Welcome to Yahoo Orbital Ephemeris group. I am resending this message because I just found that 9 members were "pending" and for a while I couldn't get in to approve them. Anyway we have 11 members now so that is quite satisfactory. Please have a look at the links and files areas and feel free to add your own contributions there. Remember that only 20MB of file space is allowed per group, so where possible put a link to large files that are already stored elsewhere. A good place to start is JPL http://www.jpl.nasa.gov/ and especially the Horizon page http://ssd.jpl.nasa.gov/?horizons_doc The members consist of both astronomical and astrological interests. Because there is potential for conflict there, I ask members to keep those issues out of this group as there are plenty of other places to air those subjects. We have the common interest of accurate planetary ephemeris calculations over various time scales. regards Ray