Central Bureau for Astronomical Telegrams
IAUC 3513: 1980m; 1980l
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Read IAUC 3514
Circular No. 3513
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
PERIODIC COMET HARRINGTON (1980m)
M. P. Candy, Perth Observatory, reports that P. Jekabsons has
recovered this comet as follows:
1980 UT R. A. (1950) Decl. m1
Sept. 4.49653 17 27 28.93 -22 05 00.8 18-19
8.50451 17 31 54.94 -22 29 01.2
9.51042 17 33 06.46 -22 35 12.1
Measurements were made by H. McMay and J. Johnston. The object is
described as diffuse with condensation, nothing reported about a
tail. The Sept. 8 measurement was difficult due to interference
from nearby stars. Calculations reveal a correction to the elements
by G. Sitarski (1973, Acta Astron. 23, 170ff.) of Delta-T = +0d.60.
COMET RUSSELL (1980l)
K. Russell, U. K. Schmidt Telescope Unit, provides the following
precise positions:
1980 UT R. A. (1950) Decl. m1
Sept. 6.71181 3 13 36s29 -35 04 41.6 17
6.75694 3 13 33.73 -35 06 20.7
7.58027 3 12 49.20 -35 36 58.3 17
7.59416 3 12 48.52 -35 37 27.2
8.78509 3 11 39.52 -36 22 11.4 17
8.79898 3 11 38.88 -36 22 39.9
The following parabolic orbital elements, by the undersigned,
satisfy the above observations to within 1".6:
T = 1981 Feb. 17.87 ET Peri. = 283.78
Node = 230.31 1950.0
q = 2.4233 AU Incl. = 127.23
1980 ET R. A. (1950) Decl. Delta r m1
Sept.12 3 08.17 -38 24.7 2.364 2.973 16.9
16 3 02.92 -41 00.4
20 2 56.55 -43 37.9 2.284 2.925 16.8
24 2 48.92 -46 15.1
28 2 39.88 -48 49.7 2.236 2.879 16.6
Oct. 2 2 29.30 -51 19.0
1980 September 11 (3513) Daniel W. E. Green
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