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                                  Daniel W. E. Green