INPOP new release: INPOP13b
  Based on the use of MESSENGER radiotracking data in the construction of new Mercury ephemerides (Verma et al. 2014) a new planetary ephemerides INPOP13b was built including Mercury improvements but also improvements on the Mars orbit and on the tie of INPOP planetary ephemerides to ICRF in general. 
A. Fienga, H. Manche, J. Laskar, M. Gastineau, A. Verma
astro-ph.EP