Central Bureau for Astronomical Telegrams

Central Bureau for Astronomical Telegrams -- Image credits

IAUC 4236: 1986i; 1982i

The following International Astronomical Union Circular may be linked-to from your own Web pages, but must not otherwise be redistributed (see these notes on the conditions under which circulars are made available on our WWW site).

Read IAUC 4235 SEARCH Read IAUC 4237
IAUC number 

                                                  Circular No. 4236
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 CHURYUMOV-SOLODOVNIKOV (1986i)
     Yu. V. Batrakov, Institute for Theoretical Astronomy,
Leningrad, communicates the following precise positions:

    1986 UT           R.A.  (1950.0)  Decl.     m1   Observer

    July 15.89216   21 51 13.98   -13 02 00.9   13   Churyumov
         15.90031   21 51 13.16   -13 02 19.4          "
         17.97564   21 47 05.94   -14 18 00.9   14   Chernykh
         18.98970   21 45 01.00   -14 55 27.8   14     "
         18.99317   21 45 00.75   -14 55 36.9          "

K. I. Churyumov (Coronal Station, near Alma Ata).
N. S. Chernykh (Crimean Astrophysical Observatory).

     Parabolic orbital elements from eight observations July 15-20:

           T = 1986 May 9.46 ET  Peri. = 158.75
                                 Node  = 133.93   1950.0
           q =   2.6523 AU       Incl. = 115.08

     1986 ET     R.A. (1950.0) Decl.      p        r       m1

     July  9    22 03.56    - 9 02.4    1.902    2.728    12.8
          14    21 54.83    -11 54.2
          19    21 45.00    -14 55.7    1.815    2.754    12.7
          24    21 34.13    -18 03.3
          29    21 22.36    -21 12.3    1.784    2.784    12.7
     Aug.  3    21 09.87    -24 17.7
           8    20 56.92    -27 14.5    1.816    2.818    12.8


PERIODIC COMET HALLEY (1982i)
     A. Tokunaga, University of Hawaii, reports the following
infrared observations (errors < 0.1 mag) by D. Griep and C. Kaminski
at the NASA Infrared Telescope Facility (7"3 aperture): July 6.3 UT,
[1.25 microns] 12.2, [1.65 microns] = 11.9, [2.20 microns] = 11.8, [3.45
microns] = 11.5, [3.80 microns] = 11.8; July 8.3, [10.1 microns] = 4.2.

     Total visual magnitude estimates: June 25.09 UT, 8.9 (D. W. E.
Green, 0.20-m reflector, Harvard, MA); 28.05, 8.1 (V. F. de Assis
Neto, 10 x 70 binoculars, Sao Francisco de Oliveira, Brazil); July
2.18, 9.0 (R. A. Keen, 0.32-m reflector, Mt. Thorodin, CO); 7.91,
8.6 (de Assis Neto); 9.72, 10.2 (R. Fleet, 0.35-m reflector,
Harare, Zimbabwe; tail 0.3 deg in p.a. 109); 13.70, 10.7 (Fleet).


1986 July 23                   (4236)              Brian G. Marsden

Read IAUC 4235 SEARCH Read IAUC 4237

Our Web policy. Index to the CBAT/MPC/ICQ pages.

Valid HTML 4.01!