Central Bureau for Astronomical Telegrams
IAUC 4124: 1985Q; 1985P; DRACONID METEORS 1985
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Circular No. 4124
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
Postal Address: Central Bureau for Astronomical Telegrams
Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
TWX 710-320-6842 ASTROGRAM CAM Telephone 617-495-7244/7440/7444
SUPERNOVA 1985Q IN MARKARIAN 516
R. Cohen, University of California at San Diego, reports the
discovery on Oct. 18 of a supernova of mag ~ 15 some 4" south of
the nucleus of Mk 516 (R.A. = 21h53m53s, Decl. = +7deg07'7, equinox 1950.0).
The supernova appears to be of type I. C. Clark and E. Smith
assisted in the observations using the 3-m telescope and image-
dissector scanner at the Lick Observatory.
SUPERNOVA 1985P IN NGC 1433
R. H. McNaught, Siding Spring Observatory, provides the
following precise position, measured by him from a plate taken by F.
Watson with the U.K. Schmidt telescope on Oct. 16: R.A. = 3h40m32s14,
K = -47deg22'06"2 (equinox 1950.0, uncertainty 1"). The offset from
the galaxy's nucleus is 49" east, 42" north.
A. Chalabaev, European Southern Observatory, reports that
spectrograms taken on Oct. 19 at La Silla by S. Cristiani and P.
Focardi with the 2.2-m telescope (range 480-820 nm, resolution 1
nm) and by Chalabaev and G. Vauclair with the 1.5-m telescope
(range 400-840 nm, resolution 2 nm) show the supernova to be of
type II. H-alpha and H-beta lines have P-Cyg profiles. The blue edge of
the absorption in H-alpha corresponds to an expansion velocity of ~
20 000 km/s. CCD photometry by Cristiani and A. Bosma on the
1.54-m Danish telescope gave B = 13.89 +/- 0.03, R = 13.42 +/- 0.03.
Visual magnitude estimates by McNaught: Oct. 14.54 UT, 13.7;
16.78, 13.4; 20.76, 13.5.
DRACONID METEORS 1985
Further to the note on IAUC 4120, K. Nagasawa, Earthquake
Research Institute, University of Tokyo, and Y. Kozai, Tokyo
Astronomical Observatory, confirm that an "extensive meteor display" was
recognized all over Japan, beginning in evening twilight on Oct.
8.40 UT. The visual hourly rate, initially close to 200-300,
decreased gradually, activity ceasing by Oct. 8.48. The radiant was
near Dra. J. Bortle, Stormville, NY, also reports "quite
significant activity", increasing slowly after Oct. 8.33 UT. During
the hour ending Oct. 8.42 he deduced a zenithal rate of 44, in
spite of increasing interference from morning twilight.
1985 October 25 (4124) Brian G. Marsden
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