Central Bureau for Astronomical Telegrams
IAUC 4442: 1987s; 1987u
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Read IAUC 4443
Circular No. 4442
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
COMET BRADFIELD (1987s)
Positions by R. H. McNaught, Siding Spring Observatory:
1987 UT R.A. (1950) Decl.
Aug. 19.49375 14 21 08.73 -21 23 37.2
19.49873 14 21 09.18 -21 23 33.3
20.47406 14 22 36.18 -21 09 50.9
20.47604 14 22 36.32 -21 09 49.0
22.41458 14 25 34.18 -20 42 46.9
22.41841 14 25 34.51 -20 42 45.8
The following parabolic elements are from 19 observations Aug.
12-22. The extended ephemeris is mainly for planning purposes.
T = 1987 Nov. 7.117 ET W = 73.672
O = 267.356 1950.0
q = 0.87094 AU i = 34.080
1987 ET R.A. (1950) Decl. Delta r m1
Sept. 2 14 43.65 -18 19.2 1.530 1.444 8.5
12 15 03.61 -16 04.4
22 15 26.39 -13 42.7 1.449 1.199 7.6
Oct. 2 15 52.05 -11 05.7
12 16 20.69 - 8 04.4 1.314 0.992 6.6
22 16 52.53 - 4 30.7
Nov. 1 17 28.06 - 0 19.6 1.130 0.878 5.7
11 18 08.32 + 4 29.5
21 18 55.27 + 9 50.1 0.940 0.907 5.4
Dec. 1 19 51.34 +15 24.7
11 20 57.41 +20 32.1 0.839 1.065 5.9
21 22 09.86 +24 13.9
31 23 20.46 +25 58.8 0.935 1.291 7.0
COMET RUDENKO (1987u)
Further precise positions have been reported as follows:
1987 UT R.A. (1950) Decl. Observer
Aug. 22.40196 14 04 14.94 +33 34 49.3 McNaught
23.22431 14 01 38.51 +33 18 40.9 Tatum
R. H. McNaught (Siding Spring Obs.). Dark plate, near edge; low.
J. B. Tatum (University of Victoria). 0.25-m reflector.
1987 August 23 (4442) Brian G. Marsden
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