J/ApJ/741/68ivo://CDS.VizieR/J/ApJ/741/68doi:10.26093/cds/vizier.17410068CDSMasiero J.R.Mainzer A.K.Grav T.Bauer J.M.Cutri R.M.Dailey J.,Eisenhardt P.R.M.McMillan R.S.Spahr T.B.Skrutskie M.F.Tholen D.,Walker R.G.Wright E.L.Debaun E.Elsbury D.Gautier Iv T.,Gomillion S.Wilkins A.2022-02-01T07:05:56Z2013-06-05T11:42:01ZCDS support team

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

cds-question@unistra.frasteroidsinfrared-sourcessurveysWe present initial results from the Wide-field Infrared Survey Explorer (WISE), a four-band all-sky thermal infrared survey that produces data well suited for measuring the physical properties of asteroids, and the NEOWISE enhancement to the WISE mission allowing for detailed study of solar system objects. Using a NEATM thermal model fitting routine, we compute diameters for over 100000 Main Belt asteroids (MBAs) from their IR thermal flux, with errors better than 10%. We then incorporate literature values of visible measurements (in the form of the H absolute magnitude) to determine albedos. Using these data we investigate the albedo and diameter distributions of the Main Belt. As observed previously, we find a change in the average albedo when comparing the inner, middle, and outer portions of the Main Belt. We also confirm that the albedo distribution of each region is strongly bimodal. We observe groupings of objects with similar albedos in regions of the Main Belt associated with dynamical breakup families. Asteroid families typically show a characteristic albedo for all members, but there are notable exceptions to this.2011ApJ...741...68Mhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/741/68CatalogResearchIsServedByTAP VizieR generic servicerelated-toB/astorb : Orbits of Minor Planets (Bowell+ 2013)II/190 : IRAS Minor Planet Survey (IMPS) (Tedesco 1992)VII/91 : IRAS Asteroid and Comet Survey (Veeder+ 1986)J/A+A/542/A11 : Main-belt asteroids polarimetry. III (Canada-Assandri+, 2012)J/A+A/545/A131 : Photometry of 8 main belt asteroids (Marciniak+, 2012)J/A+A/529/A86 : Polarimetric survey of main-belt asteroids (Gil-Hutton+, 2011)J/A+A/529/A107 : Photometry of 4 main belt asteroids (Marciniak+, 2011)J/A+A/498/313 : Photometry of 3 main belt asteroids (Marciniak+, 2009)J/A+A/423/381 : Asteroidal I, J, K in the DENIS Survey (Baudrand+, 2004)J/AJ/123/2070 : ISO deep asteroid search (Tedesco+, 2002)J/A+A/375/275 : Asteroidal I, J, K in the DENIS Survey (Baudrand+ 2001)http://www.minorplanetcenter.net/ : Minor Planet Center home pagehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/741/68https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/741/68http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/741/68https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/741/68https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/741/68http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/741/68GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapInfrareddefaultJ/ApJ/741/68/table1*Thermal model fits for Main Belt Asteroids (MBA)Namemeta.id;meta.maincharHMag[4.06/19.8]? Absolute H band magnitudemagphys.magAbsfloatnullableDiam[0.4/544] Asteroid diameterkmphys.size.diameterfloate_DiamStatistical error in Diam (1)kmstat.errorfloatMPCAsteroid name, in MPC packed formatmeta.idcharG? Magnitude slope parameterarith.grad;stat.paramfloatnullablepV[0/1]? Visible geometrical albedophys.albedofloatnullablee_pV? Statistical error in pV (1)stat.errorfloatnullableetaBeaming parameter {eta} (3)stat.fit.paramfloate_eta? Statistical error in eta (2)stat.error;phys.electron.degenfloatnullablepIR[0/1]? Infra-red geometrical albedophys.albedofloatnullablee_pIR? Statistical error in pIR (1)stat.errorfloatnullableN1Number of WISE W1 (3.3um) observationsmeta.numberintN2Number of WISE W2 (4.6um) observationsmeta.numberintN3Number of WISE W3 (11.6um) observationsmeta.numberintN4Number of WISE W4 (22.1um) observationsmeta.numberintrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordint