J/A+A/509/A94ivo://CDS.VizieR/J/A+A/509/A94doi:10.26093/cds/vizier.35090094CDSKwiatkowski T.Buckley D.A.H.O'Donoghue D.Crause L.Crawford S.,Hashimoto Y.Kniazev A.Loaring N.Romero Colmenero E.Sefako R.,Still M.Vaisanen P.2018-02-01T11:50:43Z2010-03-29T10:38:42ZCDS support team

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

cds-question@unistra.frsolar-systemasteroidsccd-photometrysurveysWe report first results from our extensive survey of the very small (H>21.5mag) near-Earth asteroids. Our aim was to obtain photometric lightcurves for these faint, fast moving objects and to measure their rotation periods and amplitudes of light variations. These parameters can be used to make statistical analysis of the still little known population of the smallest asteroids, test present theories of the YORP effect as well as to study their spin limits, which are connected with their internal structure. Due to the faintness of the targets and the expected short periods of rotation, observations were performed with the large, 10-m SALT telescope in SAAO (South Africa). For most asteroids, V filter images with exposure times of 5-60 seconds were obtained with the instrument's SALTICAM's CCD camera. Even though the non-sidereal tracking was not available, the SALTICAM's relatively large field-of-view of 8'x8' helped to perform the relative photometry of the fast-moving targets. The presented asteroids have synodic periods ranging from 77s to 44min, effective diameters from 21 to 94m, and significantly elongated shapes.2010A&A...509A..94Khttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/509/A94CatalogResearchIsServedByTAP VizieR generic servicerelated-toJ/A+A/465/331 : Asteroid brightness and geometry (Durech+, 2007)J/A+A/498/313 : Photometry of 3 main belt asteroids (Marciniak+, 2009)J/A+A/508/1503 : Photometry of 3 main belt asteroids (Marciniak+, 2009)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/509/A94https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/509/A94http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/509/A94https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/509/A94https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/509/A94http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/509/A94GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapdefaultJ/A+A/509/A94/table1Aspect data and observing logrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintAstDesignation of the asteroidmeta.id;meta.maincharObs1Observation date (1)stime.epoch;obsnullableObs2Observing time (end) (1)time.durationnullablerAsteroid-Sun distance (2)AUpos.distancefloatDeltaAsteroid-Earth distance (2)AUpos.distancefloatalphaSolar phase angle (2)degpos.phaseAngfloatELonGeocentric, ecliptic longitude (2)degpos.ecliptic.lonELatGeocentric, ecliptic latitude (2)degpos.ecliptic.latfloatVmagApparent magnitudemagphot.mag;em.opt.VfloatpmovAsteroid movement on the skyarcsec/minpos.pmfloattexpExposure timestime.duration;obs.exposureintfilt[VC] Kron-Cousins V or "clear" filterinstr.bandpasscharN1Number of exposures takenmeta.numberintN2Number of exposures usedmeta.numberintJ/A+A/509/A94/table2Summary of the resultsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintAstAsteroid designationmeta.id;meta.maincharprimaryPerRotation periodhtime.perioddoublee_PerPeriod uncertainty (sigma)hstat.errordoubleAmpPeak-to-peak lightcurve amplitudemagsrc.var.amplitudefloata/bMaximum elongation (1)phys.size.axisRatiofloatDiamEffective diameterkmphys.size.diameterfloatFileCorresponding figure and file, in "clc" subdirectorymeta.bib.figcharLCComposite light curve of the asteroidmeta.ref.urlcharOrbDetails of the orbit of this asteroid, from the astorb databasemeta.ref.urlcharJ/A+A/509/A94/listList of all light curvesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintAstAsteroid namemeta.id;meta.maincharFileNameName of the file containing the light curvemeta.id;meta.filecharTitleTitle of the filemeta.notecharLCLight curve of the asteroidmeta.ref.urlchar