Authors: Alexandersen M., Gladman B., Veillet C., Jacobson R., Brozovic M., and Rousselot P.
%F: AA(Department of Physics and Astronomy, 6224 Agricultural Road, University of British Columbia, Vancouver BC, Canada mikea@astro.ubc.ca), AB(Department of Physics and Astronomy, 6224 Agricultural Road, University of British Columbia, Vancouver BC, Canada ), AC(Canada-France-Hawaii Telescope Corporation, P.O. Box 1597, Kamuela, HI 96743, USA ), AD(Jet Propulsion Laboratory, California Institute of Technology, 4800 Oak Grove Drive, Pasadena, CA 91109-8099, USA ), AE(Jet Propulsion Laboratory, California Institute of Technology, 4800 Oak Grove Drive, Pasadena, CA 91109-8099, USA ), AF(Institut UTINAM, CNRS-UMR 6213, Observatoire de Besanæ®®, BP 1615, 25010 Besanæ®® Cedex, France)
Title: Discovery of Two Additional Jovian Irregulars
Abstract: We report on the discovery of two previously undetected irregular satellites of Jupiter (S/2010 J 1 and S/2010 J 2) during recovery observations of other known satellites. S/2010 J 1 was discovered with the Palomar 200 inch Hale telescope on September 7 UT of 2011, while S/2010 J 2 was discovered on September 8 with the 3.5 m Canada-France-Hawaii Telescope. The satellites have r-band magnitudes of 23.2 0.3 and 24.0 0.3, for S/2010 J 1 and S/2010 J 2, respectively, indicating diameters of ~2-3 km. Both S/2010 J 1 and S/2010 J 2 are on bound retrograde orbits. Time-averaged integrated orbits suggest the association to the Carme and Ananke groups, respectively. Given that the satellites were discovered within a small field during the routine observations of the previously known irregulars, their discovery agrees with predictions that other moons of similar sizes remain undetected in the Jovian Hill sphere.
Keywords: CCD, data, faint, Jupiter, observation, position, small
Journal: The Astronomical Journal
Volume: 144
Number: 1
Pages: 21
Year: 2012
Bibliogaphic Code: 2012AJ....144...21A
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