J/other/RAA/19.2ivo://CDS.VizieR/J/other/RAA/19.29doi:10.26093/cds/vizier/dx/bjkcjCDSLiao S.-L.Qi Z.-x.Guo S.-f.Cao Z.-h.2026-02-10T20:07:36Z2019-02-25T12:46:40ZCDS support team

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

cds-question@unistra.frquasarsvisible-astronomysloan-photometryinfrared-photometryredshiftedQuasars are essential for astrometric in the sense that they are spatial stationary because of their large distance from the Sun. The European Space Agency (ESA) space astrometric satellite Gaia is scanning the whole sky with unprecedented accuracy up to a few uas level. However, Gaia's two fields of view observations strategy may introduce a parallax bias in the Gaia catalog. Since it presents no significant parallax, quasar is perfect nature object to detect such bias. More importantly, quasars can be used to construct a Celestial Reference Frame in the optical wavelengths in Gaia mission. In this paper, we compile the most reliable quasars existing in literatures.The final compilation (designated as Known Quasars Catalog for Gaia mission, KQCG) contains 1842076 objects, among of them, 797632 objects are found in Gaia DR1 after cross-identifications. This catalog will be very useful in Gaia mission.2019RAA....19...29Lhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/other/RAA/19.29CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toI/337 : Gaia DR1 (Gaia Collaboration, 2016)II/328 : AllWISE Data Release (Cutri+ 2013)J/A+A/583/A75 : Large Quasar Astrometric Catalog 3 (LQAC-3) (Souchay+, 2015)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/other/RAA/19.29https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/other/RAA/19.29http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/other/RAA/19.29https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/other/RAA/19.29https://vizier.iucaa.in/viz-bin/votable?-source=J/other/RAA/19.29http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/other/RAA/19.29GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/other/RAA/19.29/kqcg (Known QSOs catalog for Gaia mission catalog)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/other/RAA/19.29/kqcg?https://vizier.iucaa.in/viz-bin/conesearch/J/other/RAA/19.29/kqcg?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/other/RAA/19.29/kqcg?GETtext/xml+votable180.050000true304.594582-43.85461730.0055555555555555560/0 2 4-6 8 11 1/4-6 30 38-39 43 2/28-29 31 48-49 51-53 55 58-59 61-63 117 124 126-127 144 146-147 149-151 160 169-171 3/120-121 123 200-201 216-218 226-227 231 241-243 452-453 458-459 462 464-465 467 475 477 500 502-503 580 582 595 644-646 648 655-657 665-668 670 673-675 4/488-490 808-809 812-813 815 876-877 879 900 917-920 922-923 962-963 1793-1794 1797 1821 1825-1826 1830 1853-1855 1864-1865 1893 1897-1899 1904-1905 1907 1912 1919 2006-2007 2324-2326 2332 2334 2373-2375 2377-2379 2588-2589 2596 2600 2602 2615 2618-2619 2633 2640-2641 2644 2658-2659 2678-2679 2685-2687 2691 5/1964 1966-1967 3240-3242 3245 3256-3257 3259 3512-3513 3515 3584-3585 3587-3589 3591-3592 3594-3596 3598-3599 3604 3607 3609-3610 3613-3615 3648-3649 3651-3652 3654-3658 3660-3661 3663 3665-3667 3684 3686-3687 3840 3842-3844 3846-3847 7168-7170 7181-7182 7184-7186 7192 7195 7197 7199-7200 7204-7205 7208-7209 7211 7217 7220 7222-7223 7226 7228 7230-7231 7264 7267 7269 7272-7273 7276-7277 7280-7282 7288 7292-7293 7296-7298 7308 7310-7314 7318-7319 7325-7327 7360-7361 7364-7365 7367 7369-7371 7373-7375 7377-7380 7382-7384 7386-7387 7389-7391 7408 7410-7411 7464-7465 7467-7469 7471 7556 7560 7562 7566-7569 7571 7576 7578-7580 7582-7583 7585-7587 7624 7627 7654 7658 7661-7665 7668-7669 7671-7673 7675 8018-8020 8022-8023 9308 9310-9311 9332 9341-9343 9472 9474 9478 9482 9485-9487 9489-9491 9505-9507 10360-10361 10364-10365 10367 10388-10390 10392 10394-10396 10398 10404-10406 10416-10417 10420-10421 10424-10425 10429-10433 10436 10439-10442 10444-10446 10449-10452 10455 10459 10464 10466-10467 10469-10471 10528-10530 10537 10540 10544-10545 10547-10548 10550-10553 10557-10559 10568-10570 10572-10574 10580 10582-10584 10587-10588 10591 10593-10596 10599 10602-10603 10605 10608 10612 10616-10618 10620-10621 10624 10626 10628 10630 10704 10706-10707 10709-10711 10736-10738 10752-10753 10756 10759-10761 10763 6/7860-7862 12973-12978 12985-12989 12991 13033-13035 14056-14058 14345-14347 14360-14361 14363 14373-14375 14389-14391 14421-14424 14426-14427 14434-14435 14445-14449 14451 14601-14603 14613-14615 14636-14637 14639 14648 14650-14651 14657-14659 14740 14742-14743 15364-15366 15380-15382 28686-28687 28720-28722 28733-28735 28748-28750 28772 28774-28776 28778 28784-28785 28787 28792-28793 28795 28804-28805 28807 28809-28811 28813-28814 28824 28826 28830 28840-28841 28843 28848 28850-28852 28854-28858 28860 28862-28863 28865-28867 28873-28878 28885 28887 28896-28898 28901-28903 28908-28909 28911 28916 28918-28919 29061 29063 29065-29066 29072 29074-29075 29081-29086 29097-29099 29101-29103 29112-29113 29115 29117 29119 29132-29134 29157-29160 29162-29163 29167 29177 29179-29180 29182-29183 29196 29198-29199 29236 29238-29239 29260-29261 29263-29266 29268 29270-29271 29296-29298 29449-29450 29453 29455 29465-29467 29472 29474-29475 29488 29490-29491 29505-29507 29525-29526 29540-29542 29552-29554 29636 29638-29639 29864-29866 29880-29881 29883 30208-30209 30213-30218 30220 30222-30223 30228-30230 30232 30234-30236 30238-30239 30244 30246 30252 30254-30255 30257-30261 30263 30281-30283 30309-30311 30325-30327 30336-30338 30500 30502-30504 30506-30507 30608-30609 30611-30614 30620 30622-30626 30629-30631 30636 30641 30643 30664-30665 30667-30669 30671 30680 30682-30683 30696-30698 32064 32066 32068 32070-32071 32084-32086 37236 37238-37239 37335-37336 37338-37342 37360 37362-37363 37892-37894 37900-37902 37905-37907 37909-37910 37916 37918-37922 37925-37927 37934-37938 37952 37954-37955 38017-38019 41448 41450 41452-41453 41455 41464-41465 41467 41564 41566-41567 41572 41574 41588-41589 41591 41598-41599 41628 41630-41631 41648-41650 41652-41653 41657-41660 41662-41663 41672-41674 41677-41679 41688-41690 41692 41694-41695 41705-41706 41708-41709 41711-41712 41714-41715 41736-41738 41740-41741 41743 41748-41750 41752 41754-41755 41772-41773 41775 41788-41790 41793 41795 41812 41814-41818 41824-41826 41828 41830 41832-41834 41860 41862-41863 41873-41874 42124 42126-42127 42145 42147 42153-42157 42164-42165 42168 42170-42171 42173 42175 42185-42187 42196-42197 42216-42217 42219-42221 42224-42226 42284 42286-42287 42300-42302 42324-42325 42327 42340 42343-42344 42346 42356-42358 42360-42361 42363 42369-42371 42388 42391 42393-42395 42400-42402 42404-42406 42416-42417 42424-42426 42428-42429 42431 42436 42438 42440 42442-42444 42446-42447 42452-42454 42456 42458-42460 42462-42463 42476 42478-42479 42488-42490 42492-42493 42495 42501-42503 42509-42511 42516-42517 42519 42524-42525 42527 42820-42822 42833-42835 42957-42959 43016 43018-43020 43022-43023 43028 43030-43031 43033-43035 43049-43051https://cdsarc.cds.unistra.fr/viz-bin/moc/J/other/RAA/19.29?format=asciiOpticalInfrareddefaultJ/other/RAA/19.29/kqcgKnown QSOs catalog for Gaia mission catalogrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameName (1)meta.id;meta.maincharRAJ2000Right ascension (J2000.0) (2)degpos.eq.ra;meta.mainindexedDEJ2000Declination (J2000.0) (2)degpos.eq.dec;meta.mainindexede_RAJ2000? Error in Right ascensionarcsecstat.error;pos.eq.radoublenullablee_DEJ2000? Error in Declinationarcsecstat.error;pos.eq.decdoublenullablez? Redshift (3)src.redshiftdoublenullableumag? u photographic magnitude (4)magphot.mag;em.opt.Udoublenullablegmag? g photographic magnitude (4)magphot.mag;em.opt.Bdoublenullablermag? r photographic magnitude (4)magphot.mag;em.opt.Rdoublenullableimag? i photographic magnitude (4)magphot.mag;em.opt.Idoublenullablezmag? z photographic magnitude (4)magphot.mag;em.opt.IdoublenullableRefReference catalog (5)meta.id;meta.tablecharW1-W2? W1-W2 photographic magnitude (6)magphot.color;em.IR;em.IRfloatnullableW2-W3? W2-W3 photographic magnitude (6)magphot.color;em.IR;em.IRfloatnullableW1mag? W1 photographic magnitude (6)magphot.mag;em.IR.3-4umfloatnullable