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Context. The study of planet-crossing asteroids is of both practical and fundamental importance. As they are closer than asteroids in the Main Belt, we have access to a smaller size range, and this population frequently impacts planetary…

Earth and Planetary Astrophysics · Physics 2023-12-06 A. V. Sergeyev , B. Carry , M. Marsset , P. Pravec , D. Perna , F. E. DeMeo , V. Petropoulou , M. Lazzarin , F. La Forgia , I. Di Petro , the NEOROCKS team

The nature and physical properties of asteroids, in particular those orbiting in the near-Earth space, are of scientific interest and practical importance. Exoplanet surveys can be excellent resources to detect asteroids, both already known…

Earth and Planetary Astrophysics · Physics 2020-01-08 M. Cortés-Contreras , F. M. Jiménez-Esteban , M. Mahlke , E. Solano , J. Ďurech , S. Barceló Forteza , C. Rodrigo , A. Velasco , B. Carry

We analyzed 82,548 carefully curated observations of 4420 asteroids with Wide-field Infrared Survey Explorer (WISE) four-band data to produce estimates of diameters and infrared emissivities. We also used these diameter values in…

Earth and Planetary Astrophysics · Physics 2021-11-17 Nathan Myhrvold , Pavlo Pinchuk , Jean-Luc Margot

We positionally correlate asteroids from existing catalogs with a sample of $\about$18,000 asteroids detected by the Sloan Digital Sky Survey (SDSS, Ivezi\'{c} {\em et al.} 2001). We find 2641 unique matches, which represent the largest…

Astrophysics · Physics 2008-11-26 M. Juric , Z. Ivezic , H. R. Lupton , T. Quinn , S. Tabachnik

Halometry---mapping out the spectrum, location, and kinematics of nonluminous structures inside the Galactic halo---can be realized via variable weak gravitational lensing of the apparent motions of stars and other luminous background…

Cosmology and Nongalactic Astrophysics · Physics 2018-08-08 Ken Van Tilburg , Anna-Maria Taki , Neal Weiner

We have detected stellar halo streams in the solar neighborhood using data from the 7th public data release of the Sloan Digital Sky Survey (SDSS), which includes the directed stellar program SEGUE: Sloan Extension For Galactic…

Asteroid phase curves are used to derive fundamental physical properties through the determination of the absolute magnitude H. The upcoming visible Legacy Survey of Space and Time (LSST) and mid-infrared Near-Earth Object Surveillance…

Earth and Planetary Astrophysics · Physics 2020-09-30 M. Mahlke , B. Carry , L. Denneau

We developed a new selection method of halo stars in the phase-space distribution defined by the three integrals of motion in an axisymmetric Galactic potential, ($E$, $L_z$, $I_3$), where $I_3$ is the third integral of motion. The method…

Astrophysics of Galaxies · Physics 2021-03-03 Daniela Carollo , Masashi Chiba

Context. The populations of small bodies of the Solar System (asteroids, comets, Kuiper-Belt objects) are used to constrain the origin and evolution of the Solar System. Both their orbital distribution and composition distribution are…

Earth and Planetary Astrophysics · Physics 2021-08-13 A. V. Sergeyev , B. Carry

The Sloan Digital Sky Survey (SDSS) and Wide-field Infrared Survey Explorer (WISE) provide information about the surface composition of about 100,000 minor planets. The resulting visible colors and albedos enabled us to group them in…

Earth and Planetary Astrophysics · Physics 2016-06-29 M. Popescu , J. Licandro , D. Morate , J. de Leon , D. A. Nedelcu , R. Rebolo , R. G. McMahon , E. Gonzalez-Solares , M. Irwin

We present thermal 24 $\mu$m observations from the \textit{Spitzer Space Telescope} of 62 Hilda asteroid group members with diameters ranging from 3 to 12 kilometers. Measurements of the thermal emission when combined with reported absolute…

Earth and Planetary Astrophysics · Physics 2015-05-27 Erin Lee Ryan , Charles E. Woodward

A statistical analysis of brightness variability of asteroids reveals how their shapes evolve from elongated to rough spheroidal forms, presumably driven by impact-related phenomena. Based on the Sloan Digital Sky Survey Moving Object…

Astrophysics · Physics 2009-11-13 Gyula M. Szabo , Laszlo L. Kiss

Asteroid spectroscopy reflects surface mineralogy. There are few thousand asteroids whose surfaces have been observed spectrally. Determining the surface properties of those objects is important for many practical and scientific…

Earth and Planetary Astrophysics · Physics 2014-11-26 D. A. Oszkiewicz , T. Kwiatkowski , T. Tomov , M. Birlan , S. Geier , A. Penttilä , M. Polińska

We aim to provide a taxonomic classification for asteroids observed by VISTA-VHS survey. We derive a method for assigning a compositional type to an object based on its (Y-J), (J-Ks), and (H-Ks) colors. We present a taxonomic classification…

Earth and Planetary Astrophysics · Physics 2018-09-12 M. Popescu , J. Licandro , J. M. Carvano , R. Stoicescu , J. de Leon , D. Morate , I. L. Boaca , C. P. Cristescu

Galaxy groups provide the means for a great diversity of studies that contribute to a better understanding of the structure of the universe on a large scale and allow the properties of galaxies to be linked to those of the host halos.…

Cosmology and Nongalactic Astrophysics · Physics 2020-04-22 Facundo Rodriguez , Manuel Merchán

Thermal infrared observations are the most effective way to measure asteroid diameter and albedo for a large number of near-Earth objects. Major surveys like NEOWISE, NEOSurvey, ExploreNEOs, and NEOLegacy find a small fraction of high…

Collisions are one of the key processes shaping planetary systems. Asteroid families are outcomes of such collisions still identifiable across our solar system. The families provide a unique view of catastrophic disruption phenomena and…

Earth and Planetary Astrophysics · Physics 2022-07-25 Bojan Novakovic , David Vokrouhlicky , Federica Spoto , David Nesvorny

Context. Mars-crossing asteroids (MCs) are a dynamically unstable group between the main belt and the near-Earth populations. Characterising the physical properties of a large sample of MCs can help to understand the original sources of…

Earth and Planetary Astrophysics · Physics 2017-07-12 Víctor Alí-Lagoa , Marco Delbo'

Samples of reliably identified halo wide binaries are scarce. If reasonably free from selection effects and with a small degree of contamination by chance alignments, these wide binaries become a powerful dynamical tool, having provided one…

Solar and Stellar Astrophysics · Physics 2018-08-20 Johanna Coronado , María Paz Sepúlveda , Andrew Gould , Julio Chanamé

We report on the serendipitous observations of Solar System objects imaged during the High cadence Transient Survey (HiTS) 2014 observation campaign. Data from this high cadence, wide field survey was originally analyzed for finding…