Results 81 to 90 of about 41,640 (267)

On the Secular Behavior of Irregular Satellites

The Astronomical Journal, 2004
Although analytical studies on the secular motion of the irregular satellites have been published recently, these theories have not yet been satisfactorily reconciled with the results of direct numerical integrations. These discrepancies occur because in secular theories the disturbing function is averaged over orbital motions, whereas instead one ...
Cuk, Matija, Burns, Joseph A.
openaire   +2 more sources

Engineering Porous Hollow Metal‐Poly(Heptazine Imide) Spheres: An Optimized Synthetic Strategy for Controlling Surface, Morphology, and Properties

Advanced Functional Materials, EarlyView.
Hollow poly(heptazine imide) spheres are prepared through a novel approach that integrates hard templating with ionothermal synthesis. This method enables precise control over surface area, pore volume, hydrophilicity, light absorption, band position, and metal composition. These tunable properties facilitate the customized design of semiconductors for
Lingli Ni, Erik Troschke, Henrik Vorwerk, Shiva Shahbazi Avarvand, Andreas Stihl, Nadzeya Brezhneva, Marius Hermesdorf, Desirée Leistenschneider, Felix H. Schacher, Jacob Schneidewind, Martin Oschatz   +10 more
wiley   +1 more source

Metastatic oral malignant melanoma transformed from pre-existing pigmented lesions in mandibular gingiva: Report of an unusual case

Journal of Dental Sciences, 2013
The objective of this study is to report the transformation of a 10-year history of melanotic mandibular gingival lesion into primary oral melanoma (POM) in a 37-year-old Taiwanese woman. The patient declined all treatments and died of widespread disease
Shin-Yu Lu, Chin-Fan Lin, Shun-Chen Huang   +2 more
doaj   +1 more source

Asteroid 2014 OL339: yet another Earth quasi-satellite

, 2014
Our planet has one permanently bound satellite -the Moon-, a likely large number of mini-moons or transient irregular natural satellites, and three temporary natural retrograde satellites or quasi-satellites. These quasi-moons -(164207) 2004 GU9, (277810)
Marcos, C. de la Fuente, Marcos, R. de la Fuente   +1 more
core   +1 more source

Light curves and colours of the faint Uranian irregular satellites Sycorax, Prospero, Stephano, Setebos and Trinculo [PDF]

, 2007
After the work of Gladman et al. (1998), it is now assessed that many irregular satellites are orbiting around Uranus. Despite many studies have been performed in past years, very few is know for the light-curves of these objects and inconsistencies are ...
Agnor, Appenzeller, Brunini, Byl, Colombo, Connelly, Cumming, Cumming, G. Carraro, Gladman, Gladman, Grav, Grav, Grav, Heppenheimer, Heppenheimer, Horedt, Horne, Jewitt, Kaasalinen, Kavelaars, Landolt, Lomb, Luu, M. G. Parisi, M. Maris, Maris, Nesvorný, Parisi, Parisi, Pollack, Rettig, Romon, Scargle, Sheppard, Slattery, Tsui   +36 more
core   +2 more sources

The Abundant Irregular Satellites of the Giant Planets [PDF]

Highlights of Astronomy, 2005
AbstractIrregular satellites have eccentric orbits that can be highly inclined or even retrograde relative to the equatorial planes of their planets. These objects cannot have formed by circumplanetary accretion as did the regular satellites which follow un-inclined, nearly circular, pro-grade orbits.
Scott S. Sheppard, David C. Jewitt
openaire   +1 more source

Non Thermal‐Driven Photocatalytic Ammonia Decomposition at Near‐Room Temperature on a Plasmonic Nanocone Array

Advanced Functional Materials, EarlyView.
Plasmonic photocatalytic ammonia decomposition occurs at near‐room temperature on a plasmonic Au nanocone array under visible light illumination. The nanostructure efficiently harnesses plasmonic modes, leading to increased reaction rates upon plasmon decay.
Thanh‐Lam Bui, S. M. Hossein Hejazi, Jan Navrátil, Hana Kmentová, Petr Bábor, Olivier Henrotte, Luca Mascaretti, Matteo Bisetto, Stephen K. Sanders, Andrea Schirato, Michal Otyepka, Piotr Błoński, Tiziano Montini, Radek Zboril, Paolo Fornasiero, Alessandro Alabastri, Alberto Naldoni, Stepan Kment   +17 more
wiley   +1 more source

A review of real-time multi-GNSS precise orbit determination based on the filter method

Satellite Navigation, 2022
Stable and reliable high-precision satellite orbit products are the prerequisites for the positioning services with high performance. In general, the positioning accuracy depends strongly on the quality of satellite orbit and clock products, especially ...
Yidong Lou, Xiaolei Dai, Xiaopeng Gong, Chenglong Li, Yun Qing, Yang Liu, Yaquan Peng, Shengfeng Gu   +7 more
doaj   +1 more source

Irregular fixation – II. The orbits of irregular satellites

Monthly Notices of the Royal Astronomical Society
ABSTRACT Irregular satellites (ISs) are believed to have been captured during the Solar system’s dynamical history and provide clues for the Solar system’s formation and evolution. ISs occupy a large fraction of the Hill sphere of their host planet and their orbits are highly perturbed by the Sun.
openaire   +2 more sources

CCD positions for eight Jovian irregular satellites [PDF]

Astronomy & Astrophysics, 2006
The astrometric positions of eight irregular Jovian satellites are given for the oppositions of the planet from 1995 to 1999. These positions were measured on 204 CCD frames obtained at the Cassegrain focus of a 1.6 m reflector. They are compared with the theoretically calculated positions from JPL Development Ephemeris.
openaire   +1 more source