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IAUC 4861: Poss. N IN Sct; JUPITER; 1989r

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                                                Circular No. 4861
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


POSSIBLE NOVA IN SCUTUM
     P. Wild, Astronomical Institute, Berne University, reports his
discovery on Sept. 20 (confirmed Sept. 21; mag about 10.5) of a
possible nova located at R.A. = 18h46m58.11, Decl. = -6 14'44".8
(equinox 1950.0).


JUPITER
     B. L. Lutz and C. A. Gullixson, Lowell Observatory, write:
"Narrowband images of Jupiter recorded with the Bell Laboratories
Imaging Photopolarimeter on the 1.8-m Perkins Telescope on Sept. 21
and 22 UT confirm the washing out of the latitudinal structure
in the southern hemisphere in continuum light at 604, 750, and 829
nm since 1988 (cf. IAUC 4815, 4818, 4819).  However, in the methane
bands at 619, 727, and 893 nm, which sample higher in the atmosphere
than continuum light, the latitudinal structure in the southern
hemisphere is seen, and it increases in contrast with longer
wavelength (stronger bands) to approach the levels observed in 1988
in 893-nm light.  Similarly, the Great Red Spot, not readily visible
in the images recorded in continuum light, becomes obvious in the
images recorded in the longer wavelength light of the methane bands.
Thus, these observations characterize the altitude dependence of
the morphological changes in the appearance of Jupiter's atmosphere."


COMET OKAZAKI-LEVY-RUDENKO (1989r)
     Total visual magnitude estimates (cf. IAUC 4854):  Sept. 16.84
UT, 8.9 (A. Pereira, Cabo da Roca, Portugal, 0.15-m reflector);
17.83, 8.6 (Pereira); 18.79, 8.3 (R. Haver, Tolfa, Italy, 15x80
binoculars); 20.16, 8.4 (J. V. Scotti, Tucson, AZ, 10x50 binoculars);
21.9, 8.7 (M. Kidger, Tenerife, Canary Islands, 12x50 binoculars;
apparently involved with star).


BF CYGNI
     Visual magnitude estimates (cf. IAUC 4789):  Apr. 6.6 UT, 12.2
(T. Kato, Kyoto, Japan); June 5.1, 10.9 (J. E. Bortle, Stormville, NY);
July 29.9, 10.2 (E. Schweitzer, Strasbourg, France); Aug. 12.25, 10.1
(C. Spratt, Victoria, BC); 20.90, 10.4 (S. Korth, Monheim, W. Germany);
24.88, 10.5 (Korth); 31.1, 10.3 (Bortle); Sept. 18.95, 10.4 (P.
Schmeer, Bischmisheim, W. Germany).



1989 September 23              (4861)             Daniel W. E. Green

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