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There are only a few known main belt (MB) asteroid families with ages greater than 2 Gyr (Bro\v{z} et al. 2013, Spoto et al. 2015). Estimates based on the family producing collision rate suggest that the lack of >2 Gyr-old families may be…

Earth and Planetary Astrophysics · Physics 2016-11-15 Bryce T. Bolin , Marco Delbo , Alessandro Morbidelli , Kevin J. Walsh

The Mars crossing region constitutes a path to deliver asteroids from the Inner Main Belt to the Earth crossing space. While both the Inner Main Belt and the population of Earth crossing asteroids contains a significant fraction of…

Earth and Planetary Astrophysics · Physics 2015-06-16 A. O. Ribeiro , F. Roig , M. Cañada-Assandri , J. M. F. Carvano , F. L. Jasmin , A. Alvarez-Candal , R. Gil-Hutton

We discuss optical colors of 10,592 asteroids with known orbits selected from a sample of 58,000 moving objects observed by the Sloan Digital Sky Survey (SDSS). This is more than ten times larger sample that includes both orbital parameters…

Vesta is the only currently identified asteroid for which we possess samples, which revealed us that the asteroid is differentiated and possesses a relatively thin basaltic crust that survived to the evolution of the asteroid belt and the…

Earth and Planetary Astrophysics · Physics 2016-08-24 S. Pirani , D. Turrini

The main belt, the region between the orbits of Mars and Jupiter, is home to more than 1 million asteroids. These asteroids form orbital groups, (i.e., asteroid families formed by collisions) and also spectral groups (taxonomies) with…

Earth and Planetary Astrophysics · Physics 2026-03-25 Michael Vávra , Miroslav Brož

We have observed the lightcurves of 13 V-type asteroids ((1933) Tinchen, (2011) Veteraniya, (2508) Alupka, (3657) Ermolova, (3900) Knezevic, (4005) Dyagilev, (4383) Suruga, (4434) Nikulin, (4796) Lewis, (6331) 1992 $\mathrm{FZ_{1}}$, (8645)…

The classification of the minor bodies of the Solar System based on observables has been continuously developed and iterated over the past 40 years. While prior iterations followed either the availability of large observational campaigns or…

Earth and Planetary Astrophysics · Physics 2022-09-21 Max Mahlke , Benoit Carry , Pierre-Alexandre Mattei

The surface composition of Vesta, the most massive intact basaltic object in the asteroid belt, is interesting because it provides us with an insight into magmatic differentiation of planetesimals that eventually coalesced to form the…

Primitive asteroids include C-, P-, and D-classes, known to be dark and having spectra mostly featureless. They differ in the spectral slope, which ranges from moderate values for C-types, and progressively increases in P- and D-types, the…

Earth and Planetary Astrophysics · Physics 2026-01-27 Noemie El-Bez-Sebastien , Sonia Fornasier , Antoine Seurat , Antonin Wargnier

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

We analyzed the surface of Vesta at visible wavelengths, using the data of the Visible and InfraRed mapping spectrometer (VIR) on board the Dawn spacecraft. We mapped the variations of various spectral parameters on the entire surface of…

Earth and Planetary Astrophysics · Physics 2021-09-22 B. Rousseau , M. C. De Sanctis , A. Raponi , M. Ciarniello , E. Ammannito , A. Frigeri , F. G. Carrozzo , F. Tosi , P. Scarica , S. Fonte , C. A. Raymond , C. T. Russel

We present ultraviolet photometry (NUV band, 180--280 nm) of 405 asteroids observed serendipitously by the Galaxy Evolution Explorer (GALEX) from 2003--2012. All asteroids in this sample were detected by GALEX at least twice. Unambiguous…

Earth and Planetary Astrophysics · Physics 2015-08-19 Adam Waszczak , Eran O. Ofek , Shrinivas R. Kulkarni

The NASA Dawn mission has extensively examined the surface of asteroid Vesta, the second most massive body in the main belt. The high quality of the gathered data provides us with an unique opportunity to determine the surface and internal…

Earth and Planetary Astrophysics · Physics 2015-06-16 S. Marchi , W. F. Bottke , D. P. O'Brien , P. Schenk , S. Mottola , M. C. De Sanctis , D. A. Kring , D. A. Williams , C. A. Raymond , C. T. Russell

We present revised near-infrared albedo fits of 2835 Main Belt asteroids observed by WISE/NEOWISE over the course of its fully cryogenic survey in 2010. These fits are derived from reflected-light near-infrared images taken simultaneously…

Earth and Planetary Astrophysics · Physics 2015-06-22 Joseph R. Masiero , T. Grav , A. K. Mainzer , C. R. Nugent , J. M. Bauer , R. Stevenson , S. Sonnett

Asteroid families, traditionally defined as clusters of objects in orbital parameter space, often have distinctive optical colors. We show that the separation of family members from background interlopers can be improved with the aid of…

Current amount of ~500 asteroid models derived from the disk-integrated photometry by the lightcurve inversion method allows us to study not only the spin-vector properties of the whole population of MBAs, but also of several individual…

Earth and Planetary Astrophysics · Physics 2015-06-17 J. Hanuš , M. Brož , J. Ďurech , B. D. Warner , J. Brinsfield , R. Durkee , D. Higgins , R. A. Koff , J. Oey , F. Pilcher , R. Stephens , L. P. Strabla , Q. Ulisse , R. Girelli

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

Families of asteroids generated by the collisional fragmentation of a common parent body have been identified using clustering methods of asteroids in their proper orbital element space. An alternative method has been developed in order to…

Using albedos from WISE/NEOWISE to separate distinct albedo groups within the Main Belt asteroids, we apply the Hierarchical Clustering Method to these subpopulations and identify dynamically associated clusters of asteroids. While this…

Earth and Planetary Astrophysics · Physics 2015-06-15 Joseph R. Masiero , A. K. Mainzer , J. M. Bauer , T. Grav , C. R. Nugent , R. Stevenson

We present the results of a project to detect small (~1 km) main-belt asteroids with the 3.6 meter Canada-France-Hawaii Telescope (CFHT). We observed in 2 filters (MegaPrime g' and r') in order to compare the results in each band. Owing to…

Astrophysics · Physics 2008-11-26 Paul Wiegert , David Balam , Andrea Moss , Christian Veillet , Martin Connors , Ian Shelton