Results 11 to 20 of about 5,627 (172)

Bayesian test of the strong equivalence principle in Brans-Dicke theories with planetary ephemerides

open access: yes, 2023
International audienceContext: We are testing strong equivalence principle with planetary ephemerides in the frame of the Brans-Dicke class of scalar tensor theories.
Mariani, Vincenzo   +4 more
core   +4 more sources

Determination of Orbital Elements and Ephemerides using the Geocentric Laplace’s Method

open access: yesJournal of Astronomy and Space Sciences, 2020
This paper presents a methodology for Initial Orbit Determination (IOD) based on a modification of the Laplace’s geocentric method. The orbital elements for Near-Earth asteroids (1864) Daedalus, 2003 GW, 2019 JA8, a Hungaria-type asteroid (4690 ...
Daniela Espitia   +2 more
doaj   +1 more source

Under-Developed and Under-Utilized Eclipsing Binary Model Capabilities [PDF]

open access: yesJournal of Astronomy and Space Sciences, 2012
Existing but largely unused binary star model capabilities are examined. An easily implemented scheme is parameterization of starspot growth and decay that can stimulate work on outer convection zones and their dynamos.
R. E. Wilson
doaj   +1 more source

La propriété intellectuelle des calculs astronomiques en question

open access: yesPhilosophia Scientiæ, 2018
In 1885, the Bureau des longitudes (i.e., the French Board of longitude) had to adapt the ephemerides of the Connaissance des temps in order to answer the needs of the sailors.
Guy Boistel
doaj   +1 more source

Ephemerides of Visual Binaries of highly eccentric orbits [PDF]

open access: yes, 2013
Ephemerides of binary stars are important information for astronomical observation and research. In this paper, ephemerides of the visual binaries ADS784, ADS13665, A1529, ADS836, ADS 3434, ADS1105 and ADS 3315 have been calculated using a computational ...
Elsanhoury, Waleed   +3 more
core   +1 more source

PROGRAMS OF AES EPHEMERIDES CALCULATION

open access: yesOdessa Astronomical Publications, 2017
A program of AES ephemerides calculation is developed which permits, from the given set of elemental orbit, to calculate ephemerides for several months’ period.
S. Ja. Kolesnik, N. G. Paltsev
doaj   +1 more source

Observational Data and Orbits of the Asteroids Discovered at the Baldone Observatory in 2008–2013

open access: yesOpen Astronomy, 2015
The paper presents statistics of the asteroids observed and discovered at the Baldone Observatory, Latvia, in 2008–2013 within the project for astrometric observations of the near-Earth objects (NEOs), the main belt asteroids and comets. CCD observations
Černis K., Wlodarczyk I., Eglitis I.
doaj   +1 more source

Mobile laser scanning elevation data accuracy in closed and partially open sky area

open access: yesGeodesy and Cartography, 2021
Mobile laser scanning is being used more often in Estonia and abroad to obtain geospatial information. As the system is still new and being upgraded, different methods are being used to find out how accurately the mobile laser scanner can measure in ...
Gerly Annok, Valdar Tammin, Natalja Liba
doaj   +1 more source

Ephemerides in high medieval Europe: The textual evidence

open access: yes, 2021
A common aspect of the practice-oriented side of pre- and early modern mathematical astronomy was the computation of ephemerides, i.e., tables that displayed the daily positions of the planets in a synoptic and calendrical format.
Nothaft, Philipp
core   +1 more source

ExoClock Project. III. 450 New Exoplanet Ephemerides from Ground and Space Observations

open access: yesThe Astrophysical Journal Supplement Series, 2023
The ExoClock project has been created to increase the efficiency of the Ariel mission. It will achieve this by continuously monitoring and updating the ephemerides of Ariel candidates, in order to produce a consistent catalog of reliable and precise ...
A. Kokori   +216 more
doaj   +1 more source

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