Central Bureau for Astronomical Telegrams
IAUC 4392: 1987c
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Read IAUC 4393
Circular No. 4392
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)
Improved orbital elements from MPC 11845:
Epoch 1987 Mar. 26.0 ET
T = 1987 Mar. 17.3435 ET Peri. = 200.4009
e = 0.995259 Node = 175.3102 1950.0
q = 0.869380 AU i = 172.2385
1987 ET R. A. (1950) Decl. Delta r m1
May 15 21 04.03 -32 54.0 0.682 1.348 7.0
16 20 55.11 -34 04.9
17 20 45.33 -35 17.2 0.646 1.373 6.9
18 20 34.64 -36 30.4
19 20 22.94 -37 43.5 0.614 1.398 6.9
20 20 10.19 -38 55.4
21 19 56.32 -40 04.8 0.587 1.423 6.9
22 19 41.32 -41 10.2
23 19 25.20 -42 09.9 0.567 1.449 6.9
24 19 08.03 -43 02.0
25 18 49.93 -43 44.8 0.554 1.474 6.9
26 18 31.08 -44 16.8
27 18 11.74 -44 36.7 0.550 1.500 7.0
28 17 52.18 -44 43.8
29 17 32.71 -44 38.1 0.554 1.525 7.1
30 17 13.63 -44 19.8
31 16 55.20 -43 50.1 0.566 1.551 7.2
June 1 16 37.63 -43 10.4
2 16 21.08 -42 22.3 0.587 1.577 7.3
3 16 05.65 -41 27.6
4 15 51.35 -40 27.9 0.615 1.603 7.5
9 14 55.97 -35 04.8
14 14 21.16 -30 12.1 0.835 1.733 8.5
19 13 59.03 -26 20.1
24 13 44.60 -23 23.4 1.128 1.863 9.5
29 13 35.05 -21 09.8
July 4 13 28.71 -19 28.5 1.448 1.992 10.3
Further total visual magnitude estimates (cf. IAUC 4384):
May 5.47 UT, 7.4 (A. Hale, Las Cruces, NM, 10x50 binoculars);
7.67, 7.3 (G. W. Wolf, Wellington, New Zealand, 0.20-m reflector);
9.64, 7.2 (Wolf); 12.69, 7.1 (Wolf).
1987 May 14 (4392) Daniel W. E. Green
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