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IAUC 5359: 1991z; 1991t; FG Ser

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IAUC number 

                                                  Circular No. 5359
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 SHOEMAKER-LEVY (1991z)
     E. Bowell, Lowell Observatory, communicates the following precise
positions, measured by S. J. Bus, of a new comet discovered by
C. S. Shoemaker, E. M. Shoemaker, and D. H. Levy with the 0.46-m
Schmidt telescope at Palomar.  The object is described as condensed.

     1991 UT             R.A. (1950) Decl.        m1
     Oct.  2.30243    0 23 38.25   - 7 29 11.2    16
           3.30625    0 22 48.57   - 7 25 13.8


PERIODIC COMET HARTLEY 2 (1991t)
     Ephemeris from orbital elements on MPC 18598:

     1991 ET      R.A. (1950) Decl.     Delta      r       m1
     Oct. 11     9 06.46    +11 23.0    1.060    1.047     8.9
          21     9 33.52    + 7 43.5
          31     9 56.53    + 4 22.5    1.154    1.192    10.0
     Nov. 10    10 15.81    + 1 21.2
          20    10 31.51    - 1 19.8    1.201    1.369    10.9
          30    10 43.65    - 3 39.8
     Dec. 10    10 52.10    - 5 37.6    1.204    1.559    11.8
          20    10 56.64    - 7 10.8
          30    10 57.10    - 8 16.6    1.180    1.752    12.5

     Total visual magnitude estimates (cf. IAUC 5340):  Sept. 10.11
UT, 8.0 (H. Mikuz, Ljubljana, Yugoslavia, 20x60 binoculars); 18.86,
8.2 (A. Pearce, Scarborough, W. Australia, 20x80 binoculars); 20.15,
8.1 (J. Shanklin, Cambridge, England, 20x80 binoculars); 27.22, 8.6
(A. Pereira, Cabo da Roca, Portugal, 0.15-m reflector); Oct. 4.07,
8.7 (Mikuz).


FG SERPENTIS
     Visual magnitude estimates (cf. IAUC 5311):  Aug. 6.1 UT, 12.2
(J. E. Bortle, Stormville, NY); 16.90, 12.5 (E. Schweitzer,
Strasbourg, France); Sept. 3.84, 11.9 (M. Verdenet, Bourbon-Lancy,
France); 6.87, 12.3 (A. Boattini, Florence, Italy); Oct. 3.77, 11.7
(Boattini).


1991 October 4                 (5359)             Daniel W. E. Green

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