Results 91 to 100 of about 753,460 (195)

Toward Data-Driven Satellite Orbit Prediction: A Dataset and Method Survey for Multi-Regime Satellites

IEEE Access
The rapid proliferation of artificial satellites and space debris necessitates accurate orbit prediction to ensure orbital sustainability. While machine learning has emerged as a powerful tool for this task, existing surveys lack a systematic ...
Kangjun Lee, Seungwon Jeong, Jongu Park, Youjin Shin, Simon S. Woo   +4 more
doaj   +1 more source

giove91/precise-matchings: First release

, 2017
Construction of precise matchings for the local homology of finite and affine Artin ...
Giovanni Paolini
core   +1 more source

Propagation of Space Objects

Journal of Aerospace Technology and Management, 2015
Actual, important problems of space dynamics are related to the protection of the Earth and its close space environment. This includes the study of disposal strategies for artificial satellites, the real-time propagation of space catalogues of thousands
Martin Lara, Rodolpho Vilhena de Moraes, Diogo Merguizo Sanchez, Antonio Fernando Bertachini de Almeida Prado   +3 more
doaj  

Tomography of thermospheric density from Starlink Ephemeris: initial report

Earth, Planets and Space
This report presents the first demonstration of successful tomographic analysis of thermospheric density using orbital data from a massive Starlink satellite constellation.
Mamoru Yamamoto
doaj   +1 more source

Interactions between astronomical ephemerides and society

, 2009
Ephemerides are regularly made by astronomers for their own uses. However, the general public is also interested, as well as official organisms, because of the interactions of ephemerides with society. Astronomers in charge of the making of calendars and
Arlot, Jean-Eudes, Jean-Eudes Arlot
core   +1 more source

Determination of Jupiter’s Pole Orientation from Juno Radio Science Data

Aerospace
The extreme accuracy of Juno radio science data allows us to perform very precise orbit determination experiments. While previous works focused on the estimation of the gravitational field of Jupiter, in this article, we aim to accurately determine the ...
Giacomo Lari, Marco Zannoni, Daniele Durante, Ryan S. Park, Giacomo Tommei   +4 more
doaj   +1 more source

Cometary ephemerides - needs and concerns [PDF]

, 1981
With the use of narrow field-of-view instrumentation on faint comets, the accuracy requirements upon computed ephemerides are increasing. It is not uncommon for instruments with a one arc minute field-of-view to be tracking a faint comet that is not ...
Yeomans, D. K.
core  

CALCULATION OF EPHEMERIDES FROM INITIAL VALUES [PDF]

, 1962
Calculation of ephemerides of planets and comets from initial ...
Stumpff, K.
core  

Probing the Possible Causes of the Transit Timing Variation for TrES-2b in the TESS Era

The Astronomical Journal
Nowadays, transit timing variations (TTVs) are proving to be a very valuable tool in exoplanetary science to detect exoplanets by observing variations in transit times. To study the TTV of the hot Jupiter TrES-2b, we have combined 64 high-quality transit
Shraddha Biswas, D. Bisht, Ing-Guey Jiang, Devesh P. Sariya, Kaviya Parthasarathy   +4 more
doaj   +1 more source

Studying the Properties of Spacetime with an Improved Dynamical Model of the Inner Solar System

Universe
Physical properties of the Sun (orientation of rotation axis, oblateness coefficient J2⊙, and change rate of the gravitational parameter μ˙⊙) are determined using a dynamical model describing the motion of the Sun, planets, the Moon, asteroids, and Trans-
Dmitry Pavlov, Ivan Dolgakov
doaj   +1 more source