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The identification of basaltic asteroids in the asteroid Main Belt and the description of their surface mineralogy is necessary to understand the diversity in the collection of basaltic meteorites. Basaltic asteroids can be identified from…

Astrophysics · Physics 2008-01-14 R. Duffard , F. Roig

We obtained spectra of six of the largest asteroids (2201, 4183, 4486, 5143, 6063, and 269690) associated with Taurid complex. The observations were made with the IRTF telescope equipped with the spectro-imager SpeX. Their taxonomic…

Earth and Planetary Astrophysics · Physics 2014-12-10 M. Popescu , M. Birlan , D. A. Nedelcu , J. Vaubaillon , C. P. Cristescu

The main belt asteroids 458271 (2010 UM26) and 2010 RN221 share almost identical orbital elements and currently appear as comoving objects 30 arcsec apart in the plane of the sky. They are products of the breakup of a parent object, or the…

Earth and Planetary Astrophysics · Physics 2023-09-14 David Jewitt , Yonyoung Kim , Jing Li , Max Mutchler

(1270) Datura is the largest member of a very young asteroid cluster that was thought to be broken-up 0.45 Myr ago. The light-curve and the rotation-resolved reflectance spectra (0.6 um - 1.0 um) were observed in order to find "fresh"…

Astrophysics · Physics 2009-11-13 Naruhisa Takato

The analysis of the composition of primitive C$-$complex asteroids is essential to understand the distribution of volatiles in the Solar System since its formation. Primitive low-albedo families within the inner main asteroid belt are of…

The asteroid (16) Psyche is of scientific interest because it contains ~ 1% of the total mass of the asteroid belt and is thought to be the remnant metallic core of a protoplanet. Radar observations have indicated the significant presence…

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

The asteroid (142) Polana is classified as a B-type asteroid located in the inner Main Belt. This asteroid is the parent of the New Polana family, which has been proposed to be the likely source of primitive near-Earth asteroids such as the…

Earth and Planetary Astrophysics · Physics 2024-07-01 Driss Takir , Joshua P. Emery , William F. Bottke , Anicia Arredondo

Using the multi-band imager MapCam onboard the OSIRIS-REx (Origins, Spectral Interpretation, Resource Identification, and Security-Regolith Explorer) spacecraft, we identified 77 instances of proposed exogenic materials distributed globally…

V-type asteroids in the inner Main Belt (a < 2.5 AU) and the HED meteorites are thought to be genetically related to one another as collisional fragments from the surface of the large basaltic asteroid 4 Vesta. We investigate this…

Earth and Planetary Astrophysics · Physics 2015-05-18 Nicholas Moskovitz , Mark Willman , Thomas Burbine , Richard Binzel , Schelte Bus

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

Six asteroids including two NEAs, one of which is PHA, accessible for observation in September 2012 were investigated using a low-resolution spectrophotometry in the range 0.35-0.90 um with the aim to study features of their reflectance…

Earth and Planetary Astrophysics · Physics 2015-09-23 Vladimir V. Busarev , Sergey I. Barabanov , Vyacheslav S. Rusakov , Vasiliy B. Puzin , Valery V. Kravtsov

We probed the surface environment of large ($>$80 km in diameter) T-type asteroids, a taxonomic type relatively ill-constrained as an independent group, and discussed their place of origin. We performed spectroscopic observations of two…

Earth and Planetary Astrophysics · Physics 2022-10-26 Yuna G. Kwon , Sunao Hasegawa , Sonia Fornasier , Masateru Ishiguro , Jessica Agarwal

Spectrally blue (B-type) asteroids are rare, with the second discovered asteroid Pallas being the largest and most famous example. We conducted a focused, infrared spectroscopic survey of B-type asteroids to search for water-related…

Earth and Planetary Astrophysics · Physics 2015-05-19 Bin Yang , David Jewitt

Ground-based observations of `Barbarian' L-type asteroids at 1 to 2.5-$\mu$m indicate that their near-infrared spectra are dominated by the mineral spinel, which has been attributed to a high abundance of calcium-aluminum inclusions (CAIs)…

Earth and Planetary Astrophysics · Physics 2024-05-22 Jonathan Gomez Barrientos , Katherine de Kleer , Bethany L. Ehlmann , Francois L. H. Tissot , Jessica Mueller

From a set of adaptive optics (AO) observations collected with the W.M. Keck telescope between August and September 2009, we derived the orbital parameters of the most recently discovered satellites of the large C-type asteroid (93)…

Methods to constrain the surface mineralogy of asteroids have seen considerable development during the last decade with advancement in laboratory spectral calibrations and validation of our interpretive methodologies by spacecraft…

Earth and Planetary Astrophysics · Physics 2016-08-31 Vishnu Reddy , Tasha L. Dunn , Cristina A. Thomas , Nicholas A. Moskovitz , Thomas H. Burbine

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…

Differentiated asteroids are rare in the main asteroid belt despite evidence for ~100 distinct differentiated bodies in the meteorite record. We have sought to understand why so few main-belt asteroids differentiated and where those…

A small number of anomalously bright boulders on the near-Earth, rubble-pile asteroid (101955) Bennu were recently identified as eucritic material originating from asteroid (4) Vesta. Building on this discovery, we explored the global…

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