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IAUC 2703: Prob. NEW Sat OF JUPITER; NOTICE TO SUBSCRIBERS OUTSIDE NORTH AMERICA

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IAUC number


                                                  Circular No. 2703
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


PROBABLE NEW SATELLITE OF JUPITER
     Dr. Elizabeth Roemer, University of Arizona, communicates the
following semiaccurate positions, scaled by her of images found by
Carolyn McCarthy on plates exposed by R. Weymann, R. Cromwell and
R. McCallister with the Steward Observatory's 229-cm reflector on
Kitt Peak; the 1.5-min exposures were taken through a 140-mm image
tube.

     1974 UT          R. A. (1950) Decl.
     Sept.23.30968   22 44.97    - 9 26.3
          23.33772   22 44.96    - 9 26.4

     Computations by K. Aksnes and B. G. Marsden suggest that this
object is indeed the same object reported on IAUC 2702; and while
the five positions can be represented by heliocentric orbits having
a > ~6 AU, it still seems more probable that the object is a new
Jovian satellite, perhaps instead a member of the 'middle' group
having direct orbits.  Observations are still urgently desired.  In
the following ephemeris it is presumed that the object is a satellite
in a direct orbit.

     1974 ET     R. A. (1950) Decl.     dR.A.   dDecl.
     Sept.30    22 42.17    - 9 37.7    -4m52   -18'0
     Oct.  5    22 40.37    - 9 44.5    -4.46   -14.1
          10    22 38.86    - 9 49.6    -4.33   -10.1
          15    22 37.66    - 9 53.0    -4.17   - 6.1
          20    22 36.78    - 9 54.7    -3.96   - 2.2
          25    22 36.22    - 9 54.6    -3.73   + 1.6
          30    22 36.00    - 9 52.7    -3.48   + 5.3


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1974 October 1                 (2703)              Brian G. Marsden

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