David Nesvorný
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View article: Terrestrial Planet Formation from Two Source Reservoirs
Terrestrial Planet Formation from Two Source Reservoirs Open
This work describes new dynamical simulations of terrestrial planet formation. The simulations started at the protoplanetary disk stage, when planetesimals formed and accreted into protoplanets, and continued past the late stage of giant i…
View article: Discovery of 63 New Young Asteroid Families
Discovery of 63 New Young Asteroid Families Open
We searched for young asteroid families -- those with ages t_age < 10 Myr and at least three members -- using the proper element catalog from Nesvorny et al. (2024). Our approach employed the Hierarchical Clustering Method (HCM) in a five-…
View article: Predictions of the LSST Solar System Yield: Near-Earth Objects, Main Belt Asteroids, Jupiter Trojans, and Trans-Neptunian Objects
Predictions of the LSST Solar System Yield: Near-Earth Objects, Main Belt Asteroids, Jupiter Trojans, and Trans-Neptunian Objects Open
The NSF-DOE Vera C. Rubin Observatory is a new 8m-class survey facility presently being commissioned in Chile, expected to begin the 10 yr long Legacy Survey of Space and Time (LSST) by the end of 2025. Using the purpose-built Sorcha surve…
View article: Predictions of the LSST Solar System Yield: Discovery Rates and Characterizations of Centaurs
Predictions of the LSST Solar System Yield: Discovery Rates and Characterizations of Centaurs Open
The Vera C. Rubin Observatory Legacy Survey of Space and Time (LSST) will start by the end of 2025 and operate for 10 yr, offering billions of observations of the southern night sky. One of its main science goals is to create an inventory …
View article: Terrestrial Planet Formation from Two Source Reservoirs
Terrestrial Planet Formation from Two Source Reservoirs Open
This work describes new dynamical simulations of terrestrial planet formation. The simulations started at the protoplanetary disk stage, when planetesimals formed and accreted into protoplanets, and continued past the late stage of giant i…
View article: Dynamical Origins of the Chemical Architecture of the Terrestrial Planets
Dynamical Origins of the Chemical Architecture of the Terrestrial Planets Open
The models most successful in reproducing the dynamical architecture of the inner Solar System invoke a single ring of rocky material that, over 100 Myr, accreted into the rocky planets. This paradigm explains the presence of two closely-s…
View article: The spectral diversity of outer icy bodies revealed by JWST and its link to early Solar System processes
The spectral diversity of outer icy bodies revealed by JWST and its link to early Solar System processes Open
Introduction:Small bodies in the trans-Neptunian region are key to understanding Solar System formation and evolution. Trans-Neptunian objects (TNOs) are relics of planetary formation in the outer protoplanetary disk, but most of them were…
View article: The Captured and the Crossing: Predictions for the LSST Discovery Yields for Neptune Trojans and Centaurs
The Captured and the Crossing: Predictions for the LSST Discovery Yields for Neptune Trojans and Centaurs Open
The giant planet region of the Solar System (5.2 au < a < 30.1 au) can be a highly chaotic and dynamic environment of small body science, whose resident minor bodies can offer unique insights into both early Solar System formation and pres…
View article: Oxidation Constraints on Terrestrial Planet Formation in the Ring Model
Oxidation Constraints on Terrestrial Planet Formation in the Ring Model Open
Dynamical simulations have long been employed to model terrestrial planet formation. Several frameworks, including the Grand Tack [1], ring model [2], and pebble accretion [3], have successfully reproduced the mass, size, and orbital distr…
View article: The Curious Case of Neptune's Naiad
The Curious Case of Neptune's Naiad Open
Naiad is the innermost moon of Neptune, orbiting within the synchronous orbit at less than 2 Neptune radii. It was recently shown that Naiad is in a peculiar 73:69 mean motion resonance with Thalassa, Neptune’s next innermost moon [1]. Com…
View article: Terrestrial planet formation from a ring of planetesimals (Invited)
Terrestrial planet formation from a ring of planetesimals (Invited) Open
The formation of terrestrial planets from a ring of planetesimals was initially proposed by Hansen (2009) as a solution to the planet’s mass distribution pattern, namely with two small planets at the edges of the semi major axis distributi…
View article: Size-Frequency Distribution of S-complex Implanted Asteroids.
Size-Frequency Distribution of S-complex Implanted Asteroids. Open
Introduction: The main asteroid belt (MAB) is known for having a very small total mass (5x10-4 Earth masses) and for being primarily composed of S- and C-complex bodies [1]. Isotopic measurements on meteorites suggest C-complex bodies, man…
View article: Size–Frequency Distribution of Terrestrial Leftover Planetesimals and S-complex Implanted Asteroids
Size–Frequency Distribution of Terrestrial Leftover Planetesimals and S-complex Implanted Asteroids Open
The isotopic composition of meteorites linked to S-complex asteroids has been used to suggest that these asteroids originated in the terrestrial planet’s region, i.e., within 1.5 au, and later got implanted into the main asteroid belt (MAB…
View article: Predictions of the LSST Solar System Yield: Discovery Rates and Characterizations of Centaurs
Predictions of the LSST Solar System Yield: Discovery Rates and Characterizations of Centaurs Open
The Vera C. Rubin Observatory Legacy Survey of Space and Time (LSST) will start by the end of 2025 and operate for ten years, offering billions of observations of the southern night sky. One of its main science goals is to create an invent…
View article: Surface Ages for the Sample Return Asteroids Bennu, Ryugu, and Itokawa
Surface Ages for the Sample Return Asteroids Bennu, Ryugu, and Itokawa Open
The OSIRIS-REx, Hayabusa2, and Hayabusa missions have returned samples from three near-Earth asteroids (NEAs), namely Bennu, Ryugu, and Itokawa, respectively. Insights into the geological and dynamical history of these NEAs can be gleaned …
View article: The Exoplanet Edge: Planets Do Not Induce Observable Transit Timing Variations with a Dominant Transit Timing Variation Period Faster than Half Their Orbital Period
The Exoplanet Edge: Planets Do Not Induce Observable Transit Timing Variations with a Dominant Transit Timing Variation Period Faster than Half Their Orbital Period Open
Transit timing variations (TTVs) are observed for exoplanets at a range of amplitudes and periods, yielding an ostensibly degenerate forest of possible explanations. We offer some clarity in this forest, showing that systems with a distant…
View article: Dust-void evolution driven by turbulent dust flux can induce runaway migration of Earth-mass planets
Dust-void evolution driven by turbulent dust flux can induce runaway migration of Earth-mass planets Open
Torques from asymmetric dust structures (so-called dust-void and filamentary structures) formed around low-mass planets embedded in a nonturbulent dust-gas disk can exceed the torques produced by the gas disk component and then go on to do…
View article: Size-Frequency Distribution of Terrestrial Leftover Planetesimals and S-complex Implanted Asteroids
Size-Frequency Distribution of Terrestrial Leftover Planetesimals and S-complex Implanted Asteroids Open
The isotopic composition of meteorites linked to S-complex asteroids has been used to suggest that these asteroids originated in the terrestrial planet's region, i.e., within 1.5 au, and later got implanted into the main asteroid belt (MAB…
View article: A Spiral Structure in the Inner Oort Cloud
A Spiral Structure in the Inner Oort Cloud Open
As the Galactic tide acts to decouple bodies from the scattered disk it creates a spiral structure in physical space that is roughly 15,000 au in length. The spiral is long-lived and persists in the inner Oort cloud to the present time. He…
View article: Orbital and Absolute Magnitude Distribution of Hilda Population
Orbital and Absolute Magnitude Distribution of Hilda Population Open
The Hilda population of asteroids is located in a large orbital zone of long-term stability associated with the Jupiter J3/2 mean-motion resonance. They are a sister population of the Jupiter Trojans, since both of them are likely made up …
View article: Compositional outcomes of Earth formation from a narrow ring
Compositional outcomes of Earth formation from a narrow ring Open
International audience
View article: Orbit, meteoroid size, and cosmic ray exposure history of the Aguas Zarcas <scp>CM2</scp> breccia
Orbit, meteoroid size, and cosmic ray exposure history of the Aguas Zarcas <span>CM2</span> breccia Open
The Aguas Zarcas (Costa Rica) CM2 carbonaceous chondrite fell during nighttime in April 2019. Security and dashboard camera videos of the meteor were analyzed to provide a trajectory, light curve, and orbit of the meteoroid. The trajectory…
View article: Orbital and absolute magnitude distribution of Hilda population
Orbital and absolute magnitude distribution of Hilda population Open
The Hilda population of asteroids is located in a large orbital zone of long-term stability associated with the Jupiter J3/2 mean motion resonance. They are a sister population of the Jupiter Trojans, since both of them are likely made up …
View article: A Pre-flyby View on the Origin of Asteroid Donaldjohanson, a Target of the NASA Lucy Mission
A Pre-flyby View on the Origin of Asteroid Donaldjohanson, a Target of the NASA Lucy Mission Open
The NASA Lucy mission is scheduled to fly by the main-belt asteroid (52246) Donaldjohanson on 2025 April 20. Donaldjohanson (DJ hereafter) is a member of the primitive (C-type class) Erigone collisional asteroid family located in the inner…
View article: Occultation constraints on solar system formation models
Occultation constraints on solar system formation models Open
The process by which a system of non-luminous bodies form around a star is fundamental to understanding the origins of our own solar system and how it fits into the context of other systems we have begun to study around other stars. Some b…
View article: A Spiral Structure in the Inner Oort Cloud
A Spiral Structure in the Inner Oort Cloud Open
As the Galactic tide acts to decouple bodies from the scattered disk it creates a spiral structure in physical space that is roughly 15,000 au in length. The spiral is long-lived and persists in the inner Oort cloud to the present time. He…
View article: Reassessing the origin and evolution of Ecliptic Comets in the Planet-9 Scenario
Reassessing the origin and evolution of Ecliptic Comets in the Planet-9 Scenario Open
A group of newly observed extreme trans-Neptunian objects exhibit unexpected orbital confinement, characterized by the alignment of orbital angular momentum vectors and apsidal lines. It is proposed that an undiscovered giant planet, named…
View article: The Exoplanet Edge: Planets Don't Induce Observable TTVs with a Dominant TTV Period Faster than Half their Orbital Period
The Exoplanet Edge: Planets Don't Induce Observable TTVs with a Dominant TTV Period Faster than Half their Orbital Period Open
Transit timing variations (TTVs) are observed for exoplanets at a range of amplitudes and periods, yielding an ostensibly degenerate forest of possible explanations. We offer some clarity in this forest, showing that systems with a distant…
View article: Mechanisms and timing of carbonaceous chondrite delivery to the Earth
Mechanisms and timing of carbonaceous chondrite delivery to the Earth Open
The nucleosynthetic isotope signatures of meteorites and the bulk silicate Earth (BSE) indicate that Earth consists of a mixture of "carbonaceous" (CC) and "non-carbonaceous" (NC) materials. We show that the fration of CC material recorded…
View article: On the Early Thermal Processing of Planetesimals during and after the Giant Planet Instability
On the Early Thermal Processing of Planetesimals during and after the Giant Planet Instability Open
Born as ice-rich planetesimals, cometary nuclei were gravitationally scattered onto their current orbits in the Kuiper Belt and the Oort Cloud during the giant planets’ dynamical instability in the early stages of our solar system’s histor…