English
Related papers

Related papers: Using neural networks to model Main Belt Asteroid …

200 papers

We present a new extensive analysis of the old problem of finding a satisfactory calibration of the relation between the geometric albedo and some measurable polarization properties of the asteroids. To achieve our goals, we use all…

Earth and Planetary Astrophysics · Physics 2015-06-02 A. Cellino , S. Bagnulo , R. Gil-Hutton , P. Tanga , M. Canada-Assandri , E. F. Tedesco

Surface temperature distribution is crucial for thermal property-based studies about irregular asteroids in our Solar System. While direct numerical simulations could model surface temperatures with high fidelity, they often take a…

Earth and Planetary Astrophysics · Physics 2024-11-06 Shunjing Zhao , Hanlun Lei , Xian Shi

Near-Earth Objects (NEOs) are asteroids, comets and meteoroids in heliocentric orbits with perihelion below 1.3 au. Similarly to the population of the Main Asteroid Belt, NEOs are primordial bodies and their study can improve our…

Earth and Planetary Astrophysics · Physics 2024-07-01 Elena Fantino , Roberto Flores , Giuseppe Donnarumma , David Canales , Kathleen C. Howell

Thanks to the Gaia mission, it will be possible to determine the masses of approximately hundreds of large main belt asteroids with very good precision. We currently have diameter estimates for all of them that can be used to compute their…

The past decade has brought major improvements in large-scale asteroid discovery and characterization with over half a million known asteroids and over 100,000 with some measurement of physical characterization. This explosion of data has…

Earth and Planetary Astrophysics · Physics 2016-08-31 Francesca E. DeMeo , Conel M. O'D. Alexander , Kevin J. Walsh , Clark R. Chapman , Richard P. Binzel

Estimates for asteroid masses are based on their gravitational perturbations on the orbits of other objects such as Mars, spacecraft, or other asteroids and/or their satellites. In the case of asteroid-asteroid perturbations, this leads to…

Earth and Planetary Astrophysics · Physics 2017-07-26 L. Siltala , M. Granvik

The number of asteroids with accurately determined orbits increases fast. The catalogs of asteroid physical observations have also increased, although the number of objects is still smaller than in the orbital catalogs. We developed a new…

Earth and Planetary Astrophysics · Physics 2015-06-18 Andrea Milani , Alberto Cellino , Zoran Knezevic , Bojan Novakovic , Federica Spoto , Paolo Paolicchi

We propose that extrasolar asteroid belts can be detected through their gravitational microlensing signatures. Asteroid belt + star lens systems create so-called "pseudo-caustics", regions in the source plane where the magnification…

Earth and Planetary Astrophysics · Physics 2016-12-21 Ethan Lake , Zheng Zheng , Subo Dong

We present a novel approach based on artificial neural networks, so-called geodesyNets, and present compelling evidence of their ability to serve as accurate geodetic models of highly irregular bodies using minimal prior information on the…

Earth and Planetary Astrophysics · Physics 2021-05-28 Dario Izzo , Pablo Gómez

Low-albedo, hydrated objects dominate the list of the largest asteroids. These objects have varied spectral shapes in the 3-$\mu$m region, where diagnostic absorptions due to volatile species are found. Dawn's visit to Ceres has extended…

Earth and Planetary Astrophysics · Physics 2019-06-19 Andrew S. Rivkin , Ellen S. Howell , Joshua P. Emery

With thermal infrared observations detected by the NEOWISE project, we have measured diameters for 1742 minor planets that were also observed by the Infrared Astronomical Satellite (IRAS). We have compared the diameters and albedo derived…

Earth and Planetary Astrophysics · Physics 2015-05-28 A. Mainzer , T. Grav , J. Masiero , J. Bauer , E. Wright , R. M. Cutri , R. Walker , R. S. McMillan

We used WISE-derived geometric albedos (p_V) and diameters, as well as geometric albedos and diameters from the literature, to produce more accurate diurnal Yarkovsky drift predictions for 540 near-Earth asteroids (NEAs) out of the current…

Earth and Planetary Astrophysics · Physics 2015-06-05 C. R. Nugent , A. Mainzer , J. Masiero , T. Grav , J. Bauer

<<>> Among the components of the infrared and submillimetre sky background, the closest layer is the thermal emission of dust particles and minor bodies in the Solar System. This contribution is especially important for current and future…

Astrophysics · Physics 2009-11-13 Cs. Kiss , A. Pal , Th. G. Mueller , P. Abraham

In the preparation for ESA's Euclid mission and the large amount of data it will produce, we train deep convolutional neural networks on Euclid simulations classify solar system objects from other astronomical sources. Using transfer…

Instrumentation and Methods for Astrophysics · Physics 2019-03-15 Maggie Lieu , Luca Conversi , Bruno Altieri , Benoît Carry

A considerable amount of information regarding the processes that occurred during the accretion of the early planetesimals is still present among the small bodies of our solar system. A review of our current knowledge of the density of…

Earth and Planetary Astrophysics · Physics 2015-06-04 Benoit Carry

Given the compositional diversity of asteroids, and their distribution in space, it is impossible to consider returning samples from each one to establish their origin. However, the velocity and molecular composition of primary minerals,…

In recent years, understanding asteroids has shifted from light worlds to geological worlds by exploring modern spacecraft and advanced radar and telescopic surveys. However, flyby in 2029 will be an opportunity to conduct an internal…

Instrumentation and Methods for Astrophysics · Physics 2021-06-08 Manuel Ntumba , Saurabh Gore , Jean-Baptiste Awanyo

A comprehensive characterization of the detection efficiency of nine of the major asteroid surveys that have been active over the past two decades is presented. The detection efficiency is estimated on a nightly basis by comparing the…

Earth and Planetary Astrophysics · Physics 2016-03-16 Pasquale Tricarico

Most asteroids are somewhat elongated and have non-zero lightcurve amplitudes. Such asteroids can be detected in large-scale sky surveys even if their mean magnitudes are fainter than the stated sensitivity limits. We explore the detection…

Earth and Planetary Astrophysics · Physics 2021-05-21 Samuel Navarro-Meza , Erin Aadland , David Trilling

Despite the large amount of high quality data generated in recent space encounters with asteroids, the majority of our knowledge about these objects comes from ground based observations. Asteroids travelling in orbits that are potentially…

Earth and Planetary Astrophysics · Physics 2017-05-17 T. Santana-Ros , G. Dudziński , P. Bartczak