Results 21 to 30 of about 121,017 (322)
Volumes and bulk densities of forty asteroids from ADAM shape modeling [PDF]
, 2017 Context. Disk-integrated photometric data of asteroids do not contain accurate information on shape details or size scale. Additional data such as disk-resolved images or stellar occultation measurements further constrain asteroid shapes and allow size ...
J. Hanus̆ +13 more
semanticscholar +1 more source
, 2015 Asteroids and comets are remnants from the era of Solar System formation over 4.5 billion years ago, and therefore allow us to address two fundamental questions in astronomy: what was the nature of our protoplanetary disk, and how did the process of planetary accretion occur?
Fernández, Y. R. +3 more
openaire +3 more sources
ANALYSIS OF ASTEROID’S OBSERVATIONS IN OPEN PHOTOMETRIC DATABASES
Odessa Astronomical Publications, 2016 Today there are several open photometric databases containing important information for the study of the physical properties of asteroids. These databases are based on the results of various measurements of the different sets of objects.
N. Pomazan, N. Maigurova
doaj +1 more source
Interpreting the Cratering Histories of Bennu, Ryugu, and Other Spacecraft-explored Asteroids
Astronomical Journal, 2019 Asteroid crater retention ages have unknown accuracy because projectile–crater scaling laws are difficult to verify. At the same time, our knowledge of asteroid and crater size–frequency distributions has increased substantially over the past few decades.
W. Bottke +13 more
semanticscholar +1 more source
Nature, 2009 The production of terrestrial andesites in subduction zones is well established. Day et al. describe two examples of meteorites (GRA 06128 and GRA 06129) that they claim to represent "an entirely new mode of generation of andesite crust compositions" on asteroids; this suggestion has wide implications for the generation of andesitic planetary crusts in
Arculus, Richard +3 more
openaire +4 more sources
Scientific Reports, 2022 The deep sea (> 200 m) is considered as the largest and most remote biome, which characterized by low temperatures, low oxygen level, scarce food, constant darkness, and high hydrostatic pressure.
Shao’e Sun, Ning Xiao, Zhongli Sha
doaj +1 more source
Asteroids and Their Mathematical Methods
Mathematics, 2022 In this paper, the basic classification of asteroids and the history and current situation of asteroid exploration are introduced. Furthermore, some recent research progress on the orbital dynamics of asteroids, including models of the gravitational ...
Yu Jiang +4 more
doaj +1 more source
, 2015 Asteroid photometry has three major applications: providing clues about asteroid surface physical properties and compositions, facilitating photometric corrections, and helping design and plan ground-based and spacecraft observations. The most significant advances in asteroid photometry in the past decade were driven by spacecraft observations that ...
Li, Jian Yang +4 more
openaire +2 more sources
Observational Data and Orbits of the Asteroids Discovered at the Molėtai Observatory in 2008–2009
Open Astronomy, 2016 We present the statistics of the asteroids observed and discovered at the Molėtai Observatory, Lithuania, in 2008–2009 within the project for astrometric observations of the near-Earth objects (NEOs), the main belt asteroids and comets.
Černis K. +2 more
doaj +1 more source
The 3 $\mu$m Spectrum of Jupiter's Irregular Satellite Himalia [PDF]
, 2014 We present a medium resolution spectrum of Jupiter's irregular satellite Himalia covering the critical 3 $\mu$m spectral region. The spectrum shows no evidence for aqueously altered phyllosilicates, as had been suggested from the tentative detection of a
Brown, M. E., Rhoden, A. R.
core +2 more sources