Translation of Some Star Catalogs to the XEphem Format

This bundle of Java programs converts star catalogs to the format of the XEphem visualiser. The currently supported input catalog formats are (i) the orbital elements of the Minor Planet Center (MPC) of the International Astronomical Union (IAU), (ii) the Hipparcos main catalog or the variants of the Tycho-1 or Tycho-2 catalogs, (iii) the systems in the Washington Double Star catalog, (iv) the Proper Motions North and South catalogs, (v) the SKY2000 catalog, (vi) the 2MASS catalog, (vii) the Third Reference Catalog of Bright Galaxies (RC3), (viii) the General Catalogue of Variable Stars (GCVS v. 5). (ix) the Naval Observatory CCD Astrograph Catalog (UCAC4), (x) the USNO catalog digitized by the PMM (USNO SA2), (xi) data releases of the Gaia source catalog (optionally also converted to the TPOINT format).