Jupiter's new satellites

                                                  Circular No. 8089
 
SATELLITES OF JUPITER
     Further to IAUC 8088, S. S. Sheppard reports the discovery of
four additional satellites of Jupiter, found on CCD images taken at
Mauna Kea during Feb. 6-Mar. 7.  The astrometry, orbital elements
by B. G. Marsden, and ephemerides appear on MPEC 2003-E29:  S/2003
J 9, e = 0.27, i = 164 deg, P = 684 days, H = 17.2; S/2003 J 10, e
= 0.21, i = 164 deg, P = 768 days, H = 16.7; S/2003 J 11, e = 0.22,
i = 164 deg, P = 682 days, H = 16.8; S/2003 J 12, e = 0.38, i = 146
deg, P = 533 days, H = 17.2.  In revision to IAUC 8087, further
calculations (also given on MPEC 2003-E29) suggest alternative
retrograde orbits for S/2003 J 1 (e = 0.34, i = 163 deg, P = 783
days) and for S/2003 J 6 (e = 0.16, i = 156 deg, P = 618 days).

                      (C) Copyright 2003 CBAT
2003 March 7                   (8089)            Daniel W. E. Green


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