Results 61 to 70 of about 37,088 (220)
Time and phase resolved optical spectra of potentially hazardous asteroid 2014 JO25 [PDF]
, 2019 The asteroid 2014 JO25, considered to be "potentially hazardous" by the Minor Planet Center, was spectroscopically followed during its close-Earth encounter on 19th and 20th of April 2017. The spectra of the asteroid were taken with the low resolution spectrograph (LISA), mounted on the 1.2-m telescope at the Mount Abu Infrared Observatory, India ...
arxiv +1 more source
Magnetic field of planets, satellites and asteroids
Вісник Астрономічної школи, 2012 Origin of magnetic field of the solar system bodies, features and structure of magnetic field of planets of terrestrial type, giant planets, Moon, galilean satellites and asteroids are considered.
A. P. Vidmachenko
doaj +1 more source
A Post‐Launch Summary of the Science of NASA's Psyche Mission
AGU AdvancesAstronomical observations indicate that asteroid (16) Psyche is a large, high‐density (likely >3,400 kg·m−3), metal‐rich (30–55 vol. %) asteroid. Psyche may be remnant core material or it could be a primordial, undifferentiated metal‐rich object.
Steven D. Dibb +15 more
doaj +1 more source
Оптимальное управление движением космического аппарата в поле притяжения астероида Эрос 433
Вестник Самарского университета: Аэрокосмическая техника, технологии и машиностроение, 2019 Рассматривается алгоритм оптимизации управляемого движения космического аппарата с двигателями малой тяги в поле притяжения астероида Эрос 433. Гравитационное поле астероида имеет сложную конфигурацию.
А. Ю. Шорников
doaj +1 more source
Asteroid Distributions in the Ecliptic [PDF]
, 2009 We present analysis of the asteroid surface density distribution of main belt asteroids (mean perihelion $\Delta \simeq 2.404$ AU) in five ecliptic latitude fields, $-17 \gtsimeq \beta(\degr) \ltsimeq +15$, derived from deep \textit{Large Binocular Telescope} (LBT) $V-$band (85% completeness limit $V = 21.3$ mag) and \textit{Spitzer Space Telescope ...
arxiv +1 more source
Applied SciencesFor the convenience of comparison with previous literature, the gravity calculations are revisited for the Asteroid 4769 Castalia, but with extensions on its surface and on intersecting planes and spheres around it, using the polyhedron and harmonic ...
Weiduo Hu, Tao Fu, Chang Liu
doaj +1 more source
Вісник Астрономічної школи, 2018 Asteroids and cometary nuclei consist of the same primary substance as the gas-dust cloud from which the solar system was formed. Now this substance is being studied in the meteorite material that fell to the Earth's surface. NASA experts suggested after
A. P. Vidmachenko, A. F. Steklov
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Eccentricity distribution in the main asteroid belt [PDF]
, 2016 The observationally complete sample of the main belt asteroids now spans more than two orders of magnitude in size and numbers more than 64,000 (excluding collisional family members). We undertook an analysis of asteroids' eccentricities and their interpretation with simple physical models.
arxiv +1 more source
The Biological Bulletin, 1975 1. Intraspecific agonistic behavior, called bouts, which involves ray interactions between individual sea stars, is reported in species from all three living orders of asteroids and described for Patiria miniata and Pycnopodia helianthoides. This behavior indicates a certain sensitivity to conspecific contact on the aboral surface, in which each ...
openaire +3 more sources
Вісник Астрономічної школи, 2013 A new method of determining the size of craters on the surfaces of atmosphereless bodies of the Solar system, called spectral-frequency method (SFM), was developed at the Crimean Astrophysical Observatory by V. V. Prokofieva-Mikhaylovska, N. A. Rublevsky
A. I. Klianchin +1 more
doaj +1 more source