Central Bureau for Astronomical Telegrams
IAUC 4126: 1985o; 1982i; N Sco 1985
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Circular No. 4126
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
PERIODIC COMET KOJIMA (1985o)
This comet has been recovered by T. Gehrels and J. V. Scotti
with the SPACEWATCH camera 0.91-m telescope at Kitt Peak. The indicated
correction to the prediction on MPC 8274 is Delta-T = -0.02 day.
1985 UT R.A. (1950.0) Decl. m1
Oct. 19.49512 7 51 49.12 +20 07 35.8 20
19.50941 7 51 50.12 +20 07 32.6
PERIODIC COMET HALLEY (1982i)
T. Hua and B. Grundseth, Canada-France-Hawaii Telescope; and
J. M. Pasachoff and E. Ladd, Hopkins Observatory, report observations
of P/Halley on Oct. 23.3 UT with the photon-counting camera
at the f/8 Cassegrain focus of the 3.6-m CFHT on Mauna Kea. Images
with the CN (387.1 nm) filter show diffuse emission with central
area 30" in size. Continuum emission through a 0.8-nm filter at
500.7 nm and a 0.47-nm H-alpha filter fills the field and is more peaked
as is CO+ emission through the 426-nm P/Halley standard filter.
M. F. Schroder, M. Pastoriza, H. Dottori, S. O. Kepler, T. S.
Bergmann, J. R. Ducati, S. H. B. Livi, A. Schmidt, C. Bonatto and
R. D. D. Costa, Departamento de Astronomia, Universidade Federal
do Rio Grande do Sul, Brazil, find B = 15.3 and V = 14.8 (both +/-
0.2, total magnitude) on Sept. 22.29 UT from plates taken at the
1.6-m telescope of the Observatorio Astrofisico Brasileiro. H.
Kosai, Tokyo Astronomical Observatory, reports V = 14.0 with a 30"
diaphragm on the 0.91-m Okayama telescope on Sept. 13.67 UT.
Total visual magnitude estimates: Oct. 7.39 UT, 11.0 (J.
Bortle, Stormville, NY, 0.32-m reflector); 10.94, 11.0 (J.-C.
Merlin, Le Creusot, France, 0.40-m reflector); 14.52, 10.8 (K.
Krisciunas, Hilo, HI, 0.15-m reflector); 17.95, 10.2 (M. Cavagna,
Valcava, Italy, 20 x 80 binoculars); 20.40, 9.1 (R. Keen, Mt.
Thorodin, CO, 8 x 40 binoculars); 24.38, 8.5 (D. W. E. Green, Oak
Ridge Observatory, 20 x 80 binoculars).
NOVA SCORPII 1985
Visual magnitude estimates by R. H. McNaught, Coonabarabran,
N.S.W.: Oct. 9.49 UT, 11.2:; 10.44, 11.2; 11.43, 11.3; 14.47, 11.3,
17.44, 10.7; 18.42, 11.1; 19.45, 11.8.
1985 October 25 (4126) Brian G. Marsden
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