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36 papers · 1 filter
A Contact Binary Satellite of the Asteroid (152830) Dinkinesh
Harold F. Levison, Simone Marchi, Keith S. Noll +3
Asteroids with diameters less than about 5 km have complex histories because they are small enough for radiative torques, YORP, to be a notable factor in their evolution. (152830)…
A library of meteoroid environments encountered by spacecraft in the inner solar system
Althea V. Moorhead, Katie Milbrandt, Aaron Kingery
NASA's Meteoroid Engineering Model (MEM) is designed to provide aerospace engineers with an accurate description of potentially hazardous meteoroids. It accepts a spacecraft trajec…
A reference meteor magnitude for intercomparable fluxes
Althea V. Moorhead, Denis Vida, Peter G. Brown +1
The rate at which meteors pass through Earth's atmosphere has been measured or estimated many times over; existing flux measurements span at least 12 astronomical magnitudes, or ro…
Quantifying the Bulk Density of Southern Delta Aquariid Meteoroids: Insights from the Canadian Automated Meteor Observatory
Arazi Pinhas, Zbyszek Krzeminski, Denis Vida +1
Physical properties of ten millimeter-sized meteoroids from the Southern Delta Aquariids (SDA) shower are derived using optical observations from the Canadian Automated Meteor Obse…
Direct measurement of decimeter-sized rocky material in the Oort cloud
Denis Vida, Peter G. Brown, Hadrien A. R. Devillepoix +10
The Oort cloud is thought to be a reservoir of icy planetesimals and the source of long-period comets (LPCs) implanted from the outer Solar System during the time of giant planet f…
Computing optical meteor flux using Global Meteor Network data
Denis Vida, Rhiannon C. Blaauw Erskine, Peter G. Brown +3
Meteor showers and their outbursts are the dominant source of meteoroid impact risk to spacecraft on short time scales. Meteor shower prediction models depend on historical observa…