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The rotational-fission of a rubble-pile asteroid can result in an "asteroid pair", two un-bound asteroids sharing similar orbits. This mechanism might exposes material that previously had never have been exposed to the weathering conditions…

We present the results of BVRI photometry and classification of 53 unusual asteroids, including 35 near-Earth asteroids (NEAs), 6 high eccentricity/inclination asteroids, and 12 recently-identified asteroid-pair candidates. Most of these…

Earth and Planetary Astrophysics · Physics 2012-10-25 Q. -z. Ye

In a previous paper we simulated the orbital evolution of dust particles from the Jupiter Trojan asteroids ejected by the impacts of interplanetary particles, and evaluated their overall configuration in the form of dust arcs. Here we…

Earth and Planetary Astrophysics · Physics 2018-06-20 Xiaodong Liu , Jürgen Schmidt

Context. Known Mars trojans could be primordial small bodies that have remained in their present-day orbits for the age of the Solar System. Their orbital distribution is strongly asymmetric; there are over a dozen objects at the L5 point…

We observed the Mars Trojan asteroids (5261) Eureka and (101429) 1998 VF31 and the candidate Mars Trojan 2001 FR127 at 11.2 and 18.1 microns using Michelle on the Gemini North telescope. We derive diameters of 1.28, 0.78, and <0.52 km,…

Astrophysics · Physics 2009-11-13 D. E. Trilling , A. S. Rivkin , J. A. Stansberry , T. B. Spahr , R. A. Crudo , J. K. Davies

To date, reflectance spectra of Jupiter Trojan asteroids have revealed no distinctive absorption features. For this reason, the surface composition of these objects remains a subject of speculation. Spectra have revealed, however, that the…

Earth and Planetary Astrophysics · Physics 2016-11-15 Michael E. Brown

Asteroids colliding with planets vary in composition and taxonomical type. Among Near-Earth Asteroids (NEAs) are the V-types, basaltic asteroids that are classified via spectroscopic observations. In this work, we study the probability of…

Earth and Planetary Astrophysics · Physics 2017-05-31 M. A. Galiazzo , E. A. Silber , D. Bancelin

Labor intensive experiments are typically required to identify the causal disease variants from a list of disease associated variants in the genome. For designing such experiments, candidate variants are ranked by their strength of genetic…

Quantitative Methods · Quantitative Biology 2017-03-03 Wentian Li , Jan Freudenberg , Young Ju Suh , Yaning Yang

Chi-squared tests for lack of fit are traditionally employed to find evidence against a hypothesized model, with the model accepted if the Karl Pearson statistic comparing observed and expected numbers of observations falling within cells…

Statistics Theory · Mathematics 2021-12-20 Robert G. Staudte

Pearson's chi-square tests are among the most commonly applied statistical tools across a wide range of scientific disciplines, including medicine, engineering, biology, sociology, marketing and business. However, its usage in some areas is…

Methodology · Statistics 2025-05-13 Vladimir Gurvich , Mariya Naumova

A co-orbital asteroid shares the orbit of a secondary body about its primary. Though more commonly encountered as an asteroid that shares a planet's orbit around the Sun, a co-orbital asteroid could similarly share the orbit of the Moon…

Earth and Planetary Astrophysics · Physics 2022-03-16 Cole R. Gregg , Paul A. Wiegert

Trojan asteroids orbit in the Lagrange points of the system Sun-planet-asteroid. Their dynamical stability make their physical properties important proxies for the early evolution of our solar system. To study their origin, we want to…

Earth and Planetary Astrophysics · Physics 2016-01-13 S. Bagnulo , I. N. Belskaya , A. Stinson , A. Christou , G. B. Borisov

In asteroid rendezvous missions, the dynamical environment near the asteroid's surface should be made clear prior to the mission launch. However, most of the asteroids have irregular shapes, which lower the efficiency of calculating their…

Earth and Planetary Astrophysics · Physics 2017-12-20 Shoucun Hu , Jianghui Ji

Polarization phase-curve measurements provide a unique constraint on the surface properties of asteroids that are complementary to those from photometry and spectroscopy, and have led to the identification of the ``Barbarian'' asteroids as…

Earth and Planetary Astrophysics · Physics 2023-05-09 Joseph R. Masiero , Maxime Devogele , Isabella Macias , Joahan Castaneda Jaimes , Alberto Cellino

Due to their strong resonances with their host planet, Trojan asteroids can remain in stable orbits for billions of years. As a result, they are powerful probes for constraining the dynamical and chemical history of the solar system.…

Earth and Planetary Astrophysics · Physics 2022-04-22 Kevin J. Napier , Larissa Markwardt , Fred C. Adams , David W. Gerdes , Hsing Wen Lin

In recent years several small basaltic V-type asteroids have been identified all around the main belt. Most of them are members of the Vesta dynamical family, but an increasingly large number appear to have no link with it. The question…

Earth and Planetary Astrophysics · Physics 2015-10-30 S. Ieva , E. Dotto , D. Lazzaro , D. Perna , D. Fulvio , M. Fulchignoni

Context. To identify the real associations of small bodies, we can use synthetic sets of orbits generated by various methods. These are not perfect methods, therefore the assessment of their quality is an essential task. Aims. In this…

Earth and Planetary Astrophysics · Physics 2021-01-20 T. J. Jopek

The ratio of the average tangential shear signal of different weak lensing source populations around the same lens galaxies, also known as a shear ratio, provides an important test of lensing systematics and a potential source of…

Cosmology and Nongalactic Astrophysics · Physics 2024-11-01 Ni Emas , Chris Blake , Rossana Ruggeri , Anna Porredon

Fragments of small solar system bodies entering Earth's atmosphere have possibly been important contributors of organic compounds to the early Earth. The cyano radical (CN) emission from meteors is considered as potentially one of the most…

The achievable level of precision on photospheric abundances of stars is a major limiting factor on investigations of exoplanet host star characteristics, the chemical histories of star clusters, and the evolution of the Milky Way and other…

Solar and Stellar Astrophysics · Physics 2015-06-22 M. Bedell , J. Melendez , J. Bean , I. Ramirez , P. Leite , M. Asplund