The
well-known radio galaxy 3C 368 (z = 1.132) has been discovered to be
a gravitational lens from 3 hr of integration obtained in a high-
spatial-resolution spectroscopic mode at the Canada-France-Hawaii
Telescope in July. Data analysis shows that one of the subcomponents
of the object is the only one to show a strong continuum,
indicating the presence of a foreground elliptical galaxy with a
probable redshift of 0.57 based on absorption line features in the
continuum (a redshift of 0.81 may be an alternative). A low
mass/luminosity ratio is sufficient for the foreground elliptical
galaxy to be able to gravitationally split the background object
into the multiple images observed. All other data available on this
object seem to be in agreement with the gravitational lens hypothesis."
1989 December 8 (4920) Daniel W. E. Green
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