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The inner asteroid belt between 2.1 and 2.5 au is of particular dynamical significance because it is the dominant source of both chondritic meteorites and near-Earth asteroids. This inner belt is bounded by an eccentricity-type secular…

Earth and Planetary Astrophysics · Physics 2022-09-14 Apostolos A. Christou , Stanley F. Dermott , Dan Li

Processes such as the solar wind sputtering and micrometeorite impacts can modify optical properties of surfaces of airless bodies. This explains why spectra of the main belt asteroids, exposed to these `space weathering' processes over…

Earth and Planetary Astrophysics · Physics 2015-05-19 David Nesvorny , William F. Bottke , David Vokrouhlicky , Clark R. Chapman , Scot Rafkin

The orbital dynamics of a spacecraft orbiting around irregular small celestial bodies is a challenging problem. Difficulties to model the gravity field of these bodies arise from the poor knowledge of the exact shape as observed from the…

Earth and Planetary Astrophysics · Physics 2023-07-26 L. B. T. Santos , L. O. Marchi , P. A. Sousa-Silva , D. M. Sanchez , S. Aljbaae , A. F. B. A. Prado

Metallic bodies that were the cores of differentiated bodies are sources of iron meteorites and are considered to have formed early in the terrestrial planet region before migrating to the main asteroid belt. Surface temperatures and mutual…

Earth and Planetary Astrophysics · Physics 2021-03-31 Ryo Ogawa , Akiko M. Nakamura , Ayako I. Suzuki , Sunao Hasegawa

Gaia Data Release 3 contains accurate photometric observations of more than 150,000 asteroids covering a time interval of 34 months. With a total of about 3,000,000 measurements, a typical number of observations per asteroid ranges from a…

Earth and Planetary Astrophysics · Physics 2023-06-28 Josef Durech , Josef Hanus

Tens of thousands of sparse-in-time lightcurves from astrometric projects are publicly available. We investigate these data and use them in the lightcurve inversion method to derive new asteroid models. By having a greater number of models…

Rotation properties (spin-axis direction and rotation period) and coarse shape models of asteroids can be reconstructed from their disk-integrated brightness when measured from various viewing geometries. These physical properties are…

Earth and Planetary Astrophysics · Physics 2019-10-16 Josef Durech , Josef Hanus , Radim Vanco

The study of asteroid families has provided tremendous insight into the forces that sculpted the main belt and continue to drive the collisional and dynamical evolution of asteroids. The identification of asteroid families within the NEO…

Astrophysics · Physics 2009-11-11 Hai Fu , Robert Jedicke , Daniel D. Durda , Ronald Fevig , James V. Scotti

The nature and origin of the asteroids orbiting in near-Earth space, including those on a potentially hazardous trajectory, is of both scientific interest and practical importance. We aim here at determining the taxonomy of a large sample…

Earth and Planetary Astrophysics · Physics 2016-02-24 Benoit Carry , Enrique Solano , Siegfried Eggl , Francesca E. DeMeo

We describe systematic ranging, an orbit determination technique especially suitable to assess the near-term Earth impact hazard posed by newly discovered asteroids. For these late warning cases, the time interval covered by the…

Earth and Planetary Astrophysics · Physics 2015-07-15 D. Farnocchia , S. R. Chesley , M. Micheli

We study the constraining power of a high-precision measurement of the gravity field for Uranus and Neptune, as could be delivered by a low periapse orbiter. Our study is practical, assessing the possible deliverables and limitations of…

Earth and Planetary Astrophysics · Physics 2022-03-25 Naor Movshovitz , Jonathan J. Fortney

Many asteroids that make close encounters with terrestrial planets are in a binary configuration. Here we calculate the relevant encounter timescales and investigate the effects of encounters on a binary's mutual orbit. We use a combination…

Earth and Planetary Astrophysics · Physics 2015-06-03 Julia Fang , Jean-Luc Margot

Today there are numerous studies on asteroid mining. They elaborate on selecting the right objects, prospecting missions, potential asteroid redirection, and the mining process itself. For economic reasons, most studies focus on mining…

Earth and Planetary Astrophysics · Physics 2018-12-27 Thomas I. Maindl , Roman Miksch , Birgit Loibnegger

Context. To investigate the distribution of rotation periods of asteroids from different regions of the Solar System and distribution of diameters of near-Earth asteroids (NEAs). Aims. Verify if nonextensive statistics satisfactorily…

Earth and Planetary Astrophysics · Physics 2012-05-29 Alberto S. Betzler , Ernesto P. Borges

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

Thermal inertia determines the temperature distribution over the surface of an asteroid and therefore governs the magnitude the Yarkovsky effect. The latter causes gradual drifting of the orbits of km-sized asteroids and plays an important…

Astrophysics · Physics 2007-05-23 Marco Delbo , Aldo Dell'oro , Alan W. Harris , Stefano Mottola , Michael Mueller

In order to fully understand the shapes of asteroids families in the 3-dimensional space of the proper elements $(a_{\rm p}, e_{\rm p}, \sin I_{\rm p})$ it is necessary to compare observed asteroids with N-body simulations. To this point,…

Earth and Planetary Astrophysics · Physics 2018-10-10 Miroslav Brož , Alessandro Morbidelli

The observed near-Earth asteroid population contains very few objects with small perihelion distances, say, q<=0.2 au. NEAs that currently have orbits with larger q might be hiding a past evolution during which they have approached closer…

Earth and Planetary Astrophysics · Physics 2021-08-04 Athanasia Toliou , Mikael Granvik , Georgios Tsirvoulis

The metal content of asteroids is of great interest, not only for theories of their origins and the evolution of the solar system but, in the case of near-Earth objects (NEOs), also for impact mitigation planning and endeavors in the field…

Earth and Planetary Astrophysics · Physics 2014-03-26 Alan W. Harris , Line Drube

Interplanetary dust in the inner solar system originates from multiple sources, including short-period comets and main-belt asteroids. In this work, we focus specifically on the dynamical evolution of asteroid-derived dust using N-body…

Earth and Planetary Astrophysics · Physics 2026-05-13 Aanchal Sahu , Jayesh Pabari
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