Central Bureau for Astronomical Telegrams
IAUC 4380: 1987c
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Read IAUC 4381
Circular No. 4380
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 NISHIKAWA-TAKAMIZAWA-TAGO (1987c)
The following recent observations have been reported:
1987 UT R. A. (1950) Decl. Observer
Apr. 24.45729 22 29 21.35 -17 10 15.5 Briggs
24.78472 22 28 43.04 -17 19 15.1 Kojima
28.45556 22 20 46.96 -19 09 20.5 Briggs
29.45556 22 18 18.65 -19 42 38.8 "
29.45903 22 18 18.05 -19 42 46.2 "
J. Briggs (Chamberlin Observatory field station). Measured by
Briggs and E. Everhart.
T. Kojima (YGCO Hoshikawa and Nagano Stations). 0.25-m f/3.4
Wright-Schmidt.
Improved orbital elements by B. G. Marsden, Center for Astrophysics,
from 51 observations, Jan. 21-Apr. 29 (mean residual 0".9):
Epoch 1987 Mar. 26.0 ET
T = 1987 Mar. 17.3428 ET Peri. = 200.3980
e = 0.996007 Node = 175.3132 1950.0
q = 0.869688 AU i = 172.2360
1987 ET R.A. (1950) Decl. Delta r m1
May 5 22 01.20 -23 19.6 0.907 1.226 7.2
10 21 38.50 -27 33.9
11 21 32.76 -28 32.6 0.767 1.299 7.1
12 21 26.50 -29 34.0
13 21 19.68 -30 38.0 0.723 1.323 7.0
14 21 12.22 -31 44.6
15 21 04.08 -32 53.4 0.683 1.348 7.0
16 20 55.16 -34 04.2
17 20 45.40 -35 16.5 0.646 1.373 6.9
18 20 34.72 -36 29.5
19 20 23.04 -37 42.5 0.614 1.398 6.9
20 20 10.31 -38 54.4
21 19 56.46 -40 03.8 0.588 1.424 6.9
22 19 41.49 -41 09.2
23 19 25.40 -42 08.8 0.568 1.449 6.9
24 19 08.26 -43 01.0
25 18 50.19 -43 43.8 0.555 1.475 6.9
1987 April 30 (4380) Daniel W. E. Green
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