178 citations · 761 across the 21 of their papers we have counts for
21 papers
Spectral Effects of Shock Darkening on Ordinary Chondrite and Howardite, Eucrite, and Diogenite meteorites
Juan A. Sanchez, Vishnu Reddy, Lucille Le Corre +2
Impacts are the most ubiquitous processes on planetary bodies in our solar system. During these impact events, shock waves can deposit enough energy to produce shock-induced darken…
Mineralogical Characterization and Phase Angle Study of Two Binary Near-Earth Asteroids, Potential Targets for NASA's Janus Mission
Lucille Le Corre, Juan A. Sanchez, Vishnu Reddy +5
Ground-based characterization of spacecraft targets prior to mission operations is critical to properly plan and execute measurements. Understanding surface properties, like minera…
Characterization of Exogenic Boulders on Near-Earth Asteroid (101955) Bennu from OSIRIS-REx Color Images
Lucille Le Corre, Vishnu Reddy, William F. Bottke +10
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) Ves…
The Sariçiçek howardite fall in Turkey: Source crater of HED meteorites on Vesta and impact risk of Vestoids
Ozan Unsalan, Peter Jenniskens, Qing-Zhu Yin +76
The Sariçiçek howardite meteorite shower consisting of 343 documented stones occurred on 2 September 2015 in Turkey and is the first documented howardite fall. Cosmogenic isotopes…
Asteroid Ryugu Before the Hayabusa2 Encounter
Koji Wada, Matthias Grott, Patrick Michel +31
Asteroid (162173) Ryugu is the target object of Hayabusa2, an asteroid exploration and sample return mission led by Japan Aerospace Exploration Agency (JAXA). Ground-based observat…
Surface Composition of (99942) Apophis
Vishnu Reddy, Juan Sanchez, Roberto Furfaro +6
On April 13, 2029, near-Earth asteroid (NEA) (99942) Apophis will pass at a distance of 6 Earth radii from Earth. This event will provide researchers with a unique opportunity to s…
Physical Characterization of ~2-meter Diameter Near-Earth Asteroid 2015 TC25: A possible boulder from E-type Asteroid (44) Nysa
Vishnu Reddy, Juan A. Sanchez, William F. Bottke +11
Small near-Earth asteroids (>20 meters) are interesting because they are progenitors for meteorites in our terrestrial collection. Crucial to our understanding of the effectiveness…
Surface Albedo and Spectral Variability of Ceres
Jian-Yang Li, Vishnu Reddy, Andreas Nathues +21
Previous observations suggested that Ceres has active but possibly sporadic water outgassing, and possibly varying spectral characteristics in a time scale of months. We used all a…
Photometric Properties of Ceres from Telescopic Observations using Dawn Framing Camera Color Filters
Vishnu Reddy, Jian-Yang Li, Bruce L. Gary +7
The dwarf planet Ceres is likely differentiated similar to the terrestrial planets but with a water/ice dominated mantle and an aqueously altered crust. Detailed modeling of Ceres'…
Spectral calibration for deriving surface mineralogy of Asteroid (25143) Itokawa from Hayabusa Near-Infrared Spectrometer (NIRS) Data
Megha Bhatt, Vishnu Reddy, Lucille Le Corre +6
We present spectral calibration equations for determining mafic silicate composition of near-Earth asteroid (25143) Itokawa from visible/near-infrared spectra measured using the Ne…
Composition of Potentially Hazardous Asteroid (214869) 2007 PA8: An H Chondrite from the Outer Asteroid Belt
Juan A. Sanchez, Vishnu Reddy, Melissa Dykhuis +2
Potentially hazardous asteroids (PHAs) represent a unique opportunity for physical characterization during their close approaches to Earth. The proximity of these asteroids makes t…
Olivine-rich exposures at Bellicia and Arruntia craters on (4) Vesta from Dawn FC
Guneshwar Thangjam, Andreas Nathues, Kurt Mengel +9
We present an analysis of the olivine-rich exposures at Bellicia and Arruntia craters using Dawn Framing Camera (FC) color data. Our results confirm the existence of olivine-rich m…
The contamination of the surface of Vesta by impacts and the delivery of the dark material
D. Turrini, J. -P. Combe, T. B. McCord +10
The Dawn spacecraft observed the presence of dark material, which in turn proved to be associated with OH and H-rich material, on the surface of Vesta. The source of this dark mate…
Olivine-dominated asteroids: Mineralogy and origin
Juan A. Sanchez, Vishnu Reddy, Michael S. Kelley +8
Olivine-dominated asteroids are a rare type of objects formed either in nebular processes or through magmatic differentiation. The analysis of meteorite samples suggest that at lea…
Global Photometric Properties of Asteroid (4) Vesta Observed with Dawn Framing Camera
Jian-Yang Li, Lucille Le Corre, Stefan E. Schröder +9
Dawn spacecraft orbited Vesta for more than one year and collected a huge volume of multispectral, high-resolution data in the visible wavelengths with the Framing Camera. We prese…
Olivine or Impact Melt: Nature of the "Orange" Material on Vesta from Dawn
Lucille Le Corre, Vishnu Reddy, Nico Schmedemann +18
NASA's Dawn mission observed a great variety of colored terrains on asteroid (4) Vesta during its survey with the Framing Camera (FC). Here we present a detailed study of the orang…
Comparing Dawn, Hubble Space Telescope, and Ground-Based Interpretations of (4) Vesta
Vishnu Reddy, Jian-Yang Li, Lucille Le Corre +10
Observations of asteroid 4 Vesta by NASA's Dawn spacecraft are interesting because its surface has the largest range of albedo, color and composition of any other asteroid visited…
Lithologic Mapping of HED Terrains on Vesta using Dawn Framing Camera Color Data
Guneshwar Thangjam, Vishnu Reddy, Lucille Le Corre +8
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…
Composition of Near-Earth Asteroid (4179) Toutatis
Vishnu Reddy, Juan Andreas Sanchez, Michael Gaffey +3
Surface composition of near-Earth asteroid (4179) Toutatis is consistent with an undifferentiated L-chondrite composition. This is inconsistent with early observations that suggest…
Composition of Near-Earth Asteroid 2008 EV5: Potential target for Robotic and Human Exploration
Vishnu Reddy, Lucille Le Corre, Michael Hicks +5
We observed potentially hazardous asteroid (PHA) 2008 EV5 in the visible (0.30-0.92 microns) and near-IR (0.75-2.5 microns) wavelengths to determine its surface composition. This a…
Delivery of Dark Material to Vesta via Carbonaceous Chondritic Impacts
Vishnu Reddy, Lucille Le Corre, David P. O'Brien +22
NASA's Dawn spacecraft observations of asteroid (4) Vesta reveal a surface with the highest albedo and color variation of any asteroid we have observed so far. Terrains rich in low…