hsoy.mainivo://org.gavo.dc/hsoy/q/maindoi:10.21938/HP1ASPBYWElyXb6qdqyolgThe GAVO DC teamDemleitner, M.Röser, S.Altmann, M.Bastian, U.Schilbach, E.2017-02-01T00:00:00Z2017-01-31GAVO Data Centre Team

Mönchhofstrasse 12-14, D-69120 Heidelberg

gavo@ari.uni-heidelberg.de+49 6221 54 1837starssurveysastrometryproper-motions HSOY is a catalog of 583'001'653 objects with precise astrometry based on PPMXL and Gaia DR1. Typical formal errors at mean epoch in proper motion are below 1 mas/yr for objects brighter than 10 mag, and about 5 mas/yr at the faint end (about 20 mag). South of -30 degrees, astrometry is significantly worse. HSOY also contains, where available, USNO-B, Gaia, and 2MASS photometry. HSOY's positions and proper motions are given for epoch J2000. The catalog becomes severely incomplete faintwards of 16 mag in the G-band. The mean epochs are typically very close to Gaia's J2015. HSOY still contains about 0.7% spurious close "binaries" (non-matched stars) from the original USNO-B (marked with non-NULL clone). Also, failed matches within Gaia DR1 contribute another 1.5% spurious pairs (marked with non-NULL comp). In both cases, astrometry presumably is sub-standard. More information is available at http://dc.g-vo.org/hsoy.2017A&A...600L...4Ahttps://dc.g-vo.org/tableinfo/hsoy.mainResearchGaia0/0-1151544 515448.277e-20 5.369e-19Opticalhsoy HSOY is a catalog of 583'001'653 objects with precise astrometry based on PPMXL and Gaia DR1. Typical formal errors at mean epoch in proper motion are below 1 mas/yr for objects brighter than 10 mag, and about 5 mas/yr at the faint end (about 20 mag). South of -30 degrees, astrometry is significantly worse. HSOY also contains, where available, USNO-B, Gaia, and 2MASS photometry. HSOY's positions and proper motions are given for epoch J2000. The catalog becomes severely incomplete faintwards of 16 mag in the G-band. The mean epochs are typically very close to Gaia's J2015. HSOY still contains about 0.7% spurious close "binaries" (non-matched stars) from the original USNO-B (marked with non-NULL clone). Also, failed matches within Gaia DR1 contribute another 1.5% spurious pairs (marked with non-NULL comp). In both cases, astrometry presumably is sub-standard. More information is available at http://dc.g-vo.org/hsoy.hsoy.main HSOY is a catalog of 583'001'653 objects with precise astrometry based on PPMXL and Gaia DR1. Typical formal errors at mean epoch in proper motion are below 1 mas/yr for objects brighter than 10 mag, and about 5 mas/yr at the faint end (about 20 mag). South of -30 degrees, astrometry is significantly worse. HSOY also contains, where available, USNO-B, Gaia, and 2MASS photometry. HSOY's positions and proper motions are given for epoch J2000. The catalog becomes severely incomplete faintwards of 16 mag in the G-band. The mean epochs are typically very close to Gaia's J2015. HSOY still contains about 0.7% spurious close "binaries" (non-matched stars) from the original USNO-B (marked with non-NULL clone). Also, failed matches within Gaia DR1 contribute another 1.5% spurious pairs (marked with non-NULL comp). In both cases, astrometry presumably is sub-standard. More information is available at http://dc.g-vo.org/hsoy.590000000ipixThe PPMXL object identifier, which in turn is the q3c ipix of the original USNO-B object; for HSOY, only (ipix, comp) is a unique identifier (primary key). The recommended identifier form is 'HSOY ipix.comp', where comp=0 for NULL comps. This is what the SCS generates.meta.id.cross68187852794531.4555397969262336e+174.897678929650011e+186.544739885363848e+1869175110039938228571.0longindexedcompIf non-null this indicates that multiple Gaia objects matched the PPMXL object; this may indicate bona fide multiple stars, but more likely is due to failed matching of Gaia observations at different epochs. In both cases, proper motions must be used with care. The index is artificial, i.e., no primary, secondary, etc, is implied. ipix+comp together are a primary key to hsoy.main.meta.code.multip11.02.02.040.008333711shortnullableraj2000Right Ascension J2000.0, epoch 2000.0degpos.eq.ra;meta.main6e-0620.8815237.901340.5833601doubleindexednullabledej2000Declination J2000.0, epoch 2000.0degpos.eq.dec;meta.main-89.886-70.7159-17.90564.550289.93921doubleindexednullablee_raepraMean error in RA*cos(delta) at mean epochdegstat.error;pos.eq.ra;meta.main2.78e-071.75e-053.11e-054.53e-055.75e-051floatnullablee_deepdeMean error in Dec at mean epochdegstat.error;pos.eq.dec;meta.main2.78e-071.75e-053.14e-054.53e-055.69e-051floatnullablepmraProper Motion in RA*cos(delta)deg/yrpos.pm;pos.eq.ra-0.0026833-3.6267e-05-4.6389e-073.1322e-050.00271881floatnullablepmdeProper Motion in Decdeg/yrpos.pm;pos.eq.dec-0.002712-4.03e-05-7.8056e-073.6792e-050.0027711floatnullablee_pmraMean error in pmRA*cos(delta)deg/yrstat.error;pos.pm;pos.eq.ra5.56e-081.06e-062.11e-066.86e-062.48e-051floatnullablee_pmdeMean error in pmDEdeg/yrstat.error;pos.pm;pos.eq.dec2.78e-081.06e-062.11e-066.86e-062.48e-051floatnullableepraMean Epoch (RA)yrtime.epoch;pos.eq.ra1924.171968.311984.651995.592005.131floatnullableepdeMean Epoch (Dec)yrtime.epoch;pos.eq.dec1922.621968.31984.651995.62005.131floatnullablejmagJ selected default magnitude from 2MASSmagphot.mag;em.IR.J-1.31411.71715.52116.79621.7490.453138floatindexednullablee_jmagJ total magnitude uncertaintymagstat.error;phot.mag;em.IR.J0.0150.0230.0660.1639.9990.446147floatnullablehmagH selected default magnitude from 2MASSmagphot.mag;em.IR.H-2.23511.0314.96116.28220.1470.453138floatnullablee_hmagH total magnitude uncertaintymagstat.error;phot.mag;em.IR.H00.0220.0780.2139.9980.419335floatnullablekmagK_s selected default magnitude from 2MASSmagphot.mag;em.IR.K-2.66310.78614.75516.23219.8720.453138floatindexednullablee_kmagK_s total magnitude uncertaintymagstat.error;phot.mag;em.IR.K00.0210.0890.2459.9990.353952floatnullableb1magB mag from USNO-B, first epochmagphot.mag;em.opt.B-0.6214.7419.4321.0464.880.400937floatnullableb2magB mag from USNO-B, second epochmagphot.mag;em.opt.B-0.4415.2219.2121.665.380.853922floatnullabler1magR mag from USNO-B, first epochmagphot.mag;em.opt.R-1.2213.817.9220.0465.430.793746floatnullabler2magR mag from USNO-B, second epochmagphot.mag;em.opt.R0.1714.2118.2420.965.450.806482floatnullableimagI mag from USNO-Bmagphot.mag;em.opt.I-0.6413.1617.2518.9865.120.73584floatnullablemagsurveysSurveys the USNO-B magnitudes are taken frommeta.codecharnullablenobsNumber of observations contributing to this column (always nobs(ppmxl)+1)meta.number;obs33.06.07.0170.99978745shortnullablegaia_idUnique source identifiermeta.id343598963202.8057349365717197e+174.2738585968976384e+186.723103967053457e+1869175289932832044801.0longindexednullablephot_g_mean_magMean magnitude in the G band from Gaia DR1. Magnitudes for which err_flux/flux>0.1 have been dropped.magphot.mag;em.opt;stat.mean3.3265114.0318.112820.115325.81630.999862floatindexednullablee_phot_g_mean_magEstimated error in Gaia G-band magnitude. This is estimated as 1.09*err_flux/flux which is good as a symmetric 1 σ-error of the magnitude to at least within a few percent when err_flux/flux is smaller than 0.1, as it is for the HSOY objects.s**-1stat.error;phot.mag;em.opt.V5.05882e-050.0005965640.004422870.02065550.1090.999862floatnullablecloneIf 1, more than one PPMXL object matched to this Gaia object (i.e.: proper motion is probably wrong, any apparent duplicity is probably spurious). This is normally due to failed matching of objects from different plates in USNO-B.meta.code.qual11.01.01.010.049893033shortnullableno_sc1 if this object had no match within 3 arcseconds in SuperCosmos at J2000. It is very likely that it is not a real object. NOTE: False is encoded as NULL in the database; to exclude objects without a supercosmos match, write no_sc IS NULL.meta.code.qual0.0shortnullable