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IAUC 2732: JUPITER XIII; ROMAN NUMERAL DESIGNATIONS OF COMETS IN 1973

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IAUC number 

                                                  Circular No. 2732
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
Postal Address: Central Bureau for Astronomical Telegrams
Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
Cable Address: SATELLITES, NEWYORK
Western Union: RAPID SATELLITE CAMBMASS


JUPITER XIII
     Dr. Elizabeth Roemer, University of Arizona, communicates the
following precise position, obtained by L. M. Vaughn and herself
with the Steward Observatory's 229-cm reflector on Kitt Peak.
Measurer: Carolyn C. McCarthy.  Some of the reference stars (from
the Astrographic Catalogue) show large residuals.

     1974 UT             R. A. (1950) Decl.
     Nov.  9.23420    22 36 58.36   - 9 42 50.3

     The following improved jovicentric elements (with the angular
elements referred to the ecliptic), by K. Aksnes, Center for
Astrophysics, Harvard and Smithsonian Observatories, satisfy the
eight available observations within 1".5.  Perturbations by the sun,
Saturn and the earth were taken into account. The uncertainty in P
is judged now to be not more than a few days.

       T = 1974 June 27.777 ET    Epoch = 1974 Sept. 10.0 ET
   Peri. = 205.706                    e =   0.24443
   Node  = 250.080   1950.0           a =   0.06822 AU
   Incl. =  28.767                    n =   1.7090
       q =   0.05155 AU               P = 210.6 days


ROMAN NUMERAL DESIGNATIONS OF COMETS IN 1973

   Comet        T         Name                Year/letter  Ref.
   1973  I  Jan. 25.2  P/Gehrels 1               1972k   IAUC 2545
        II  Feb. 12.3  Kojima                    1972j   IAUC 2649
       III  Mar. 11.6  Huchra                    1973h   * 15, **
        IV  Mar. 21.3  P/Reinmuth 1              1972i   * 14, 406
         V  May  24.9  P/Clark                   1973i   * 15, **
        VI  May  30.1  P/Tuttle-Giacobini-Kresak 1973b   * 15, **
       VII  June  7.2  Kohoutek                  1973e   IAUC 2646
      VIII  July  2.8  P/Wild                    1973c   IAUC 2490
        IX  Aug. 10.1  Gibson                    1973o   IAUC 2664
         X  Nov.  8.2  Sandage                   1973k   IAUC 2699
        XI  Dec.  1.5  P/Gehrels 2               1973n   IAUC 2689
       XII  Dec. 28.4  Kohoutek                  1973f   IAUC 2684

* Quarterly Journal of the Royal Astronomical Society.  ** In press.


1974 December 18               (2732)              Brian G. Marsden

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