J/A+A/509/A27ivo://CDS.VizieR/J/A+A/509/A27doi:10.26093/cds/vizier.35090027CDSNedelcu D.A.Birlan M.Souchay J.Assafin M.Andrei A.H.Badescu O.,Popescu P.Paraschiv P.2018-02-12T08:45:34Z2010-03-28T08:09:18ZCDS support team

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

cds-question@unistra.frasteroidsastrometrysolar-systemWe investigated the link between the International Celestial Reference Frame (ICRF) and the dynamical reference frame realized by the ephemerides of the Solar System bodies. We propose a procedure that implies a selection of events for asteroids with accurately determined orbits crossing the CCD field containing selected quasars. Using a Bulirsch-Stoer numerical integrator, we constructed 8-years (2010-2018) ephemerides for a set of 836 numbered near-Earth asteroids (NEAs). We searched for close encounters (within a typical field of view of groundbased telescopes) between our selected set of asteroids and quasars with high-accuracy astrometric positions extracted from the Large Quasars Astrometric Catalog (LQAC). In the designated period (2010-2018), we found a number of 2924, 14257, and 6972 close approaches (within 10') between asteroids with a minimum solar elongation value of 60 degrees and quasars from the ICRF-Ext2, the Very Large Baseline Array Calibrator Survey (VLBA-CS), and the Very Large Array (VLA), respectively. This large number of close encounters provides the observational basis needed to investigate the link between the dynamical reference frame and the ICRF.2010A&A...509A..27Nhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/509/A27CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/AJ/127/3587 : VLBI-Ext2 (Fey+, 2004)J/ApJS/141/13 : First VLBA calibrator survey: VCS1 catalog (Beasley+, 2002)J/AJ/126/2562 : Second VLBA calibrator survey: VCS2 (Fomalont+, 2003)J/AJ/129/1163 : Third VLBA calibrator survey: VCS3 (Petrov+, 2005)J/AJ/131/1872 : Fourth VLBA calibrator survey: VCS4 (Petrov+, 2006)J/A+A/494/799 : Large Quasar Astrometric Catalogue (LQAC) (Souchay+, 2009)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/509/A27https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/509/A27http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/509/A27https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/509/A27https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/509/A27http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/509/A27GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/509/A27/appulses (Near Earth Asteroids - Quasars appulses between 2010 and 2018)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/509/A27/appulses?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/509/A27/appulses?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/509/A27/appulses?GETtext/xml+votable180.050000true14.453680630.35244780.0055555555555555566/35 48 175 421 438 514 546 967 1576 2214 2605 4179 4194 4486 4708 4746 5470 5546 5848 6153 6174 6501 6507 10337 11009 13067 13153 13820 16813 17106 17159 17366 18155 18458 18504 18506 18718 18766 18772 18981 19088 19308 19997 20144 20195 20476 20984 21266 21758 22057 22224 22359 22501 22659 22711 22917 23127 24349 24790 24861 25083 25354 28269 28315 28318 29017 29074 29714 30566 31176 31252 31547 31559 31792 32266 34571 35274 36343 37385 38189 38277 40637 40891 42696 44069 44149 44600 44724 44729 44799 46810 46851 47534 48320 48422 48533 48715 48797 48918 48952 49002https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/509/A27?format=asciidefaultJ/A+A/509/A27/appulsesNear Earth Asteroids - Quasars appulses between 2010 and 2018recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRef[ABC-] Reference flag (1)meta.notecharUmag? Photometric magnitude in Optical U band (2)magphot.mag;em.opt.UfloatnullableBmag? Photometric magnitude in Optical B band (2)magphot.mag;em.opt.BfloatnullableVmag? Photometric magnitude in Optical V band (2)magphot.mag;em.opt.VfloatnullableRmag? Photometric magnitude in Optical R band (2)magphot.mag;em.opt.RfloatnullableImag? Photometric magnitude in Optical I band (2)magphot.mag;em.opt.IfloatnullableDateDate of the close approach (YYYY/MM/DD.ddddd)time.epochcharAstThe asteroid numbermeta.idintVastThe estimated V magnitude of the asteroidmagphot.mag;em.opt.VfloatDistThe minimum apparent asteroid-quasar distancearcsecpos.angDistance;stat.minfloatSolSolar elongation angledegpos.eq.hafloatN*The number of UCAC2 stars in a 10'x10' field centered at the quasar J2000 positionmeta.numberintEphemDisplay the Ephemeris of this asteroid, from IMCCE (Paris)meta.ref.urlcharLQACDisplay the LQAC data for this quasar, Cat. J/A+A/494/799meta.ref.urlcharRAJ2000Right ascension in decimal degrees (J2000) (2)degpos.eq.ra;meta.mainDEJ2000Declination in decimal degrees (J2000) (2)degpos.eq.dec;meta.main