Central Bureau for Astronomical Telegrams
IAUC 4475: 1987b1
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Read IAUC 4476
Circular No. 4475
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 McNAUGHT (1987b1)
The following positions have been reported:
1987 UT R. A. (1950) Decl. m1 Observer
Oct. 9.39942 13 30 56.6 -56 15 02 10 McNaught
10.40870 13 37 12.2 -55 49 30 "
11.42300 13 43 23.7 -55 23 11 "
11.42369 13 43 25.1 -55 22 53 "
14.41749 14 00 54.5 -54 00 18 "
14.41818 14 00 55.8 -54 00 47 "
17.44338 14 17 27.0 -52 29 45 "
17.44407 14 17 29.1 -52 29 59 "
18.42429 14 22 35.3 -51 59 01 "
18.42499 14 22 37.3 -51 59 07 9 "
22.40473 14 42 17.63 -49 48 28.7 Herald
22.42637 14 42 23.67 -49 47 43.2 "
22.43725 14 42 26.79 -49 47 20.6 McNaught
22.43831 14 42 27.15 -49 47 20.0 "
R. H. McNaught (Siding Spring Observatory). Photographs with 85-mm
camera lens (Oct. 9-18) and Uppsala Southern Schmidt (Oct. 22).
D. Herald (Kambah, near Canberra).
Parabolic orbital elements from 9 observations, Oct. 10-22:
T = 1987 Dec. 11.977 ET Peri. = 17.900
Node = 260.790 1950.0
q = 0.83536 AU i = 97.049
1987 ET R. A. (1950) Decl. Delta r m1
Oct. 22 14 40.37 -50 02.2
24 14 49.70 -48 53.8 1.807 1.218 8.6
26 14 58.61 -47 43.5
28 15 07.12 -46 31.5 1.812 1.169 8.5
30 15 15.25 -45 17.9
Nov. 1 15 23.03 -44 02.9 1.818 1.122 8.3
3 15 30.47 -42 46.6
5 15 37.59 -41 29.2 1.825 1.077 8.1
7 15 44.43 -40 10.6
9 15 50.98 -38 51.0 1.831 1.034 8.0
11 15 57.28 -37 30.5
13 16 03.34 -36 09.0 1.837 0.993 7.8
1987 October 23 (4475) Daniel W. E. Green
Read IAUC 4476
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