Central Bureau for Astronomical Telegrams
IAUC 3617: Poss. COMET GONZALEZ; (843); NOTICE RE Tlgms
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Circular No. 3617
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 617-864-5758
POSSIBLE COMET GONZALEZ
J. Maza, Department of Astronomy, University of Chile, telexes
that Luis E. Gonzalez has discovered a cometary trail on two plates
obtained with the Maksutov astrograph at the Cerro El Roble station
as follows:
1981 UT R. A. (1950) Decl. m1
June 29.26389 0 08 28.40 -51 24 16.2 15
29.30972 0 08 30.32 -51 26 12.6
The corresponding daily motion is dR.A. = +0m.70, dDecl.= -42'.
The object is diffuse, with condensation but without tail.
(843) NICOLAIA
This minor planet, lost since its discovery in 1916, was reobserved
during 1981 May 28-June 9 at the European Southern Observatory
by H.-E. Schuster. The position was some 75' from a prediction
by L. D. Schmadel, Astronomisches Rechen-Institut. The following
ephemeris is from an orbit fitted by Schmadel to the observations
in 1916 and 1981. Further details will be given on the
MPCs for Aug. 1.
1981 ET R. A. (1950) Decl. Delta r Mag.
July 15 16 06.74 -35 22.9 1.088 1.928 17.1
25 16 08.83 -34 38.7
Aug. 4 16 15.25 -33 59.8 1.211 1.892 17.5
14 16 25.56 -33 27.3
24 16 39.18 -32 59.5 1.362 1.862 17.8
Sept. 3 16 55.63 -32 33.7
13 17 14.45 -32 07.0 1.527 1.837 18.0
NOTICE CONCERNING TELEGRAMS
It is once again an 'open season' for making changes in the
list of subscribers to the Central Bureau's telegram service.
Subscribers who wish to make address changes, category changes, etc.,
are requested to inform us of said changes by Aug. 31. At that
time a concerted effort will be made to try alleviate some of
the problems affecting service outside North America (cf. IAUC 3536);
the offer for direct, express, surcharged service still holds.
1981 July 22 (3617) Brian G. Marsden
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