Results 11 to 20 of about 164,857 (187)

Characterizing the Modulation and Activation-Triggering Mechanisms of Main-Belt Comets via 3D Thermophysical Modeling of an Ellipsoidal Body. [PDF]

open access: yesJ Geophys Res Planets
Abstract Main‐belt objects (MBOs) with volatile components provide important insights into the solar system's evolution and the origin of Earth's water. In this study, we employ a 3D thermophysical model to simulate the evolution of a representative ellipsoidal main‐belt comet (MBC) and investigate the factors influencing its gas and dust activity. Our
Zhang Y, Hartzell CM.
europepmc   +2 more sources

Thermal Properties of 1847 WISE-observed Asteroids

open access: yesThe Planetary Science Journal, 2022
We present new thermophysical model fits of 1847 asteroids, deriving thermal inertia, diameter, and Bond and visible geometric albedo. We use thermal flux measurements obtained by the Wide-field Infrared Survey Explorer (WISE) during its fully cryogenic ...
Denise Hung   +3 more
doaj   +1 more source

Optical spectroscopy and photometry of main-belt asteroids with a high orbital inclination [PDF]

open access: yesResearch in Astronomy and Astrophysics, Volume 17, Issue 2, article id. 17 (2017), 2020
We carried out low-resolution optical spectroscopy of 51 main-belt asteroids, most of which have highly-inclined orbits. They are selected from D-type candidates in the SDSS-MOC 4 catalog. Using the University of Hawaii 2.2 m telescope and the Inter-University Centre for Astronomy and Astrophysics 2 m telescope in India, we determined the spectral ...
arxiv   +1 more source

Detectability of the Yarkovsky Effect in the Main Belt

open access: yesThe Planetary Science Journal, 2023
We attempt to detect a signal of Yarkovsky-related acceleration in the orbits of 134 main belt asteroids (MBAs) we observed with the University of Hawai’i 88 inch telescope, supplemented with observations publicly available from the Minor Planet Center ...
Denise Hung   +3 more
doaj   +1 more source

Gravity-Assist might be a Solution to Save Earth from Global Warming [PDF]

open access: yesIranian Journal of Astronomy and Astrophysics, 2023
Global warming is one of the problems of human civilization and decarbonization policy is the main solution to this problem. In this work, we propose an alternative method of using the gravity assist by the asteroids to increase the orbital distance of ...
Sohrab Rahvar
doaj   +1 more source

Mid-IR Observations of IRAS, AKARI, WISE/NEOWISE, and Subaru for Large Icy Asteroid (704) Interamnia: A New Perspective of Regolith Properties and Water Ice Fraction

open access: yesThe Astrophysical Journal, 2023
(704) Interamnia is one of the largest asteroids located in the outer main-belt region, which may contain a large amount of water ice underneath its surface.
Jiang Haoxuan   +5 more
doaj   +1 more source

Distant Formation and Differentiation of Outer Main Belt Asteroids and Carbonaceous Chondrite Parent Bodies

open access: yesAGU Advances, 2022
Volatile compositions of asteroids provide information on the Solar System history and the origins of Earth's volatiles. Visible to near‐infrared observations at wavelengths of 4) and low temperatures (10 au) and could be transported to their current ...
H. Kurokawa   +6 more
doaj   +1 more source

Dynamical evolution of basaltic asteroids outside the Vesta family in the inner main belt [PDF]

open access: yesA&A 672, A97 (2023), 2023
Basaltic V-type asteroids are leftovers from the formation and evolution of differentiated planetesimals. They are thought to originate from mantles and crusts of multiple different parent bodies. Identifying the links between individual V-type asteroids and multiple planetesimals is challenging, especially in the inner part of the main asteroid belt ...
arxiv   +1 more source

V-type Asteroids as the Origin of Mesosiderites

open access: yesThe Planetary Science Journal, 2023
We present the results of a campaign of hypervelocity impact experiments on natural mesosiderite targets, using representative main asteroid belt impact speeds. The objective is to document further the surface evolution of iron-rich asteroids.
Guy Libourel   +5 more
doaj   +1 more source

Physical properties of asteroids

open access: yesВісник Астрономічної школи, 2000
The most significant data on the physical properties of main-belt and near-Earth asteroids obtained by photometric, polarimetric, spectroscopic and other techniques, including space missions «Galileo» and NEAR, are presented.
D. F. Lupishko
doaj   +1 more source

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