J/A+A/580/A28ivo://CDS.VizieR/J/A+A/580/A28doi:10.26093/cds/vizier.35800028CDSPasewaldt A.Oberst J.Willner K.Beisembin B.Hoffmann H.Matz K.D.,Roatsch T.Michael G.Cardesin-Moinelo A.Zubarev A.E.2017-11-29T11:48:19Z2015-07-23T08:59:58ZCDS support team

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

cds-question@unistra.frsolar-system-planetsastrometryMars Express (MEX) carried out 74 Phobos flybys at distances between 669 and 5579km from April 2008 to August 2011. Images taken with the Super Resolution Channel (SRC) were used to determine the Martian moon's spacecraft-centered right ascension and declination. Image positions of Phobos were measured using the control point and limb fit measurement techniques. Camera pointing and pointing drift were controlled by means of background star observations that were compared to the corresponding positions from the Tycho-2 catalog. Blurred and noisy images were restored by applying an image-based point spread function in a Richardson-Lucy deconvolution. Altogether, we provide 158 astrometric observations of Phobos with estimated uncertainties between 0.224 and 3.405km circular about the direction to the satellite. Control point measurements yield more accurate results than limb fit observations.2015A&A...580A..28Phttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/580/A28CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/A+A/487/755 : CCD observations of Martian Satellites (Veiga+, 2008)J/A+A/488/361 : Phobos Mars Express astrometric observations (Willner+, 2008)J/A+A/572/A104 : Astrometric obs. of Phobos and Deimos in 1971 (Robert+, 2014)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/580/A28https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/580/A28http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/580/A28https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/580/A28https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/580/A28http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/580/A28GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/580/A28/tablea1 (Astrometric observations of Phobos reduced with ESOC navigation orbits and ESOC predicted attitude)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/580/A28/tablea1?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/580/A28/tablea1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/580/A28/tablea1?GETtext/xml+votable180.050000true145.087835.39690.005555555555555556Cone search capability for table J/A+A/580/A28/tablea2 (Astrometric observations of Phobos reduced with ROB accurate orbits and ESAC measured attitude)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/580/A28/tablea2?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/580/A28/tablea2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/580/A28/tablea2?GETtext/xml+votable180.050000true145.089735.39840.0055555555555555566/1034 1043 1046 2246-2247 4140 4142 5098 5668 9420 10050 10233 10236 11349 11351 11473 11476 11520 11676 12341 12805 14453 14455 14790-14791 15081 15084 19113 21753 21756 22158 22340 22342 22523 22526 22576 23672 23674 26409 26438 29210-29211 29426 29432 30031 31677 31714 31943 31954 32033 32074 32096 32149 32601 32604 32994-32995 33255 33266 33390 33476 34661 34663 34911 34933 35082 36089-36091 37035 37268-37269 38932 40443 40709 40720 41161-41162 41556 41558 45397 45436-45437 45845 45888 48968https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/580/A28?format=asciidefaultJ/A+A/580/A28/tablea1Astrometric observations of Phobos reduced with ESOC navigation orbits and ESOC predicted attitudeDSimbad column added by the CDSmeta.notecharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintAllDisplay predicted and measured attitudes when differingmeta.ref.urlcharImgImage nameobs.imagecharNmNumber of methods used to derive the astrometry (1 or 2)meta.numberintnullableDateImage date (UTC)time.epoch;obs.imagenullableTimeImage mid-time (UTC)time.epochnullableMethMeasurement method (1)meta.notecharRAJ2000Right ascension in the spacecraft-centered ICRFdegpos.eq.ra;meta.mainDEJ2000Declination in the spacecraft-centered ICRFdegpos.eq.dec;meta.mainePos[0.002/0.04] 1-{sigma} uncertainty in right ascension and declinationdegstat.errordoubleNp[3/50] Number of measured control points/ percentage of measured limb pointsmeta.numberintXpos[-6987/8684] X coordinate of Mars Express spacecraft in the Mars-centered ICRFkmpos.cartesian.xdoubleYpos[-12538/13427] Y coordinate of Mars Express spacecraft in the Mars-centered ICRFkmpos.cartesian.ydoubleZpos[-9140/9796] Z coordinate of Mars Express spacecraft in the Mars-centered ICRFkmpos.cartesian.zdoubleJ/A+A/580/A28/tablea2Astrometric observations of Phobos reduced with ROB accurate orbits and ESAC measured attitudeDSimbad column added by the CDSmeta.notecharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintAllDisplay predicted and measured attitudes when differingmeta.ref.urlcharImgImage nameobs.imagecharNmNumber of methods used to derive the astrometry (1 or 2)meta.numberintnullableDateImage date (UTC)time.epoch;obs.imagenullableTimeImage mid-time (UTC)time.epochnullableMethMeasurement method (1)meta.notecharRAJ2000Right ascension in the spacecraft-centered ICRFdegpos.eq.ra;meta.mainDEJ2000Declination in the spacecraft-centered ICRFdegpos.eq.dec;meta.mainePos[0.002/0.04] 1-{sigma} uncertainty in right ascension and declinationdegstat.errordoubleNp[3/50] Number of measured control points/ percentage of measured limb pointsmeta.numberintXpos[-6987/8684] X coordinate of Mars Express spacecraft in the Mars-centered ICRFkmpos.cartesian.xdoubleYpos[-12538/13427] Y coordinate of Mars Express spacecraft in the Mars-centered ICRFkmpos.cartesian.ydoubleZpos[-9140/9796] Z coordinate of Mars Express spacecraft in the Mars-centered ICRFkmpos.cartesian.zdouble