The updated version of the IAU MDC database of photographic meteor orbits

The database of photographic meteor orbits of the IAU Meteor Data Centerin Lund has gradually been updated. The version 2001, which has beenprepared for distribution and which will be released soon, containscomplete orbital and geophysical data on 4581 meteors (equinox J2000.0).A new meteor identification code consisting of the publication serialnumber, the author or station code and number of the catalogue isintroduced. The verification of mutually dependent parameters has beenperformed. All the files with the pertinent documentation will be placedon a www-site to enable their free, public downloading.