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IAUC 5296: 1991q

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IAUC number 

                                                  Circular No. 5296
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


COMET LEVY (1991q)
     Further precise positions:

     1991 UT             R.A. (1950) Decl.       Observer
     June 17.44271    1 56 08.88   +15 42 17.7   Helin
          17.45660    1 56 12.66   +15 42 52.5     "
          19.06875    2 03 36.00   +16 53 46.5   Vagnozzi
          25.83166    2 35 25.40   +21 37 18.6   McNaught

E. Helin, K. Lawrence, P. Rose, and J. Alu (Palomar).  0.46-m
  Schmidt telescope.  Remeasurement of positions given on IAUC 5293.
A. Vagnozzi (Santa Lucia Stroncone).  Communicated by G. Forti.
R. H. McNaught (Siding Spring).  Uppsala Southern Schmidt telescope.

     Preliminary parabolic orbital elements by the undersigned from
nine observations, June 14-25:

     T = 1991 July  7.670 ET          Peri. =  40.741
                                      Node  = 329.596   1950.0
     q = 0.99597 AU                   Incl. =  19.232

     1991 ET      R.A. (1950) Decl.     Delta      r       m1
     July  3     3 10.39    +26 04.1    1.328    0.999     8.6
           8     3 35.31    +28 44.6
          13     4 00.44    +31 01.7    1.384    1.000     8.7
          18     4 25.52    +32 54.7
          23     4 50.26    +34 23.9    1.457    1.030     8.9
          28     5 14.41    +35 30.8
     Aug.  2     5 37.73    +36 17.3    1.538    1.086     9.3
           7     6 00.03    +36 46.0
          12     6 21.16    +36 59.4    1.620    1.163     9.7
          17     6 41.02    +37 00.3
          22     6 59.59    +36 51.2    1.699    1.255    10.1

     Total visual magnitude estimates (cf. IAUC 5293):  June 19.07
UT, 8.4 (R. Haver, Monte Autore, Italy, 15x80 binoculars); 20.14,
8.6 (M. Kidger, Tenerife, Spain, 10x50 binoculars); 21.81, 8.4 (D.
A. J. Seargent, The Entrance, N.S.W., 15x80 binoculars); 24.31, 8.7
(J. E. Bortle, Stormville, NY, 20x80 binoculars); July 1.36, 8.7 (G.
Kronk, Troy, IL, 0.33-m reflector).


1991 July 2                    (5296)             Daniel W. E. Green

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