Paul Abell
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View article: Assessing the Potential Visibility of Comets like C/2025 R2 (SWAN) by NEO Surveyor
Assessing the Potential Visibility of Comets like C/2025 R2 (SWAN) by NEO Surveyor Open
We investigate the potential detectability of the newly discovered and close-approaching long-period comet C/2025 R2 (SWAN) by NEO Surveyor using the NEO Surveyor Survey Simulator ( nss ). The comet, with a minimum orbital intersection dis…
View article: The ESA Hera mission on its way to the binary asteroid Didymos: characterization of the asteroid and full documentation of the NASA DART impact
The ESA Hera mission on its way to the binary asteroid Didymos: characterization of the asteroid and full documentation of the NASA DART impact Open
The Hera mission was launched on October 7, 2024 and performed succefully a flyby of Mars on March 12, 2025, which placed the spacecraft on its trajectory to the binary asteroid Didymos. Hera will approach Didymos in October 2026 and start…
View article: Predicted Discovery of Low-Delta V Targets Among the NEO Population by NEO Surveyor
Predicted Discovery of Low-Delta V Targets Among the NEO Population by NEO Surveyor Open
NASA’s Near-Earth Object (NEO) Surveyor mission is an infrared observatory planned to launch no earlier than September 2027 that is designed to discover and characterize asteroids and comets. Its main objective is to identify those objects…
View article: RAMSES: A European rendezvous mission to study tidal effects on the Near-Earth Asteroid Apophis during its 2029 close encounter with the Earth
RAMSES: A European rendezvous mission to study tidal effects on the Near-Earth Asteroid Apophis during its 2029 close encounter with the Earth Open
IntroductionThe ESA RAMSES (Rapid Apophis Mission for SpacE Safety) mission is designed to rendezvous with the Potentially Hazardous Asteroid (99942) Apophis prior to its extremely close approach to Earth on April 13, 2029, at a distance o…
View article: Comet Science with NEO Surveyor
Comet Science with NEO Surveyor Open
Comets are important components of the Near-Earth Object (NEO) population, contributing to potential impact hazards to the Earth. Understanding the number, physical characteristics, and dynamical behavior of these active bodies is crucial …
View article: The Dynamical State of the Didymos System before and after the DART Impact
The Dynamical State of the Didymos System before and after the DART Impact Open
NASA’s Double Asteroid Redirection Test (DART) spacecraft impacted Dimorphos, the natural satellite of (65803) Didymos, on 2022 September 26, as a first successful test of kinetic impactor technology for deflecting a potentially hazardous …
View article: Achievement of the Planetary Defense Investigations of the Double Asteroid Redirection Test (DART) Mission
Achievement of the Planetary Defense Investigations of the Double Asteroid Redirection Test (DART) Mission Open
NASA's Double Asteroid Redirection Test (DART) mission was the first to demonstrate asteroid deflection, and the mission's Level 1 requirements guided its planetary defense investigations. Here, we summarize DART's achievement of those req…
View article: Kinetic deflection change due to target global curvature as revealed by NASA/DART
Kinetic deflection change due to target global curvature as revealed by NASA/DART Open
Kinetic deflection is a planetary defense technique that delivers spacecraft momentum to a small body to deviate its course from Earth. The deflection efficiency depends strongly on the impactor and target. Among them, the contribution of …
View article: The Near-Earth Object Surveyor Mission
The Near-Earth Object Surveyor Mission Open
The Near-Earth Object (NEO) Surveyor mission is a NASA Observatory designed to discover and characterize asteroids and comets. The mission’s primary objective is to find the majority of objects large enough to cause severe regional impact …
View article: The Near-Earth Object Surveyor Mission
The Near-Earth Object Surveyor Mission Open
The Near-Earth Object (NEO) Surveyor mission is a NASA observatory designed to discover and characterize near-Earth asteroids and comets. The mission's primary objective is to find the majority of objects large enough to cause severe regio…
View article: Pre-encounter Predictions of DART Impact Ejecta Behavior and Observability
Pre-encounter Predictions of DART Impact Ejecta Behavior and Observability Open
We overview various efforts within the DART Investigation Team’s Ejecta Working Group to predict the characteristics, quantity, dynamical behavior, and observability of DART impact ejecta. We discuss various methodologies for simulation of…
View article: The ESA Hera Mission: Detailed Characterization of the DART Impact Outcome and of the Binary Asteroid (65803) Didymos
The ESA Hera Mission: Detailed Characterization of the DART Impact Outcome and of the Binary Asteroid (65803) Didymos Open
Hera is a planetary defense mission under development in the Space Safety and Security Program of the European Space Agency for launch in 2024 October. It will rendezvous in late 2026 December with the binary asteroid (65803) Didymos and i…
View article: The Future of Planetary Defense in the Era of Advanced Surveys
The Future of Planetary Defense in the Era of Advanced Surveys Open
International audience
View article: Near-Earth Objects
Near-Earth Objects Open
International audience
View article: Strength In Diversity: Small Bodies as the Most Important Objects in Planetary Sciences
Strength In Diversity: Small Bodies as the Most Important Objects in Planetary Sciences Open
Small bodies, the unaccreted leftovers of planetary formation, are often mistaken for the leftovers of planetary science in the sense that they are everything else after the planets and their satellites (or sometimes just their regular sat…
View article: Methods for Simulating Comet Populations in Preparation for the Near-Earth Object Surveillance Mission
Methods for Simulating Comet Populations in Preparation for the Near-Earth Object Surveillance Mission Open
The Near-Earth Object Surveillance Mission (NEOSM) will provide unprecedented detection, tracking and characterization of Near-Earth Objects (NEOs) using high-cadence imaging from a space-based infrared telescope. Planning for the NEOSM re…
View article: Strength In Diversity: Small Bodies as the Most Important Objects in\n Planetary Sciences
Strength In Diversity: Small Bodies as the Most Important Objects in\n Planetary Sciences Open
Small bodies, the unaccreted leftovers of planetary formation, are often\nmistaken for the leftovers of planetary science in the sense that they are\neverything else after the planets and their satellites (or sometimes just their\nregular …
View article: Meteoritic Material Recovered from the 07 March 2018 Meteorite Fall into the Olympic Coast National Marine Sanctuary
Meteoritic Material Recovered from the 07 March 2018 Meteorite Fall into the Olympic Coast National Marine Sanctuary Open
On 07 March 2018 at 20:05 local time (08 March 03:05 UTC), a dramatic meteor occurred over Olympic Coast National Marine Sanctuary (OCNMS) off of the Washington state coast (OCNMS fall, henceforth). Data to include seismometry (from both o…
View article: ASIME 2018 White Paper. In-Space Utilisation of Asteroids: Asteroid Composition -- Answers to Questions from the Asteroid Miners
ASIME 2018 White Paper. In-Space Utilisation of Asteroids: Asteroid Composition -- Answers to Questions from the Asteroid Miners Open
In keeping with the Luxembourg government's initiative to support the future use of space resources, ASIME 2018 was held in Belval, Luxembourg on April 16-17, 2018. The goal of ASIME 2018: Asteroid Intersections with Mine Engineering, was …
View article: The geomorphology, color, and thermal properties of Ryugu: Implications for parent-body processes
The geomorphology, color, and thermal properties of Ryugu: Implications for parent-body processes Open
Hayabusa2 at the asteroid Ryugu Asteroids fall to Earth in the form of meteorites, but these provide little information about their origins. The Japanese mission Hayabusa2 is designed to collect samples directly from the surface of an aste…
View article: A near-Sun Solar System Twilight Survey with LSST
A near-Sun Solar System Twilight Survey with LSST Open
We propose a LSST Solar System near-Sun Survey, to be implemented during twilight hours, that extends the seasonal reach of LSST to its maximum as fresh sky is uncovered at about 50 square degrees per night (1500 sq. deg. per lunation) in …