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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…

The cryogenic WISE mission in 2010 was extremely sensitive to asteroids and not biased against detecting dark objects. The albedos of 428 Near Earth Asteroids (NEAs) observed by WISE during its fully cryogenic mission can be fit quite well…

Earth and Planetary Astrophysics · Physics 2016-09-21 Edward L. Wright , Amy Mainzer , Joseph Masiero , Tommy Grav , James Bauer

Sparse and serendipitous asteroid photometry obtained by wide field surveys such as the Asteroid Terrestrial-impact Last Alert System (\ATLAS) is a valuable resource for studying the properties of large numbers of small Solar System bodies.…

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 near-infrared (0.78-2.45 {\mu}m) reflectance spectra for nine middle and outer main belt (a > 2.5 AU) basaltic asteroids. Three of these objects are spectrally distinct from all classifications in the Bus-DeMeo system and could…

We present BVRI colors of 13 Jovian and 8 Saturnian irregular satellites obtained with the 2.56m Nordic Optical Telescope on La Palma, the 6.5m Magellan Baade Telescope on La Campanas, and the 6m MMT on Mt. Hopkins. The observations were…

Astrophysics · Physics 2015-06-24 Tommy Grav , Matthew J. Holman , Brett Gladman , Kaare Aksnes

Investigations of the main asteroid belt and efforts to constrain that population's physical characteristics involve the daunting task of studying hundreds of thousands of small bodies. Taxonomic systems are routinely employed to study the…

Earth and Planetary Astrophysics · Physics 2018-06-27 Paul S. Hardersen , Vishnu Reddy , Edward Cloutis , Matt Nowinski , Margaret Dievendorf , Russell M. Genet , Savan Becker , Rachel Roberts

We present observations of ~7 square degrees of the North American and Pelican Nebulae region at 24, 70, and 160 microns with the Spitzer Space Telescope Multiband Imaging Photometer for Spitzer (MIPS). We incorporate the MIPS observations…

We describe a new method to identify young, late-type stars within ~150 pc of the Earth that employs visual or near-infrared data and the GALEX GR4/5 database. For spectral types later than K5, we demonstrate that the ratio of GALEX…

Solar and Stellar Astrophysics · Physics 2011-02-02 David R. Rodriguez , M. S. Bessell , B. Zuckerman , Joel H. Kastner

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

Main belt asteroid (6478) Gault has been dynamically linked with two overlapping asteroid families: Phocaea, dominated by S-type asteroids, and Tamara, dominated by low-albedo C-types. This object has recently become an interesting case for…

Earth and Planetary Astrophysics · Physics 2019-08-14 Juan A. Sanchez , Vishnu Reddy , Audrey Thirouin , Edward L. Wright , Tyler R. Linder , Theodore Kareta , Benjamin Sharkey

We discuss measurements of the properties of about 10,000 asteroids detected in 500 deg2 of sky in the Sloan Digital Sky Survey (SDSS) commissioning data. The moving objects are detected in the magnitude range 14 < r < 21.5, with a baseline…

Astrophysics · Physics 2008-11-26 Z. Ivezic , S. Tabachnik , R. Rafikov , R. H. Lupton , T. Quinn , M. Hammergren , L. Eyer et al

We report near-infrared (0.7-2.5 micron) reflectance spectra for each of the six target asteroids of the forthcoming NASA Discovery-class mission Lucy. Five Jupiter Trojans (the binary (617) Patroclus system, (3548) Eurybates, (21900) Orus,…

Earth and Planetary Astrophysics · Physics 2019-10-30 Benjamin N. L. Sharkey , Vishnu Reddy , Juan A. Sanchez , Matthew R. M. Izawa , Joshua P. Emery

V455 Aur is a detached eclipsing binary containing two F-stars in a 3.15-d orbit with a small eccentricity. Its eclipses were discovered in data from the Hipparcos satellite and a spectroscopic orbit was obtained by Griffin (2001, 2013).…

Solar and Stellar Astrophysics · Physics 2021-06-09 John Southworth

Near-Earth binary asteroid (175706) 1996 FG3 is the current backup target of the ESA MarcoPolo-R mission, selected for the study phase of ESA M3 missions. It is a primitive (C-type) asteroid that shows significant variation in its visible…

Earth and Planetary Astrophysics · Physics 2013-07-23 J. de Leon , V. Lorenzi , V. Ali-Lagoa , J. Licandro , N. Pinilla-Alonso , H. Campins

The recent discovery of the first V-type asteroid in the middle belt, (21238) 1995WV7, located at ~2.54 AU, raises the question of whether it came from (4) Vesta or not. In this paper, we present spectroscopic observations indicating the…

Astrophysics · Physics 2009-11-13 F. Roig , D. Nesvorny , R. Gil-Hutton , D. Lazzaro

We present new results of the observing program which is a part of the NEOROCKS project aimed to improve knowledge on physical properties of near-Earth Objects (NEOs) for planetary defense. Photometric observations were performed using the…

We present analysis of the asteroid surface density distribution of main belt asteroids (mean perihelion $\Delta \simeq 2.404$ AU) in five ecliptic latitude fields, $-17 \gtsimeq \beta(\degr) \ltsimeq +15$, derived from deep \textit{Large…

We observed asteroid (596) Scheila and its ejecta cloud using the Swift UV-optical telescope. We obtained photometry of the nucleus and the ejecta, and for the first time measured the asteroid's reflection spectrum between 290 - 500 nm. Our…

Earth and Planetary Astrophysics · Physics 2015-05-28 D. Bodewits , M. S. Kelley , J. -Y. Li , W. B. Landsman , S. Besse , M. F. A'Hearn

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…