Hi Riccardo,

> exoplanet systems are growing in number and seems Kepler spacecraft
> will make them likely countless. On the other hand, exoplanet
> systems data in Guide are updated at few years ago.

True... last version was in 2005. I'll do a bit of digging around
for a good exoplanet list; the world has changed over the last five
years, and there's probably something New and Improved out there. A
quick search on 'exoplanet list' leads to several possibilities;
sadly, most appear to lack RA/dec data... but

http://exoplanets.org/exotable/exoTable.html

appears to allow for the possibility of adding RA/decs.

-- Bill