α Jul 4, 2005 – Jul 4, 2006 β Jul 5, 2006 – Oct 25, 2006 γ Oct 25, 2006 – Feb 2, 2007 δ Feb 12, 2007 – Jun 14, 2007 ε Jun 14, 2007 – Oct 26, 2007 ζ Oct 26, 2007 – Apr 14, 2009 η Apr 15, 2009 – Nov 19, 2010 θ Nov 20, 2010 - May 11, 2019