J/AJ/169/211ivo://CDS.VizieR/J/AJ/169/211CDSDing YeLiao S.Wen S.Qi Z.2026-01-14T08:18:45Z2026-01-13T16:04:39ZCDS support team

CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France

cds-question@unistra.frorbitsmultiple-starsastrometryvisible-astronomytrigonometric-parallaxThe combination of visual and spectroscopic orbits in binary systems enables precise distance measurements without additional assumptions, making them ideal for examining the parallax zero-point offset (PZPO) at bright magnitudes (G<13) in Gaia. We compiled 249 orbital parallaxes from 246 binary systems and used Markov chain Monte Carlo simulations to exclude binaries where orbital motion significantly impacts parallaxes. After removing systems with substantial parallax errors, large discrepancies between orbital and Gaia parallaxes, and selecting systems with orbital periods under 100 days, a final sample of 44 binaries was retained.The weighted mean PZPO for this sample is -38.9+/-10.3{mu}as, compared to -58.0+/-10.1{mu}as for the remaining systems, suggesting that orbital motion significantly affects parallax measurements. These formal uncertainties of the PZPO appear to be underestimated by a factor of approximately 2.0. For bright stars with independent trigonometric parallaxes from Very Long Baseline Interferometry and Hubble Space Telescope, the weighted mean PZPOs are -14.8+/-10.6 and -31.9+/-14.1{mu}as, respectively. Stars with G<=8 exhibit a more pronounced parallax bias, with some targets showing unusually large deviations, likely due to systematic calibration errors in Gaia for bright stars. The orbital parallaxes dataset compiled in this work serves as a vital resource for validating parallaxes in future Gaia data releases.2025AJ....169..211Dhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/169/211CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toB/wds : The Washington Visual Double Star Catalog (Mason+ 2001-2020)I/239 : The Hipparcos and Tycho Catalogues (ESA 1997)I/355 : Gaia DR3 Part 1. Main source (Gaia Collaboration, 2022)I/357 : Gaia DR3 Part 3. Non-single stars (Gaia Collaboration, 2022)III/135A : Henry Draper Cat. and Extension (Cannon+ 1918-1924; ADC 1989)J/A+A/558/A53 : Milky Way global surv. of star clust. II. (Kharchenko+, 2013)J/A+A/564/A79 : Proper motions of open clusters from UCAC4 (Dias+, 2014)J/AJ/148/48 : CHARA obs. of omega And, HD 178911, xi Cep (Farrington+, 2014)J/AJ/147/123 : Speckle interferometry with SOAR in 2012-2013 (Tokovinin+, 2014)J/AJ/152/138 : Orbits based on speckle interferometry at SOAR (Tokovinin, 2016)J/AJ/160/58 : Orbits of spectro. binar. with CHARA Array. III. (Lester+, 2020)J/MNRAS/492/2709 : Double-lined spectroscopic binaries cat. (Piccotti+, 2020)J/A+A/649/A6 : Gaia Catalogue of Nearby Stars - GCNS (Gaia collaboration, 2021)J/A+A/654/A20 : Plx zero-point offset from Gaia EDR3 data (Groenewegen, 2021)J/A+A/672/A119 : 10 double-lined spectroscopic binaries data (Gallenne+, 2023)J/A+A/669/A4 : Orbital parallax of binary systems (Groenewegen, 2023)J/A+A/674/A10 : Gaia DR3 systems with companions (Holl+, 2023)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/169/211https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/169/211http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/169/211https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/169/211https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/169/211http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/169/211GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/AJ/169/211/table1 (Complete binary sample)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/169/211/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/169/211/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/169/211/table1?GETtext/xml+votable180.050000true0.543119727.08183310.0055555555555555566/90 338 350-351 404 845 1045 1064 1114 1159 1344 1427 1447 1460 1739 1779 2075 2133 2232 2296 2317 2323 2340 2381 2411 2476 2593 2775 2823 2884 2923 3176 3468 3741 4143 4181 4316 4548 4708 4895 5362 5802 6241 6340 6353 6726 7487 7705 8255 8348 8935 9048 9072 9442 9503 9540 9570 9607 9849 10467 11109 11163 11636 11851 11919 12128 12295 12311 12330 12390 12408 12421 12454 12784 12865 13136 13308 13311 13440 13559 13671 13961 14084 14173 14232 14436 14440-14441 14498 14515 14525 14573 14630 14640-14641 14693 14746 14786 14788 14797 14855 15132 15195 15243 15320 15371 15562 15760 15906 16105 16213 16268 16302 16678 16689 17137 17201 17513 17611 17721 17875 17965 18422 18450 18508 18613 18636 18666 18673 18889 19092 19417 19682 19766 19921 20202 20268 20278 21255 21261 21439 21568 21647 21660 21785 22148 22479 22762 22854 23332 23403 23490 23515 23523 23537-23539 23575 23632 23658 23706 23738 23963 23978 24192 24201 24625 25037 25113 25360 25846 25863 26254 26462 27730 27822 27890 27972 28049 28252 28645 28890 29463 29784 30014 30220 30234 30264 30327 30833 30995 31073 31390 31501 31662 31748 31751 31760 31781 31929 32208 32516 32549 32597 32791 32812 32860 32999 33237 33787 34607 35055 35862 36072 36139 36390 36621 36742 36971 39344 39591 40823 40826 41167 42213 42394 42416 42464 42970 42977 42992 43075 43463 43989 44284 44366 44785 44891 45062 47535 48104 48768 48985 49015https://cdsarc.cds.unistra.fr/viz-bin/moc/J/AJ/169/211?format=asciiOpticaldefaultJ/AJ/169/211/table1Complete binary samplerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintWDSWDS (B/wds) numbermeta.idcharHD[3196/286820]? HD (III/135A) numbermeta.idintnullableHIP[171/118077]? Hipparcos (I/239) IDmeta.idintnullableGaiaDR3Gaia DR3 (I/355) source IDmeta.id;meta.mainPer[1.1/167939] Orbital perioddtime.period;src.orbitaldoublee_Per[8e-8/35064]? Uncertainty in Perdstat.error;time.period;src.orbitaldoublenullableT[-2341858/2452600]? Time of passage through periastron; Modified Julian Datedtime.epoch;src.orbital.periastrondoublenullableSimbadSimbad column added by the CDSmeta.ref.urlchare_T[2e-4/1315]? Uncertainty in Tdstat.error;time.epoch;src.orbital.periastrondoublenullablea[0.4/6732] Semi-major axismasphys.angSize.smajAxis;src.orbitaldoublee_a[1e-3/50]? Uncertainty in amasstat.error;phys.angSize.smajAxis;src.orbitalfloatnullablee[0/0.98]? Eccentricitysrc.orbital.eccentricitydoublenullablee_e[0/0.12]? Uncertainty in estat.error;src.orbital.eccentricitydoublenullablei[7.1/163]? Inclinationdegsrc.orbital.inclinationdoublenullablee_i[4e-3/33]? Uncertainty in idegstat.error;src.orbital.inclinationdoublenullableomega[-90.8/361.3]? Argument of periastrondegsrc.orbital.periastrondoublenullablee_omega[0.01/128]? Uncertainty in omegadegstat.error;src.orbital.periastrondoublenullableOmega[-35.6/359.61]? Longitude of ascending nodedegsrc.orbital.nodedoublenullablee_Omega[0.01/28]? Uncertainty in Omegadegstat.error;src.orbital.nodedoublenullableK1[1.46/544]? Semi-amplitude of component 1km/sphys.veloc;src.orbitaldoublenullablee_K1[1e-3/200]? Uncertainty in K1km/sstat.error;phys.veloc;src.orbitaldoublenullableK2[-75.3/117.5]? Semi-amplitude of component 2km/sphys.veloc;src.orbitaldoublenullablee_K2[7e-3/48]? Uncertainty in K2km/sstat.error;phys.veloc;src.orbitaldoublenullableoplx[0.4/294] Orbital parallaxmaspos.parallax.trigdoublee_oplx[6e-3/29.6] Uncertainty in oplxmasstat.error;pos.parallax.trigdoubleoplxG23[0.5/250.7]? Orbital parallax from Groenewegen+2023 (J/A+A/669/A4)maspos.parallax.trigdoublenullablee_oplxG23[8e-3/29.6]? Uncertainty in oplxG23masstat.error;pos.parallax.trigdoublenullableplxGaia[0.4/195.6]? Gaia DR3 (I/355) parallaxmaspos.parallax.trigdoublenullablee_plxGaia[0.01/1.1]? Uncertainty in plxGaiamasstat.error;pos.parallax.trigdoublenullablefG23Indicates whether binary is included in Groenewegen+2023 (J/A+A/669/A4) (1)meta.codechargoodClassification of solution (2)meta.codecharRefReferencesmeta.refcharBibCodeBibCodes for referencesmeta.bib.bibcodechar_RAPosition from Simbad (right ascension part)degpos.eq.ra;meta.main_DEPosition from Simbad (declination part)degpos.eq.dec;meta.main