gdr2mock.astromeivo://org.gavo.dc/gdr2mock/q/astrometric_performance2doi:10.21938/SYx.JVejuu66uzDiLcfRlAThe GAVO DC teamRybizki, J.Demleitner, M.Fouesneau, M.Bailer-Jones, C.Rix, H.-W.Andrae, R.2020-05-04T09:28:20Z2018-07-242018-05-172018-04-25GAVO Data Centre Team

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gavo@ari.uni-heidelberg.de+49 6221 54 1837astrostatistics-techniquesmilky-way-galaxyastronomical-simulationsThis table gives numerical factors to be applied to the sky-averaged astrometric errors for the different astrometric parameters as function of ecliptic latitude β, including the effect of the variation of the number of transits over the sky. Source: https://www.cosmos.esa.int/web/gaia/table-22018PASP..130g4101Rhttps://dc.g-vo.org/tableinfo/gdr2mock.astrometric_performance2SimulationResearchOpticalInfraredgdr2mock This catalogue is a simulation of the Gaia DR2 stellar content using Galaxia (a tool to sample stars from a Besancon-like Milky Way model), 3d dust extinction maps and the latest PARSEC Isochrones. It is mimicking the Gaia DR2 data model and an apparent magnitude limit of g=20,7. Extinctions and photometry in different bands have also been included in a supplementary table as well as uncertainty estimates using a scaled nominal error model.gdr2mock.astrometric_performance2This table gives numerical factors to be applied to the sky-averaged astrometric errors for the different astrometric parameters as function of ecliptic latitude β, including the effect of the variation of the number of transits over the sky. Source: https://www.cosmos.esa.int/web/gaia/table-220lat_indexBin index, starting at 0meta.id;meta.main00.579.518.43191.0shortindexedprimaryn_obsThe sky averaged number of observations at eom for a specific bin in ecliptic latitudemeta.number;obs6161.075.0131.459999999999981441.0intalpha_ratioThe error factor to be multiplied with the nominal parallax error to derive ra error for a specific ecliptic latitude binstat.error;arith.ratio0.6460.65170.80.917720.921floatnullabledelta_ratioThe error factor to be multiplied with the nominal parallax error to derive dec error for a specific ecliptic latitude binstat.error;arith.ratio0.6660.666570.68750.794640.8221floatnullableparallax_ratioThe error factor to be multiplied with the nominal parallax error to derive parallax error for a specific ecliptic latitude binstat.error;arith.ratio0.70.723371.04451.154861.1561floatnullablepmra_ratioThe error factor to be multiplied with the nominal parallax error to derive pmra error for a specific ecliptic latitude binstat.error;arith.ratio0.4510.454420.5720.649290.6511floatnullablepmdec_ratioThe error factor to be multiplied with the nominal parallax error to derive pmdec error for a specific ecliptic latitude binstat.error;arith.ratio0.4780.4780.48850.557040.5731floatnullable