Electronic Telegram No. 2734
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
CBAT Director:  Daniel W. E. Green; Hoffman Lab 209; Harvard University;
 20 Oxford St.; Cambridge, MA  02138; U.S.A.
e-mail:  cbatiau@eps.harvard.edu (alternate cbat@iau.org)
URL http://www.cbat.eps.harvard.edu/index.html
Prepared using the Tamkin Foundation Computer Network


NEW SATELLITES OF JUPITER:  S/2010 J 1 AND S/2010 J 2
     Brett Gladman, Department of Physics and Astronomy, University of British
Columbia, reports the discovery of two new satellites of Jupiter in irregular
orbits.  S/2010 J 1 was discovered at the Palomar 5-m Hale telescope on
2010 Sept. 7 UT by R. Jacobson, M. Brozovic, B. Gladman, and M. Alexandersen
with additional observations from the 3.5-m Canada-France-Hawaii Telescope
(CFHT) made by C. Veillet during 2010 Sept. 8-2011 Jan. 4.  S/2010 J 2 was
discovered by C. Veillet at the CFHT on 2010 Sept. 8 UT.  The Palomar team
later 'pre-covered' S/2010 J 2 in data from one night earlier that had been
acquired as part of the Palomar observations.  C. Veillet then provided
follow-up observations on 2010 Oct. 2, 9, and 30 as well as on Nov. 1.
     The following orbital elements are by G. V. Williams, Minor Planet Center
(as published with the astrometry on MPEC 2011-L06).

S/2010 J 1
Epoch 2011 Aug. 27.0 TT = JDT 2455800.5                 MPC
M  81.14924              (2000.0)            P               Q
n   0.49700522     Peri.  225.36709     -0.13609793     +0.97470090
a   0.1554289      Node   322.11421     +0.97091072     +0.16681433
e   0.3202199      Incl.  163.21859     +0.19700183     -0.14876535
P   1.98           H   16.6           P/d   724.34
From 126 observations 2010 Sept. 7-2011 Jan. 4, mean residual 0".32.

S/2010 J 2
Epoch 2011 Aug. 27.0 TT = JDT 2455800.5                 MPC
M 245.14203              (2000.0)            P               Q
n   0.61139349     Peri.   70.75815     +0.74097690     -0.60856189
a   0.1353812      Node    35.03926     -0.62856304     -0.77733298
e   0.3076065      Incl.  150.36318     +0.23635088     -0.15939219
P   1.61           H   17.5           P/d   588.82
From 86 observations 2010 Sept. 7-Nov. 1, mean residual 0".31.


NOTE: These 'Central Bureau Electronic Telegrams' are sometimes
      superseded by text appearing later in the printed IAU Circulars.

                         (C) Copyright 2011 CBAT
2011 June 1                      (CBET 2734)              Daniel W. E. Green