{
  "pm_err_mina": "minor axis of the error ellipse",
  "dim_qual": "quality (A: best, .., E: worst)",
  "rot": "Stellar Rotational Velocities",
  "gj": "Gliese Jahreiss Nearby Stars (Catalog of stars within 20 parsecs of the Sun)",
  "plx_qual": "parallax quality (A:astrometric, .., E:unknown)",
  "xmm": "XMM log",
  "coordinates": "all fields related with coordinates",
  "hgam": "Catalogue of equivalent width of Hgamma line from Petrie et al. (1973PDAO...14..151P)",
  "ra_prec": "right ascension precision code (0:1/10deg, ..., 8: 1/1000 arcsec)",
  "bibcodelist(y1-y2)": "number of references. The parameter is optional and limit the count to the references between the years y1 and y2",
  "pmra_prec": "precision code (0:1/10deg, ..., 8: 1/1000 arcsec)",
  "cel": "Celescope catalog of ultra-violet photometry",
  "iue": "International Ultraviolet Explorer",
  "uvby1": "The Str\u00f6mgren uvby photometric system",
  "propermotions": "all fields related with the proper motions",
  "fluxdata(filtername)": "all fields related with a particular filter.",
  "id(opt)": "1 : display the first (main identifier) of the object. Is the same as main_id cat : display the identifier from the given catalog. If it doesn't exist, the field is left empty cat1|cat2|...[|1] : display the identifier from the first catalog, or, if it doesn't exits the one from the second identifier and so on. If none is found, the field is left empty, except if |1 closes the list: then the first identifier is used.",
  "flux_name(filtername)": "name of the filter",
  "gen": "Geneva Photometric System Catalogue",
  "dim_minaxis": "Minor axis",
  "dim": "main fields related to object dimensions: major and minor axis, angle and inclination",
  "jp11": "UBVRIJKLMNH Johnson s photometry",
  "dim_incl": "inclination (unit of 15d: value from 0 to 6)",
  "flux(filtername)": "value of the flux for the given filter",
  "dim_wavelength": "wavelength type in which these dimensions were measured (Radio, IR, Visible, UV, X, Gamma)",
  "sptype": "all fields related with the spectral type",
  "ze": "Redshift data for extragalactic sources (with error on redshift)",
  "einstein": "The Einstein Observatory Soft X-ray Source List",
  "flux_bibcode(filtername)": "bibcode",
  "rvz_bibcode": "Bibliographical reference",
  "td1": "UV fluxes from TD1 satellite,by Thompson et al.",
  "flux_error(filtername)": "error value of the flux measurement",
  "coo_qual": "quality (A:astrometric, .., E:unknown)",
  "pmra": "proper motion in right ascension",
  "measurements": "display all fields from all measurements (291 fields)",
  "parallax": "all fields related to parallaxes",
  "irc": "Infra-red measurements by Neugebauer and Leighton, Caltech, NASA, 1969",
  "rv_value": "Radial velocity value. Eventually translated from a redshift",
  "orv": "oRV stellar radial velocities (will shortly replace the GCRV measurements.",
  "coo_err_mina": "minor axis of the error ellipse",
  "plx": "parallax value",
  "pm_err_angle": "angle of the error ellipse",
  "iras": "InfraRed Astronomical Satellite Measurements extracted from the IRAS Point Source Catalog, 2nd Edition",
  "posa": "Measurements of Position (since June 1998)",
  "rvz_wavelength": "wavelength type of the measure (Radio, IR, Visible, UV, X, Gamma)",
  "dec(opt)": "declination. The options are the same as for coo above.",
  "pm_qual": "quality (A:astrometric, .., E:unknown)",
  "dec_prec": "declination precision code (0:1/10deg, ..., 8: 1/1000 arcsec)",
  "mesplx": "Parallax measurements",
  "dim_majaxis": "Major axis",
  "iso": "Infrared Space Observatory (ISO) log",
  "pm_bibcode": "bibliographical reference",
  "morphtype": "all fields related to the morphological type",
  "cl.g": "Cluster of Galaxies: Abell & Corwin,Astrophys. J. Suppl.,70,1 (1989)",
  "coo_wavelength": "wavelength type of the measure (Radio, IR, Visible, UV, X, Gamma)",
  "ra(opt)": "right ascension. The options are the same as for coo above.",
  "flux_unit(filtername)": "flux unit (mag, jy, ...)",
  "pos": "compilation of measurements of stellar positions (except SAO data)",
  "main_id": "main identifier of an astronomical object. It is the same as id(1)",
  "plx_bibcode": "bibliographical reference",
  "flux_quality(filtername)": "quality (A:best, E:worst) of the flux",
  "pm_err_maja": "major axis of the error ellipse",
  "sp_nature": "spectral type nature ('s'pectroscopic, 'a'bsorbtion, 'e'mmission",
  "hbet1": "The Hbeta photometric system (Crawford and Mander,1966,Astron. J. 7,114)",
  "rvz_type": "stored type of velocity: 'v'=radial velocity, 'z'=redshift",
  "pmdec": "proper motion in declination",
  "mt_bibcode": "Bibliographical reference",
  "pm": "proper motion values in right ascension and declination",
  "mespm": "compilation of measurements of stellar proper motions (except SAO catalogue). These data are presently given at equinox and epoch 1950, in the FK4 system.",
  "otype(opt)": "N : numerical display S : standard name (max 6 chars) 3 : short name (max 3 chars) V : full description",
  "rvz_qual": "Quality code (A: best, .., E: worst)",
  "mt_qual": "morphological type quality (A: best, .., E: worst)",
  "plx_error": "parallax error",
  "sp_bibcode": "Bibliographical reference",
  "gcrv": "General Catalogue of Radial Velocities",
  "mk": "MK classifications in the Morgan-Keenan system and the Michigan Catalogues of Two-Dimensional Spectral Types for the HD stars (Houk N.,1975,and seq.)",
  "mt": "morphological type value",
  "z": "Redshift data for extragalactic sources",
  "sp_qual": "spectral type quality (A: best, .., E: worst)",
  "sao": "SAO catalogue (Star catalog of 258997 stars for the epoch and equinox 1950.0,1966)",
  "coo_err_angle": "angle of the error ellipse",
  "z_value": "Redshift value. Eventually translated from a radial velocity",
  "fe_h": "The Stellar Metallicity Values taken from the compilation by Cayrel de Strobel G.,et all (1997A&AS..124..299C)",
  "rvel": "Radial velocities of galaxies",
  "coo(opt)": "d : decimal display s : sexagesimal display frame : ICRS, FK5, FK4, GAL, SGAL, ECL epoch : epoch (decimal value) for the coordinates display equinox : equinox (decimal value) for the coordinates display",
  "coo_bibcode": "bibliographical reference",
  "rvz_radvel": "stored value. Either a radial velocity, or a redshift, depending on the rvz_type field",
  "pmdec_prec": "precision code (0:1/10deg, ..., 8: 1/1000 arcsec)",
  "ubv": "UBV data in Johnson's UBV system compiled by J.-Cl. Mermilliod from Institut d Astronomie de Lausanne (1973A&AS...71..413M)",
  "uvby": "The Str\u00f6mgren uvby photometric system",
  "plx_prec": "precision code (0:1/10deg, ..., 8: 1/1000 arcsec)",
  "v*": "variable stars parameters extracted mainly from the General Catalog of Variable Stars by Kukarkin et al. USSR Academy of Sciences (3rd edition in 1969,and continuations)",
  "dim_bibcode": "Bibliographical reference",
  "coo_err_maja": "major axis of the error ellipse",
  "dimensions": "all fields related to object dimensions",
  "rvz_error": "Error. In the same unit as rvz_radvel",
  "sp": "spectral type value",
  "hbet": "The Hbeta photometric system (Crawford and Mander,1966,Astron. J. 7,114)",
  "otype": "standard name of the object type",
  "dim_angle": "angle of the object",
  "velocity": "all fields related with radial velocity and redshift"
}