Central Bureau for Astronomical Telegrams
IAUC 5386: 1991b1
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Circular No. 5386
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
Postal Address: Central Bureau for Astronomical Telegrams
Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
Telephone 617-495-7244/7440/7444 (for emergency use only)
TWX 710-320-6842 ASTROGRAM CAM EASYLINK 62794505
MARSDEN or GREEN@CFA.BITNET MARSDEN or GREEN@CFAPS2.SPAN
PERIODIC COMET SHOEMAKER-LEVY 6 (1991b1)
Precise positions communicated by S. Nakano, Sumoto, Japan:
1991 UT R.A. (1950) Decl. Observer
Nov. 11.60903 0 18 05.51 + 5 53 32.5 Kushida
11.62361 0 18 07.69 + 5 54 47.3 "
12.46076 0 20 14.42 + 7 13 42.8 Sugie
12.46632 0 20 15.57 + 7 14 19.0 "
12.47546 0 20 16.69 + 7 15 02.9 Kojima
12.50347 0 20 20.40 + 7 17 44.7 "
12.51725 0 20 21.94 + 7 18 57.4 "
13.54571 0 22 55.02 + 8 52 28.4 Kobayashi
13.60796 0 23 03.64 + 8 57 56.4 "
Y. Kushida and R. Kushida (Yatsugatake South Base Observatory).
A. Sugie (Dynic Astronomical Observatory). 0.25-m f/3.4 Schmidt.
T. Kojima (YGCO Chiyoda Obs.). 0.25-m f/3.4 Wright-Schmidt camera.
T. Kobayashi (Oizumi). 0.16-m f/4.8 reflector + CCD.
Orbital elements by Nakano from 9 observations, Nov. 3-13:
T = 1991 Oct. 13.862 ET Peri. = 333.121
e = 0.70354 Node = 37.263 1950.0
q = 1.13207 AU Incl. = 16.821
a = 3.81861 AU n = 0.132083 P = 7.46 years
1991 ET R.A. (1950) Decl. Delta r m1
Nov. 10 0 14.09 + 3 15.2 0.252 1.190 10.6
15 0 26.52 +10 58.5
20 0 38.75 +17 17.7 0.312 1.237 11.4
25 0 50.81 +22 21.2
30 1 02.75 +26 21.4 0.393 1.295 12.2
Dec. 5 1 14.63 +29 30.9
10 1 26.48 +32 00.5 0.491 1.361 13.0
15 1 38.34 +33 59.0
20 1 50.20 +35 32.9 0.602 1.434 13.7
25 2 02.05 +36 47.6
30 2 13.89 +37 47.0 0.726 1.513 14.5
Total visual magnitude estimate by R. Keen, Mt. Thorodin, CO
(0.32-m reflector): Nov. 13.24 UT, 10.3.
1991 November 13 (5386) Daniel W. E. Green
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