Reference
For history and detail on astorb.dat and the astorbDB structure see the astorbDB citation
Lowell Observatory maintains database of asteroid orbital and physical
properties known historically as astorb.dat. This flat file continues to be maintained and is accessible
at https://asteroid.lowell.edu/main/astorb/. Since 2015, there
has been an ongoing effort to mature the astorb.dat into a modern relational database. This database, known as
astorbDB expands the capabilities of the historic flat file and underlies many of the tools on
https://asteroid.lowell.edu/.
Though astorb.dat will continue to be maintained and accessible, astorbDB is significantly more
flexible and powerful and is the recommended channel for accessing data. https://asteroid.lowell.edu/ is a good place
to start for querying common data. For example, see AstEph for ephemeris
or AstInfo for physical parameters. A more advanced data query
tool is the QueryBuilder which provides a graphical interface
for querying accross most astorbDB tables. Finally, for the most advances and programatic use cases, a
GraphQL API is available to perform queries.
For history and detail on astorb.dat and the astorbDB structure see the astorbDB citation